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trie: add metric to track cache unloading (#3175)

This commit is contained in:
Felix Lange 2016-10-19 16:07:19 +02:00 committed by GitHub
parent 8048f4d4f6
commit 5d9bb0a050
2 changed files with 5 additions and 1 deletions
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1
trie/hasher.go
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@ -60,6 +60,7 @@ func (h *hasher) hash(n node, db DatabaseWriter, force bool) (node, node, error)
if n.canUnload(h.cachegen, h.cachelimit) { if n.canUnload(h.cachegen, h.cachelimit) {
// Unload the node from cache. All of its subnodes will have a lower or equal // Unload the node from cache. All of its subnodes will have a lower or equal
// cache generation number. // cache generation number.
cacheUnloadCounter.Inc(1)
return hash, hash, nil return hash, hash, nil
} }
if !dirty { if !dirty {

5
trie/trie.go
View File

@ -35,7 +35,10 @@ var (
emptyState common.Hash emptyState common.Hash
) )
var cacheMissCounter = metrics.NewRegisteredCounter("trie/cachemiss", nil) var (
cacheMissCounter = metrics.NewRegisteredCounter("trie/cachemiss", nil)
cacheUnloadCounter = metrics.NewRegisteredCounter("trie/cacheunload", nil)
)
// CacheMisses retrieves a global counter measuring the number of cache misses // CacheMisses retrieves a global counter measuring the number of cache misses
// the trie did since process startup. This isn't useful for anything apart from // the trie did since process startup. This isn't useful for anything apart from