core, ethdb, metrics, p2p: expose various counter metrics for grafana

core/blockchain.go

@@ -46,6 +46,10 @@ import (
 )
 
 var (
+	headBlockGauge     = metrics.NewRegisteredGauge("chain/head/block", nil)
+	headHeaderGauge    = metrics.NewRegisteredGauge("chain/head/header", nil)
+	headFastBlockGauge = metrics.NewRegisteredGauge("chain/head/receipt", nil)
+
 	accountReadTimer   = metrics.NewRegisteredTimer("chain/account/reads", nil)
 	accountHashTimer   = metrics.NewRegisteredTimer("chain/account/hashes", nil)
 	accountUpdateTimer = metrics.NewRegisteredTimer("chain/account/updates", nil)
@@ -332,6 +336,7 @@ func (bc *BlockChain) loadLastState() error {
 	}
 	// Everything seems to be fine, set as the head block
 	bc.currentBlock.Store(currentBlock)
+	headBlockGauge.Update(int64(currentBlock.NumberU64()))
 
 	// Restore the last known head header
 	currentHeader := currentBlock.Header()
@@ -344,12 +349,14 @@ func (bc *BlockChain) loadLastState() error {
 
 	// Restore the last known head fast block
 	bc.currentFastBlock.Store(currentBlock)
+	headFastBlockGauge.Update(int64(currentBlock.NumberU64()))
+
 	if head := rawdb.ReadHeadFastBlockHash(bc.db); head != (common.Hash{}) {
 		if block := bc.GetBlockByHash(head); block != nil {
 			bc.currentFastBlock.Store(block)
+			headFastBlockGauge.Update(int64(block.NumberU64()))
 		}
 	}
-
 	// Issue a status log for the user
 	currentFastBlock := bc.CurrentFastBlock()
 
@@ -388,6 +395,7 @@ func (bc *BlockChain) SetHead(head uint64) error {
 			}
 			rawdb.WriteHeadBlockHash(db, newHeadBlock.Hash())
 			bc.currentBlock.Store(newHeadBlock)
+			headBlockGauge.Update(int64(newHeadBlock.NumberU64()))
 		}
 
 		// Rewind the fast block in a simpleton way to the target head
@@ -399,6 +407,7 @@ func (bc *BlockChain) SetHead(head uint64) error {
 			}
 			rawdb.WriteHeadFastBlockHash(db, newHeadFastBlock.Hash())
 			bc.currentFastBlock.Store(newHeadFastBlock)
+			headFastBlockGauge.Update(int64(newHeadFastBlock.NumberU64()))
 		}
 	}
 
@@ -450,6 +459,7 @@ func (bc *BlockChain) FastSyncCommitHead(hash common.Hash) error {
 	// If all checks out, manually set the head block
 	bc.chainmu.Lock()
 	bc.currentBlock.Store(block)
+	headBlockGauge.Update(int64(block.NumberU64()))
 	bc.chainmu.Unlock()
 
 	log.Info("Committed new head block", "number", block.Number(), "hash", hash)
@@ -522,9 +532,12 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) error {
 	bc.genesisBlock = genesis
 	bc.insert(bc.genesisBlock)
 	bc.currentBlock.Store(bc.genesisBlock)
+	headBlockGauge.Update(int64(bc.genesisBlock.NumberU64()))
+
 	bc.hc.SetGenesis(bc.genesisBlock.Header())
 	bc.hc.SetCurrentHeader(bc.genesisBlock.Header())
 	bc.currentFastBlock.Store(bc.genesisBlock)
+	headFastBlockGauge.Update(int64(bc.genesisBlock.NumberU64()))
 
 	return nil
 }
@@ -598,6 +611,7 @@ func (bc *BlockChain) insert(block *types.Block) {
 	rawdb.WriteHeadBlockHash(bc.db, block.Hash())
 
 	bc.currentBlock.Store(block)
+	headBlockGauge.Update(int64(block.NumberU64()))
 
 	// If the block is better than our head or is on a different chain, force update heads
 	if updateHeads {
@@ -605,6 +619,7 @@ func (bc *BlockChain) insert(block *types.Block) {
 		rawdb.WriteHeadFastBlockHash(bc.db, block.Hash())
 
 		bc.currentFastBlock.Store(block)
+		headFastBlockGauge.Update(int64(block.NumberU64()))
 	}
 }
 
@@ -862,11 +877,13 @@ func (bc *BlockChain) Rollback(chain []common.Hash) {
 			newFastBlock := bc.GetBlock(currentFastBlock.ParentHash(), currentFastBlock.NumberU64()-1)
 			rawdb.WriteHeadFastBlockHash(bc.db, newFastBlock.Hash())
 			bc.currentFastBlock.Store(newFastBlock)
+			headFastBlockGauge.Update(int64(newFastBlock.NumberU64()))
 		}
 		if currentBlock := bc.CurrentBlock(); currentBlock.Hash() == hash {
 			newBlock := bc.GetBlock(currentBlock.ParentHash(), currentBlock.NumberU64()-1)
 			rawdb.WriteHeadBlockHash(bc.db, newBlock.Hash())
 			bc.currentBlock.Store(newBlock)
+			headBlockGauge.Update(int64(newBlock.NumberU64()))
 		}
 	}
 	// Truncate ancient data which exceeds the current header.
@@ -952,6 +969,7 @@ func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain [
 			if bc.GetTd(currentFastBlock.Hash(), currentFastBlock.NumberU64()).Cmp(td) < 0 {
 				rawdb.WriteHeadFastBlockHash(bc.db, head.Hash())
 				bc.currentFastBlock.Store(head)
+				headFastBlockGauge.Update(int64(head.NumberU64()))
 				isCanonical = true
 			}
 		}

core/headerchain.go

@@ -104,6 +104,7 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine c
 		}
 	}
 	hc.currentHeaderHash = hc.CurrentHeader().Hash()
+	headHeaderGauge.Update(hc.CurrentHeader().Number.Int64())
 
 	return hc, nil
 }
@@ -185,12 +186,12 @@ func (hc *HeaderChain) WriteHeader(header *types.Header) (status WriteStatus, er
 
 		hc.currentHeaderHash = hash
 		hc.currentHeader.Store(types.CopyHeader(header))
+		headHeaderGauge.Update(header.Number.Int64())
 
 		status = CanonStatTy
 	} else {
 		status = SideStatTy
 	}
-
 	hc.headerCache.Add(hash, header)
 	hc.numberCache.Add(hash, number)
 
@@ -456,6 +457,7 @@ func (hc *HeaderChain) SetCurrentHeader(head *types.Header) {
 
 	hc.currentHeader.Store(head)
 	hc.currentHeaderHash = head.Hash()
+	headHeaderGauge.Update(head.Number.Int64())
 }
 
 type (
@@ -508,6 +510,7 @@ func (hc *HeaderChain) SetHead(head uint64, updateFn UpdateHeadBlocksCallback, d
 
 		hc.currentHeader.Store(parent)
 		hc.currentHeaderHash = parentHash
+		headHeaderGauge.Update(parent.Number.Int64())
 	}
 	batch.Write()
 

core/rawdb/freezer.go

@@ -80,8 +80,9 @@ type freezer struct {
 func newFreezer(datadir string, namespace string) (*freezer, error) {
 	// Create the initial freezer object
 	var (
-		readMeter  = metrics.NewRegisteredMeter(namespace+"ancient/read", nil)
+		readMeter   = metrics.NewRegisteredMeter(namespace+"ancient/read", nil)
-		writeMeter = metrics.NewRegisteredMeter(namespace+"ancient/write", nil)
+		writeMeter  = metrics.NewRegisteredMeter(namespace+"ancient/write", nil)
+		sizeCounter = metrics.NewRegisteredCounter(namespace+"ancient/size", nil)
 	)
 	// Ensure the datadir is not a symbolic link if it exists.
 	if info, err := os.Lstat(datadir); !os.IsNotExist(err) {
@@ -102,7 +103,7 @@ func newFreezer(datadir string, namespace string) (*freezer, error) {
 		instanceLock: lock,
 	}
 	for name, disableSnappy := range freezerNoSnappy {
-		table, err := newTable(datadir, name, readMeter, writeMeter, disableSnappy)
+		table, err := newTable(datadir, name, readMeter, writeMeter, sizeCounter, disableSnappy)
 		if err != nil {
 			for _, table := range freezer.tables {
 				table.Close()

core/rawdb/freezer_table.go

@@ -94,17 +94,18 @@ type freezerTable struct {
 	// to count how many historic items have gone missing.
 	itemOffset uint32 // Offset (number of discarded items)
 
-	headBytes  uint32        // Number of bytes written to the head file
+	headBytes   uint32          // Number of bytes written to the head file
-	readMeter  metrics.Meter // Meter for measuring the effective amount of data read
+	readMeter   metrics.Meter   // Meter for measuring the effective amount of data read
-	writeMeter metrics.Meter // Meter for measuring the effective amount of data written
+	writeMeter  metrics.Meter   // Meter for measuring the effective amount of data written
+	sizeCounter metrics.Counter // Counter for tracking the combined size of all freezer tables
 
 	logger log.Logger   // Logger with database path and table name ambedded
 	lock   sync.RWMutex // Mutex protecting the data file descriptors
 }
 
 // newTable opens a freezer table with default settings - 2G files
-func newTable(path string, name string, readMeter metrics.Meter, writeMeter metrics.Meter, disableSnappy bool) (*freezerTable, error) {
+func newTable(path string, name string, readMeter metrics.Meter, writeMeter metrics.Meter, sizeCounter metrics.Counter, disableSnappy bool) (*freezerTable, error) {
-	return newCustomTable(path, name, readMeter, writeMeter, 2*1000*1000*1000, disableSnappy)
+	return newCustomTable(path, name, readMeter, writeMeter, sizeCounter, 2*1000*1000*1000, disableSnappy)
 }
 
 // openFreezerFileForAppend opens a freezer table file and seeks to the end
@@ -148,7 +149,7 @@ func truncateFreezerFile(file *os.File, size int64) error {
 // newCustomTable opens a freezer table, creating the data and index files if they are
 // non existent. Both files are truncated to the shortest common length to ensure
 // they don't go out of sync.
-func newCustomTable(path string, name string, readMeter metrics.Meter, writeMeter metrics.Meter, maxFilesize uint32, noCompression bool) (*freezerTable, error) {
+func newCustomTable(path string, name string, readMeter metrics.Meter, writeMeter metrics.Meter, sizeCounter metrics.Counter, maxFilesize uint32, noCompression bool) (*freezerTable, error) {
 	// Ensure the containing directory exists and open the indexEntry file
 	if err := os.MkdirAll(path, 0755); err != nil {
 		return nil, err
@@ -171,6 +172,7 @@ func newCustomTable(path string, name string, readMeter metrics.Meter, writeMete
 		files:         make(map[uint32]*os.File),
 		readMeter:     readMeter,
 		writeMeter:    writeMeter,
+		sizeCounter:   sizeCounter,
 		name:          name,
 		path:          path,
 		logger:        log.New("database", path, "table", name),
@@ -181,6 +183,14 @@ func newCustomTable(path string, name string, readMeter metrics.Meter, writeMete
 		tab.Close()
 		return nil, err
 	}
+	// Initialize the starting size counter
+	size, err := tab.sizeNolock()
+	if err != nil {
+		tab.Close()
+		return nil, err
+	}
+	tab.sizeCounter.Inc(int64(size))
+
 	return tab, nil
 }
 
@@ -321,6 +331,11 @@ func (t *freezerTable) truncate(items uint64) error {
 	if atomic.LoadUint64(&t.items) <= items {
 		return nil
 	}
+	// We need to truncate, save the old size for metrics tracking
+	oldSize, err := t.sizeNolock()
+	if err != nil {
+		return err
+	}
 	// Something's out of sync, truncate the table's offset index
 	t.logger.Warn("Truncating freezer table", "items", t.items, "limit", items)
 	if err := truncateFreezerFile(t.index, int64(items+1)*indexEntrySize); err != nil {
@@ -355,6 +370,14 @@ func (t *freezerTable) truncate(items uint64) error {
 	// All data files truncated, set internal counters and return
 	atomic.StoreUint64(&t.items, items)
 	atomic.StoreUint32(&t.headBytes, expected.offset)
+
+	// Retrieve the new size and update the total size counter
+	newSize, err := t.sizeNolock()
+	if err != nil {
+		return err
+	}
+	t.sizeCounter.Dec(int64(oldSize - newSize))
+
 	return nil
 }
 
@@ -483,7 +506,10 @@ func (t *freezerTable) Append(item uint64, blob []byte) error {
 	}
 	// Write indexEntry
 	t.index.Write(idx.marshallBinary())
+
 	t.writeMeter.Mark(int64(bLen + indexEntrySize))
+	t.sizeCounter.Inc(int64(bLen + indexEntrySize))
+
 	atomic.AddUint64(&t.items, 1)
 	return nil
 }
@@ -562,6 +588,12 @@ func (t *freezerTable) size() (uint64, error) {
 	t.lock.RLock()
 	defer t.lock.RUnlock()
 
+	return t.sizeNolock()
+}
+
+// sizeNolock returns the total data size in the freezer table without obtaining
+// the mutex first.
+func (t *freezerTable) sizeNolock() (uint64, error) {
 	stat, err := t.index.Stat()
 	if err != nil {
 		return 0, err

core/rawdb/freezer_table_test.go

@@ -56,7 +56,7 @@ func TestFreezerBasics(t *testing.T) {
 	// set cutoff at 50 bytes
 	f, err := newCustomTable(os.TempDir(),
 		fmt.Sprintf("unittest-%d", rand.Uint64()),
-		metrics.NewMeter(), metrics.NewMeter(), 50, true)
+		metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter(), 50, true)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -98,12 +98,12 @@ func TestFreezerBasicsClosing(t *testing.T) {
 	t.Parallel()
 	// set cutoff at 50 bytes
 	var (
-		fname  = fmt.Sprintf("basics-close-%d", rand.Uint64())
+		fname      = fmt.Sprintf("basics-close-%d", rand.Uint64())
-		m1, m2 = metrics.NewMeter(), metrics.NewMeter()
+		rm, wm, sc = metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
-		f      *freezerTable
+		f          *freezerTable
-		err    error
+		err        error
 	)
-	f, err = newCustomTable(os.TempDir(), fname, m1, m2, 50, true)
+	f, err = newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -112,7 +112,7 @@ func TestFreezerBasicsClosing(t *testing.T) {
 		data := getChunk(15, x)
 		f.Append(uint64(x), data)
 		f.Close()
-		f, err = newCustomTable(os.TempDir(), fname, m1, m2, 50, true)
+		f, err = newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 	}
 	defer f.Close()
 
@@ -126,7 +126,7 @@ func TestFreezerBasicsClosing(t *testing.T) {
 			t.Fatalf("test %d, got \n%x != \n%x", y, got, exp)
 		}
 		f.Close()
-		f, err = newCustomTable(os.TempDir(), fname, m1, m2, 50, true)
+		f, err = newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -136,11 +136,11 @@ func TestFreezerBasicsClosing(t *testing.T) {
 // TestFreezerRepairDanglingHead tests that we can recover if index entries are removed
 func TestFreezerRepairDanglingHead(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("dangling_headtest-%d", rand.Uint64())
 
 	{ // Fill table
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -169,7 +169,7 @@ func TestFreezerRepairDanglingHead(t *testing.T) {
 	idxFile.Close()
 	// Now open it again
 	{
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		// The last item should be missing
 		if _, err = f.Retrieve(0xff); err == nil {
 			t.Errorf("Expected error for missing index entry")
@@ -184,11 +184,11 @@ func TestFreezerRepairDanglingHead(t *testing.T) {
 // TestFreezerRepairDanglingHeadLarge tests that we can recover if very many index entries are removed
 func TestFreezerRepairDanglingHeadLarge(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("dangling_headtest-%d", rand.Uint64())
 
 	{ // Fill a table and close it
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -216,7 +216,7 @@ func TestFreezerRepairDanglingHeadLarge(t *testing.T) {
 	idxFile.Close()
 	// Now open it again
 	{
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		// The first item should be there
 		if _, err = f.Retrieve(0); err != nil {
 			t.Fatal(err)
@@ -234,7 +234,7 @@ func TestFreezerRepairDanglingHeadLarge(t *testing.T) {
 	}
 	// And if we open it, we should now be able to read all of them (new values)
 	{
-		f, _ := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, _ := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		for y := 1; y < 255; y++ {
 			exp := getChunk(15, ^y)
 			got, err := f.Retrieve(uint64(y))
@@ -251,11 +251,11 @@ func TestFreezerRepairDanglingHeadLarge(t *testing.T) {
 // TestSnappyDetection tests that we fail to open a snappy database and vice versa
 func TestSnappyDetection(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("snappytest-%d", rand.Uint64())
 	// Open with snappy
 	{
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -268,7 +268,7 @@ func TestSnappyDetection(t *testing.T) {
 	}
 	// Open without snappy
 	{
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, false)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, false)
 		if _, err = f.Retrieve(0); err == nil {
 			f.Close()
 			t.Fatalf("expected empty table")
@@ -277,7 +277,7 @@ func TestSnappyDetection(t *testing.T) {
 
 	// Open with snappy
 	{
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		// There should be 255 items
 		if _, err = f.Retrieve(0xfe); err != nil {
 			f.Close()
@@ -302,11 +302,11 @@ func assertFileSize(f string, size int64) error {
 // the index is repaired
 func TestFreezerRepairDanglingIndex(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("dangling_indextest-%d", rand.Uint64())
 
 	{ // Fill a table and close it
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -342,7 +342,7 @@ func TestFreezerRepairDanglingIndex(t *testing.T) {
 	// 45, 45, 15
 	// with 3+3+1 items
 	{
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -359,11 +359,11 @@ func TestFreezerRepairDanglingIndex(t *testing.T) {
 func TestFreezerTruncate(t *testing.T) {
 
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("truncation-%d", rand.Uint64())
 
 	{ // Fill table
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -380,7 +380,7 @@ func TestFreezerTruncate(t *testing.T) {
 	}
 	// Reopen, truncate
 	{
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -402,10 +402,10 @@ func TestFreezerTruncate(t *testing.T) {
 // That will rewind the index, and _should_ truncate the head file
 func TestFreezerRepairFirstFile(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("truncationfirst-%d", rand.Uint64())
 	{ // Fill table
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -433,7 +433,7 @@ func TestFreezerRepairFirstFile(t *testing.T) {
 	}
 	// Reopen
 	{
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -458,10 +458,10 @@ func TestFreezerRepairFirstFile(t *testing.T) {
 // - check that we did not keep the rdonly file descriptors
 func TestFreezerReadAndTruncate(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("read_truncate-%d", rand.Uint64())
 	{ // Fill table
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -478,7 +478,7 @@ func TestFreezerReadAndTruncate(t *testing.T) {
 	}
 	// Reopen and read all files
 	{
-		f, err := newCustomTable(os.TempDir(), fname, wm, rm, 50, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 50, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -504,10 +504,10 @@ func TestFreezerReadAndTruncate(t *testing.T) {
 
 func TestOffset(t *testing.T) {
 	t.Parallel()
-	wm, rm := metrics.NewMeter(), metrics.NewMeter()
+	rm, wm, sc := metrics.NewMeter(), metrics.NewMeter(), metrics.NewCounter()
 	fname := fmt.Sprintf("offset-%d", rand.Uint64())
 	{ // Fill table
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 40, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 40, true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -563,7 +563,7 @@ func TestOffset(t *testing.T) {
 	}
 	// Now open again
 	{
-		f, err := newCustomTable(os.TempDir(), fname, rm, wm, 40, true)
+		f, err := newCustomTable(os.TempDir(), fname, rm, wm, sc, 40, true)
 		if err != nil {
 			t.Fatal(err)
 		}

core/tx_list.go

@@ -418,9 +418,9 @@ func (l *txPricedList) Put(tx *types.Transaction) {
 // Removed notifies the prices transaction list that an old transaction dropped
 // from the pool. The list will just keep a counter of stale objects and update
 // the heap if a large enough ratio of transactions go stale.
-func (l *txPricedList) Removed() {
+func (l *txPricedList) Removed(count int) {
 	// Bump the stale counter, but exit if still too low (< 25%)
-	l.stales++
+	l.stales += count
 	if l.stales <= len(*l.items)/4 {
 		return
 	}

core/tx_pool.go

@@ -85,20 +85,25 @@ var (
 
 var (
 	// Metrics for the pending pool
-	pendingDiscardCounter   = metrics.NewRegisteredCounter("txpool/pending/discard", nil)
+	pendingDiscardMeter   = metrics.NewRegisteredMeter("txpool/pending/discard", nil)
-	pendingReplaceCounter   = metrics.NewRegisteredCounter("txpool/pending/replace", nil)
+	pendingReplaceMeter   = metrics.NewRegisteredMeter("txpool/pending/replace", nil)
-	pendingRateLimitCounter = metrics.NewRegisteredCounter("txpool/pending/ratelimit", nil) // Dropped due to rate limiting
+	pendingRateLimitMeter = metrics.NewRegisteredMeter("txpool/pending/ratelimit", nil) // Dropped due to rate limiting
-	pendingNofundsCounter   = metrics.NewRegisteredCounter("txpool/pending/nofunds", nil)   // Dropped due to out-of-funds
+	pendingNofundsMeter   = metrics.NewRegisteredMeter("txpool/pending/nofunds", nil)   // Dropped due to out-of-funds
 
 	// Metrics for the queued pool
-	queuedDiscardCounter   = metrics.NewRegisteredCounter("txpool/queued/discard", nil)
+	queuedDiscardMeter   = metrics.NewRegisteredMeter("txpool/queued/discard", nil)
-	queuedReplaceCounter   = metrics.NewRegisteredCounter("txpool/queued/replace", nil)
+	queuedReplaceMeter   = metrics.NewRegisteredMeter("txpool/queued/replace", nil)
-	queuedRateLimitCounter = metrics.NewRegisteredCounter("txpool/queued/ratelimit", nil) // Dropped due to rate limiting
+	queuedRateLimitMeter = metrics.NewRegisteredMeter("txpool/queued/ratelimit", nil) // Dropped due to rate limiting
-	queuedNofundsCounter   = metrics.NewRegisteredCounter("txpool/queued/nofunds", nil)   // Dropped due to out-of-funds
+	queuedNofundsMeter   = metrics.NewRegisteredMeter("txpool/queued/nofunds", nil)   // Dropped due to out-of-funds
 
 	// General tx metrics
-	invalidTxCounter     = metrics.NewRegisteredCounter("txpool/invalid", nil)
+	validMeter         = metrics.NewRegisteredMeter("txpool/valid", nil)
-	underpricedTxCounter = metrics.NewRegisteredCounter("txpool/underpriced", nil)
+	invalidTxMeter     = metrics.NewRegisteredMeter("txpool/invalid", nil)
+	underpricedTxMeter = metrics.NewRegisteredMeter("txpool/underpriced", nil)
+
+	pendingCounter = metrics.NewRegisteredCounter("txpool/pending", nil)
+	queuedCounter  = metrics.NewRegisteredCounter("txpool/queued", nil)
+	localCounter   = metrics.NewRegisteredCounter("txpool/local", nil)
 )
 
 // TxStatus is the current status of a transaction as seen by the pool.
@@ -661,7 +666,7 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (bool, error) {
 	// If the transaction fails basic validation, discard it
 	if err := pool.validateTx(tx, local); err != nil {
 		log.Trace("Discarding invalid transaction", "hash", hash, "err", err)
-		invalidTxCounter.Inc(1)
+		invalidTxMeter.Mark(1)
 		return false, err
 	}
 	// If the transaction pool is full, discard underpriced transactions
@@ -669,14 +674,14 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (bool, error) {
 		// If the new transaction is underpriced, don't accept it
 		if !local && pool.priced.Underpriced(tx, pool.locals) {
 			log.Trace("Discarding underpriced transaction", "hash", hash, "price", tx.GasPrice())
-			underpricedTxCounter.Inc(1)
+			underpricedTxMeter.Mark(1)
 			return false, ErrUnderpriced
 		}
 		// New transaction is better than our worse ones, make room for it
 		drop := pool.priced.Discard(pool.all.Count()-int(pool.config.GlobalSlots+pool.config.GlobalQueue-1), pool.locals)
 		for _, tx := range drop {
 			log.Trace("Discarding freshly underpriced transaction", "hash", tx.Hash(), "price", tx.GasPrice())
-			underpricedTxCounter.Inc(1)
+			underpricedTxMeter.Mark(1)
 			pool.removeTx(tx.Hash(), false)
 		}
 	}
@@ -686,14 +691,14 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (bool, error) {
 		// Nonce already pending, check if required price bump is met
 		inserted, old := list.Add(tx, pool.config.PriceBump)
 		if !inserted {
-			pendingDiscardCounter.Inc(1)
+			pendingDiscardMeter.Mark(1)
 			return false, ErrReplaceUnderpriced
 		}
 		// New transaction is better, replace old one
 		if old != nil {
 			pool.all.Remove(old.Hash())
-			pool.priced.Removed()
+			pool.priced.Removed(1)
-			pendingReplaceCounter.Inc(1)
+			pendingReplaceMeter.Mark(1)
 		}
 		pool.all.Add(tx)
 		pool.priced.Put(tx)
@@ -718,6 +723,9 @@ func (pool *TxPool) add(tx *types.Transaction, local bool) (bool, error) {
 			pool.locals.add(from)
 		}
 	}
+	if local || pool.locals.contains(from) {
+		localCounter.Inc(1)
+	}
 	pool.journalTx(from, tx)
 
 	log.Trace("Pooled new future transaction", "hash", hash, "from", from, "to", tx.To())
@@ -736,14 +744,17 @@ func (pool *TxPool) enqueueTx(hash common.Hash, tx *types.Transaction) (bool, er
 	inserted, old := pool.queue[from].Add(tx, pool.config.PriceBump)
 	if !inserted {
 		// An older transaction was better, discard this
-		queuedDiscardCounter.Inc(1)
+		queuedDiscardMeter.Mark(1)
 		return false, ErrReplaceUnderpriced
 	}
 	// Discard any previous transaction and mark this
 	if old != nil {
 		pool.all.Remove(old.Hash())
-		pool.priced.Removed()
+		pool.priced.Removed(1)
-		queuedReplaceCounter.Inc(1)
+		queuedReplaceMeter.Mark(1)
+	} else {
+		// Nothing was replaced, bump the queued counter
+		queuedCounter.Inc(1)
 	}
 	if pool.all.Get(hash) == nil {
 		pool.all.Add(tx)
@@ -779,17 +790,20 @@ func (pool *TxPool) promoteTx(addr common.Address, hash common.Hash, tx *types.T
 	if !inserted {
 		// An older transaction was better, discard this
 		pool.all.Remove(hash)
-		pool.priced.Removed()
+		pool.priced.Removed(1)
 
-		pendingDiscardCounter.Inc(1)
+		pendingDiscardMeter.Mark(1)
 		return false
 	}
 	// Otherwise discard any previous transaction and mark this
 	if old != nil {
 		pool.all.Remove(old.Hash())
-		pool.priced.Removed()
+		pool.priced.Removed(1)
 
-		pendingReplaceCounter.Inc(1)
+		pendingReplaceMeter.Mark(1)
+	} else {
+		// Nothing was replaced, bump the pending counter
+		pendingCounter.Inc(1)
 	}
 	// Failsafe to work around direct pending inserts (tests)
 	if pool.all.Get(hash) == nil {
@@ -844,6 +858,8 @@ func (pool *TxPool) addTx(tx *types.Transaction, local bool) error {
 	if err != nil {
 		return err
 	}
+	validMeter.Mark(1)
+
 	// If we added a new transaction, run promotion checks and return
 	if !replace {
 		from, _ := types.Sender(pool.signer, tx) // already validated
@@ -878,6 +894,8 @@ func (pool *TxPool) addTxsLocked(txs []*types.Transaction, local bool) []error {
 			dirty[from] = struct{}{}
 		}
 	}
+	validMeter.Mark(int64(len(dirty)))
+
 	// Only reprocess the internal state if something was actually added
 	if len(dirty) > 0 {
 		addrs := make([]common.Address, 0, len(dirty))
@@ -928,7 +946,10 @@ func (pool *TxPool) removeTx(hash common.Hash, outofbound bool) {
 	// Remove it from the list of known transactions
 	pool.all.Remove(hash)
 	if outofbound {
-		pool.priced.Removed()
+		pool.priced.Removed(1)
+	}
+	if pool.locals.contains(addr) {
+		localCounter.Dec(1)
 	}
 	// Remove the transaction from the pending lists and reset the account nonce
 	if pending := pool.pending[addr]; pending != nil {
@@ -946,12 +967,17 @@ func (pool *TxPool) removeTx(hash common.Hash, outofbound bool) {
 			if nonce := tx.Nonce(); pool.pendingState.GetNonce(addr) > nonce {
 				pool.pendingState.SetNonce(addr, nonce)
 			}
+			// Reduce the pending counter
+			pendingCounter.Dec(int64(1 + len(invalids)))
 			return
 		}
 	}
 	// Transaction is in the future queue
 	if future := pool.queue[addr]; future != nil {
-		future.Remove(tx)
+		if removed, _ := future.Remove(tx); removed {
+			// Reduce the queued counter
+			queuedCounter.Dec(1)
+		}
 		if future.Empty() {
 			delete(pool.queue, addr)
 		}
@@ -979,38 +1005,48 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 			continue // Just in case someone calls with a non existing account
 		}
 		// Drop all transactions that are deemed too old (low nonce)
-		for _, tx := range list.Forward(pool.currentState.GetNonce(addr)) {
+		forwards := list.Forward(pool.currentState.GetNonce(addr))
+		for _, tx := range forwards {
 			hash := tx.Hash()
-			log.Trace("Removed old queued transaction", "hash", hash)
 			pool.all.Remove(hash)
-			pool.priced.Removed()
+			log.Trace("Removed old queued transaction", "hash", hash)
 		}
 		// Drop all transactions that are too costly (low balance or out of gas)
 		drops, _ := list.Filter(pool.currentState.GetBalance(addr), pool.currentMaxGas)
 		for _, tx := range drops {
 			hash := tx.Hash()
-			log.Trace("Removed unpayable queued transaction", "hash", hash)
 			pool.all.Remove(hash)
-			pool.priced.Removed()
+			log.Trace("Removed unpayable queued transaction", "hash", hash)
-			queuedNofundsCounter.Inc(1)
 		}
+		queuedNofundsMeter.Mark(int64(len(drops)))
+
 		// Gather all executable transactions and promote them
-		for _, tx := range list.Ready(pool.pendingState.GetNonce(addr)) {
+		readies := list.Ready(pool.pendingState.GetNonce(addr))
+		for _, tx := range readies {
 			hash := tx.Hash()
 			if pool.promoteTx(addr, hash, tx) {
 				log.Trace("Promoting queued transaction", "hash", hash)
 				promoted = append(promoted, tx)
 			}
 		}
+		queuedCounter.Dec(int64(len(readies)))
+
 		// Drop all transactions over the allowed limit
+		var caps types.Transactions
 		if !pool.locals.contains(addr) {
-			for _, tx := range list.Cap(int(pool.config.AccountQueue)) {
+			caps = list.Cap(int(pool.config.AccountQueue))
+			for _, tx := range caps {
 				hash := tx.Hash()
 				pool.all.Remove(hash)
-				pool.priced.Removed()
-				queuedRateLimitCounter.Inc(1)
 				log.Trace("Removed cap-exceeding queued transaction", "hash", hash)
 			}
+			queuedRateLimitMeter.Mark(int64(len(caps)))
+		}
+		// Mark all the items dropped as removed
+		pool.priced.Removed(len(forwards) + len(drops) + len(caps))
+		queuedCounter.Dec(int64(len(forwards) + len(drops) + len(caps)))
+		if pool.locals.contains(addr) {
+			localCounter.Dec(int64(len(forwards) + len(drops) + len(caps)))
 		}
 		// Delete the entire queue entry if it became empty.
 		if list.Empty() {
@@ -1052,11 +1088,12 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 				for pending > pool.config.GlobalSlots && pool.pending[offenders[len(offenders)-2]].Len() > threshold {
 					for i := 0; i < len(offenders)-1; i++ {
 						list := pool.pending[offenders[i]]
-						for _, tx := range list.Cap(list.Len() - 1) {
+
+						caps := list.Cap(list.Len() - 1)
+						for _, tx := range caps {
 							// Drop the transaction from the global pools too
 							hash := tx.Hash()
 							pool.all.Remove(hash)
-							pool.priced.Removed()
 
 							// Update the account nonce to the dropped transaction
 							if nonce := tx.Nonce(); pool.pendingState.GetNonce(offenders[i]) > nonce {
@@ -1064,6 +1101,11 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 							}
 							log.Trace("Removed fairness-exceeding pending transaction", "hash", hash)
 						}
+						pool.priced.Removed(len(caps))
+						pendingCounter.Dec(int64(len(caps)))
+						if pool.locals.contains(offenders[i]) {
+							localCounter.Dec(int64(len(caps)))
+						}
 						pending--
 					}
 				}
@@ -1074,11 +1116,12 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 			for pending > pool.config.GlobalSlots && uint64(pool.pending[offenders[len(offenders)-1]].Len()) > pool.config.AccountSlots {
 				for _, addr := range offenders {
 					list := pool.pending[addr]
-					for _, tx := range list.Cap(list.Len() - 1) {
+
+					caps := list.Cap(list.Len() - 1)
+					for _, tx := range caps {
 						// Drop the transaction from the global pools too
 						hash := tx.Hash()
 						pool.all.Remove(hash)
-						pool.priced.Removed()
 
 						// Update the account nonce to the dropped transaction
 						if nonce := tx.Nonce(); pool.pendingState.GetNonce(addr) > nonce {
@@ -1086,11 +1129,16 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 						}
 						log.Trace("Removed fairness-exceeding pending transaction", "hash", hash)
 					}
+					pool.priced.Removed(len(caps))
+					pendingCounter.Dec(int64(len(caps)))
+					if pool.locals.contains(addr) {
+						localCounter.Dec(int64(len(caps)))
+					}
 					pending--
 				}
 			}
 		}
-		pendingRateLimitCounter.Inc(int64(pendingBeforeCap - pending))
+		pendingRateLimitMeter.Mark(int64(pendingBeforeCap - pending))
 	}
 	// If we've queued more transactions than the hard limit, drop oldest ones
 	queued := uint64(0)
@@ -1120,7 +1168,7 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 					pool.removeTx(tx.Hash(), true)
 				}
 				drop -= size
-				queuedRateLimitCounter.Inc(int64(size))
+				queuedRateLimitMeter.Mark(int64(size))
 				continue
 			}
 			// Otherwise drop only last few transactions
@@ -1128,7 +1176,7 @@ func (pool *TxPool) promoteExecutables(accounts []common.Address) {
 			for i := len(txs) - 1; i >= 0 && drop > 0; i-- {
 				pool.removeTx(txs[i].Hash(), true)
 				drop--
-				queuedRateLimitCounter.Inc(1)
+				queuedRateLimitMeter.Mark(1)
 			}
 		}
 	}
@@ -1143,11 +1191,11 @@ func (pool *TxPool) demoteUnexecutables() {
 		nonce := pool.currentState.GetNonce(addr)
 
 		// Drop all transactions that are deemed too old (low nonce)
-		for _, tx := range list.Forward(nonce) {
+		olds := list.Forward(nonce)
+		for _, tx := range olds {
 			hash := tx.Hash()
-			log.Trace("Removed old pending transaction", "hash", hash)
 			pool.all.Remove(hash)
-			pool.priced.Removed()
+			log.Trace("Removed old pending transaction", "hash", hash)
 		}
 		// Drop all transactions that are too costly (low balance or out of gas), and queue any invalids back for later
 		drops, invalids := list.Filter(pool.currentState.GetBalance(addr), pool.currentMaxGas)
@@ -1155,21 +1203,28 @@ func (pool *TxPool) demoteUnexecutables() {
 			hash := tx.Hash()
 			log.Trace("Removed unpayable pending transaction", "hash", hash)
 			pool.all.Remove(hash)
-			pool.priced.Removed()
-			pendingNofundsCounter.Inc(1)
 		}
+		pool.priced.Removed(len(olds) + len(drops))
+		pendingNofundsMeter.Mark(int64(len(drops)))
+
 		for _, tx := range invalids {
 			hash := tx.Hash()
 			log.Trace("Demoting pending transaction", "hash", hash)
 			pool.enqueueTx(hash, tx)
 		}
+		pendingCounter.Dec(int64(len(olds) + len(drops) + len(invalids)))
+		if pool.locals.contains(addr) {
+			localCounter.Dec(int64(len(olds) + len(drops) + len(invalids)))
+		}
 		// If there's a gap in front, alert (should never happen) and postpone all transactions
 		if list.Len() > 0 && list.txs.Get(nonce) == nil {
-			for _, tx := range list.Cap(0) {
+			gapped := list.Cap(0)
+			for _, tx := range gapped {
 				hash := tx.Hash()
 				log.Error("Demoting invalidated transaction", "hash", hash)
 				pool.enqueueTx(hash, tx)
 			}
+			pendingCounter.Inc(int64(len(gapped)))
 		}
 		// Delete the entire queue entry if it became empty.
 		if list.Empty() {

eth/downloader/statesync.go

@@ -442,9 +442,7 @@ func (s *stateSync) process(req *stateReq) (int, error) {
 		default:
 			return successful, fmt.Errorf("invalid state node %s: %v", hash.TerminalString(), err)
 		}
-		if _, ok := req.tasks[hash]; ok {
+		delete(req.tasks, hash)
-			delete(req.tasks, hash)
-		}
 	}
 	// Put unfulfilled tasks back into the retry queue
 	npeers := s.d.peers.Len()

ethdb/leveldb/leveldb.go

@@ -67,6 +67,7 @@ type Database struct {
 	compWriteMeter   metrics.Meter // Meter for measuring the data written during compaction
 	writeDelayNMeter metrics.Meter // Meter for measuring the write delay number due to database compaction
 	writeDelayMeter  metrics.Meter // Meter for measuring the write delay duration due to database compaction
+	diskSizeGauge    metrics.Gauge // Gauge for tracking the size of all the levels in the database
 	diskReadMeter    metrics.Meter // Meter for measuring the effective amount of data read
 	diskWriteMeter   metrics.Meter // Meter for measuring the effective amount of data written
 
@@ -112,6 +113,7 @@ func New(file string, cache int, handles int, namespace string) (*Database, erro
 	ldb.compTimeMeter = metrics.NewRegisteredMeter(namespace+"compact/time", nil)
 	ldb.compReadMeter = metrics.NewRegisteredMeter(namespace+"compact/input", nil)
 	ldb.compWriteMeter = metrics.NewRegisteredMeter(namespace+"compact/output", nil)
+	ldb.diskSizeGauge = metrics.NewRegisteredGauge(namespace+"disk/size", nil)
 	ldb.diskReadMeter = metrics.NewRegisteredMeter(namespace+"disk/read", nil)
 	ldb.diskWriteMeter = metrics.NewRegisteredMeter(namespace+"disk/write", nil)
 	ldb.writeDelayMeter = metrics.NewRegisteredMeter(namespace+"compact/writedelay/duration", nil)
@@ -233,7 +235,7 @@ func (db *Database) meter(refresh time.Duration) {
 	// Create the counters to store current and previous compaction values
 	compactions := make([][]float64, 2)
 	for i := 0; i < 2; i++ {
-		compactions[i] = make([]float64, 3)
+		compactions[i] = make([]float64, 4)
 	}
 	// Create storage for iostats.
 	var iostats [2]float64
@@ -279,7 +281,7 @@ func (db *Database) meter(refresh time.Duration) {
 			if len(parts) != 6 {
 				break
 			}
-			for idx, counter := range parts[3:] {
+			for idx, counter := range parts[2:] {
 				value, err := strconv.ParseFloat(strings.TrimSpace(counter), 64)
 				if err != nil {
 					db.log.Error("Compaction entry parsing failed", "err", err)
@@ -290,16 +292,18 @@ func (db *Database) meter(refresh time.Duration) {
 			}
 		}
 		// Update all the requested meters
+		if db.diskSizeGauge != nil {
+			db.diskSizeGauge.Update(int64(compactions[i%2][0] * 1024 * 1024))
+		}
 		if db.compTimeMeter != nil {
-			db.compTimeMeter.Mark(int64((compactions[i%2][0] - compactions[(i-1)%2][0]) * 1000 * 1000 * 1000))
+			db.compTimeMeter.Mark(int64((compactions[i%2][1] - compactions[(i-1)%2][1]) * 1000 * 1000 * 1000))
 		}
 		if db.compReadMeter != nil {
-			db.compReadMeter.Mark(int64((compactions[i%2][1] - compactions[(i-1)%2][1]) * 1024 * 1024))
+			db.compReadMeter.Mark(int64((compactions[i%2][2] - compactions[(i-1)%2][2]) * 1024 * 1024))
 		}
 		if db.compWriteMeter != nil {
-			db.compWriteMeter.Mark(int64((compactions[i%2][2] - compactions[(i-1)%2][2]) * 1024 * 1024))
+			db.compWriteMeter.Mark(int64((compactions[i%2][3] - compactions[(i-1)%2][3]) * 1024 * 1024))
 		}
-
 		// Retrieve the write delay statistic
 		writedelay, err := db.db.GetProperty("leveldb.writedelay")
 		if err != nil {

metrics/cpu.go

@@ -0,0 +1,36 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package metrics
+
+import "github.com/elastic/gosigar"
+
+// CPUStats is the system and process CPU stats.
+type CPUStats struct {
+	GlobalTime int64 // Time spent by the CPU working on all processes
+	GlobalWait int64 // Time spent by waiting on disk for all processes
+	LocalTime  int64 // Time spent by the CPU working on this process
+}
+
+// ReadCPUStats retrieves the current CPU stats.
+func ReadCPUStats(stats *CPUStats) {
+	global := gosigar.Cpu{}
+	global.Get()
+
+	stats.GlobalTime = int64(global.User + global.Nice + global.Sys)
+	stats.GlobalWait = int64(global.Wait)
+	stats.LocalTime = getProcessCPUTime()
+}

metrics/cpu_syscall.go

@@ -0,0 +1,35 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// +build !windows
+
+package metrics
+
+import (
+	"syscall"
+
+	"github.com/ethereum/go-ethereum/log"
+)
+
+// getProcessCPUTime retrieves the process' CPU time since program startup.
+func getProcessCPUTime() int64 {
+	var usage syscall.Rusage
+	if err := syscall.Getrusage(syscall.RUSAGE_SELF, &usage); err != nil {
+		log.Warn("Failed to retrieve CPU time", "err", err)
+		return 0
+	}
+	return int64(usage.Utime.Sec+usage.Stime.Sec)*100 + int64(usage.Utime.Usec+usage.Stime.Usec)/10000 //nolint:unconvert
+}

metrics/cpu_windows.go

@@ -0,0 +1,23 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package metrics
+
+// getProcessCPUTime returns 0 on Windows as there is no system call to resolve
+// the actual process' CPU time.
+func getProcessCPUTime() int64 {
+	return 0
+}

metrics/metrics.go

@@ -61,18 +61,27 @@ func CollectProcessMetrics(refresh time.Duration) {
 	if !Enabled {
 		return
 	}
+	refreshFreq := int64(refresh / time.Second)
+
 	// Create the various data collectors
+	cpuStats := make([]*CPUStats, 2)
 	memstats := make([]*runtime.MemStats, 2)
 	diskstats := make([]*DiskStats, 2)
 	for i := 0; i < len(memstats); i++ {
+		cpuStats[i] = new(CPUStats)
 		memstats[i] = new(runtime.MemStats)
 		diskstats[i] = new(DiskStats)
 	}
 	// Define the various metrics to collect
+	cpuSysLoad := GetOrRegisterGauge("system/cpu/sysload", DefaultRegistry)
+	cpuSysWait := GetOrRegisterGauge("system/cpu/syswait", DefaultRegistry)
+	cpuProcLoad := GetOrRegisterGauge("system/cpu/procload", DefaultRegistry)
+
+	memPauses := GetOrRegisterMeter("system/memory/pauses", DefaultRegistry)
 	memAllocs := GetOrRegisterMeter("system/memory/allocs", DefaultRegistry)
 	memFrees := GetOrRegisterMeter("system/memory/frees", DefaultRegistry)
-	memInuse := GetOrRegisterMeter("system/memory/inuse", DefaultRegistry)
+	memHeld := GetOrRegisterGauge("system/memory/held", DefaultRegistry)
-	memPauses := GetOrRegisterMeter("system/memory/pauses", DefaultRegistry)
+	memUsed := GetOrRegisterGauge("system/memory/used", DefaultRegistry)
 
 	var diskReads, diskReadBytes, diskWrites, diskWriteBytes Meter
 	var diskReadBytesCounter, diskWriteBytesCounter Counter
@@ -91,11 +100,17 @@ func CollectProcessMetrics(refresh time.Duration) {
 		location1 := i % 2
 		location2 := (i - 1) % 2
 
+		ReadCPUStats(cpuStats[location1])
+		cpuSysLoad.Update((cpuStats[location1].GlobalTime - cpuStats[location2].GlobalTime) / refreshFreq)
+		cpuSysWait.Update((cpuStats[location1].GlobalWait - cpuStats[location2].GlobalWait) / refreshFreq)
+		cpuProcLoad.Update((cpuStats[location1].LocalTime - cpuStats[location2].LocalTime) / refreshFreq)
+
 		runtime.ReadMemStats(memstats[location1])
+		memPauses.Mark(int64(memstats[location1].PauseTotalNs - memstats[location2].PauseTotalNs))
 		memAllocs.Mark(int64(memstats[location1].Mallocs - memstats[location2].Mallocs))
 		memFrees.Mark(int64(memstats[location1].Frees - memstats[location2].Frees))
-		memInuse.Mark(int64(memstats[location1].Alloc - memstats[location2].Alloc))
+		memHeld.Update(int64(memstats[location1].HeapSys - memstats[location1].HeapReleased))
-		memPauses.Mark(int64(memstats[location1].PauseTotalNs - memstats[location2].PauseTotalNs))
+		memUsed.Update(int64(memstats[location1].Alloc))
 
 		if ReadDiskStats(diskstats[location1]) == nil {
 			diskReads.Mark(diskstats[location1].ReadCount - diskstats[location2].ReadCount)

p2p/metrics.go

@@ -25,18 +25,17 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/ethereum/go-ethereum/p2p/enode"
-
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 )
 
 const (
-	MetricsInboundConnects  = "p2p/InboundConnects"  // Name for the registered inbound connects meter
+	MetricsInboundTraffic   = "p2p/ingress" // Name for the registered inbound traffic meter
-	MetricsInboundTraffic   = "p2p/InboundTraffic"   // Name for the registered inbound traffic meter
+	MetricsOutboundTraffic  = "p2p/egress"  // Name for the registered outbound traffic meter
-	MetricsOutboundConnects = "p2p/OutboundConnects" // Name for the registered outbound connects meter
+	MetricsOutboundConnects = "p2p/dials"   // Name for the registered outbound connects meter
-	MetricsOutboundTraffic  = "p2p/OutboundTraffic"  // Name for the registered outbound traffic meter
+	MetricsInboundConnects  = "p2p/serves"  // Name for the registered inbound connects meter
 
 	MeteredPeerLimit = 1024 // This amount of peers are individually metered
 )
@@ -46,6 +45,7 @@ var (
 	ingressTrafficMeter = metrics.NewRegisteredMeter(MetricsInboundTraffic, nil)   // Meter metering the cumulative ingress traffic
 	egressConnectMeter  = metrics.NewRegisteredMeter(MetricsOutboundConnects, nil) // Meter counting the egress connections
 	egressTrafficMeter  = metrics.NewRegisteredMeter(MetricsOutboundTraffic, nil)  // Meter metering the cumulative egress traffic
+	activePeerCounter   = metrics.NewRegisteredCounter("p2p/peers", nil)           // Gauge tracking the current peer count
 
 	PeerIngressRegistry = metrics.NewPrefixedChildRegistry(metrics.EphemeralRegistry, MetricsInboundTraffic+"/")  // Registry containing the peer ingress
 	PeerEgressRegistry  = metrics.NewPrefixedChildRegistry(metrics.EphemeralRegistry, MetricsOutboundTraffic+"/") // Registry containing the peer egress
@@ -124,6 +124,8 @@ func newMeteredConn(conn net.Conn, ingress bool, ip net.IP) net.Conn {
 	} else {
 		egressConnectMeter.Mark(1)
 	}
+	activePeerCounter.Inc(1)
+
 	return &meteredConn{
 		Conn:      conn,
 		ip:        ip,
@@ -198,6 +200,7 @@ func (c *meteredConn) Close() error {
 			IP:      c.ip,
 			Elapsed: time.Since(c.connected),
 		})
+		activePeerCounter.Dec(1)
 		return err
 	}
 	id := c.id
@@ -209,6 +212,7 @@ func (c *meteredConn) Close() error {
 			IP:   c.ip,
 			ID:   id,
 		})
+		activePeerCounter.Dec(1)
 		return err
 	}
 	ingress, egress := uint64(c.ingressMeter.Count()), uint64(c.egressMeter.Count())
@@ -229,5 +233,6 @@ func (c *meteredConn) Close() error {
 		Ingress: ingress,
 		Egress:  egress,
 	})
+	activePeerCounter.Dec(1)
 	return err
 }

p2p/server.go

@@ -685,9 +685,8 @@ running:
 			// This channel is used by RemoveTrustedPeer to remove an enode
 			// from the trusted node set.
 			srv.log.Trace("Removing trusted node", "node", n)
-			if _, ok := trusted[n.ID()]; ok {
+			delete(trusted, n.ID())
-				delete(trusted, n.ID())
+
-			}
 			// Unmark any already-connected peer as trusted
 			if p, ok := peers[n.ID()]; ok {
 				p.rw.set(trustedConn, false)