Commit Graph

41 Commits

Author SHA1 Message Date
Mamy Ratsimbazafy 5d7f9c3a04
Consensus object pools [reorg 4/5] (#2374)
* Add documentation

* make test doesn't try to build the beacon node :/
2021-03-04 10:13:44 +01:00
Mamy André-Ratsimbazafy 597374605a Fork choice update for HF1 2021-02-19 15:57:20 +02:00
tersec 8d25663681
remove several IntSet usages in lieu of seq[ValidatorIndex] (#2288)
* remove several IntSet usages in lieu of seq[ValidatorIndex]

* convert smaller types to larger types

* larger type, again
2021-02-08 08:27:30 +01:00
tersec 1bdbf099cc
use IntSet rather than HashSet[ValidatorIndex] (#2267)
* use IntSet rather than HashSet[ValidatorIndex]

* add bounds check before uint64 -> int conversion

* use intsets in block transitions

* remove superfluous Nim issue explanation/reference
2021-01-26 12:52:00 +01:00
tersec 1d7fb2ed0c
remove {.inline.} pragmas (#2033)
* remove {.inline.} pragmas

* re-add inline on bitseqs functions and tweak inlining threshold

* remove macOS/LLVM inlining setting; revert non-init/module-local/tests inline pragma removal
2020-11-20 11:00:22 +01:00
Jacek Sieka 771c1d092a
hotfix fork choice score application (#2041)
Depending on the order of nodes in fork choice, it seems that the break
here could cause some scores not to be applied correctly
2020-11-19 15:11:08 +01:00
Zahary Karadjov 14b2d4324d openarray -> openArray 2020-11-03 23:23:10 +02:00
Jacek Sieka 7c0b4d28d2 speed up reward/penalty calculation
Calculating rewards/penalties is slow due to how we compute sets of
attestations validators then use the sets for inclusion checks, to see
who attested. The dominant function during validated block processing /
epoch processing is hash set building and lookup.

This PR inverts the flow by removing the sets and creating a single
large validator status list, then applying all relevant state
attestations, then updating rewards and penalties.

This provides a 10x speedup to epoch processing which in turn speeds up
both empty slot and block processing - for example, on startup, we
replay all non-finalized blocks to prime fork choice - the same when
validating attestations or replaying states on reorg.
2020-10-23 19:23:36 +03:00
Jacek Sieka 499e5ca991
misc memory and perf fixes (#1899)
* misc memory and perf fixes

* use EpochRef for attestation aggregation
* compress effective balances in memory (medalla unfinalized: 4gb ->
1gb)
* avoid hitting db when rewinding to head or clearance state
* avoid hitting db when blocks can be applied to in-memory state -
speeds up startup considerably
* avoid storing epochref in fork choice
* simplify and speed up beacon block creation flow - avoids state reload
thanks to head rewind optimization
* iterator-based committee and attestation participation help avoid lots
of small memory allocations throughout epoch transition (40% speedup on
epoch processing, for example during startup)

* add constant for threshold
2020-10-22 12:53:33 +02:00
Dustin Brody 9a543e0af7 partial hotfix for #1879 crash 2020-10-16 11:46:19 +03:00
tersec b79e5f8af5
update nim-beacon-chain to nimbus-eth2 in beacon_chain/, ncli/, tests/, and README.md (#1843) 2020-10-08 19:02:05 +00:00
Jacek Sieka 99afafecd7
fix quadratic seq assignment in fork choice (#1805)
this would reallocate the attestation queue on every attestation and
other call to update_time, causing quite the overhead (~10% cpu spent
when gossiping)
2020-10-03 23:43:27 +02:00
Mamy Ratsimbazafy 0280d6c73e
Revisiting log levels (#1788)
* Update log level - https://github.com/status-im/nim-beacon-chain/issues/1779 https://github.com/status-im/nim-beacon-chain/issues/1785

* Address review comments

* Document the logging strategy [skip ci]
2020-10-01 20:56:42 +02:00
Jacek Sieka c76305f824
fix some todo (#1645)
* remove some superfluous gcsafes
* remove getTailState (unused)
* don't store old epochrefs in blocks
* document attestation pool a bit
* remove `pcs =` cruft from log
2020-09-14 14:50:03 +00:00
tersec 3d5f24f14c
stop discarding future epochs; remove a StateCache() construction (#1610)
* stop discarding non-existent future epochs during epoch state transitions; remove a pointless StateCache() construction in advance_slots()

* update nbench to pass StateCache to process_slots()
2020-09-07 15:04:33 +00:00
tersec 02ddc41960
ignore sqlite WAL journals in git; increase logging priority of attestation/block sending (#1590)
* ignore sqlite WAL journal files in git; switch attestation resolved from info to debug

* promote sent attestations/blocks to notice rather than demote resolved attestations/blocks to debug
2020-08-31 14:34:04 +00:00
Jacek Sieka fa1621db46
implement clock disparity for attestation validation (#1568)
This implements disparity, resolving a part of
https://github.com/status-im/nim-beacon-chain/issues/1367

* make BeaconTime a duration for fractional seconds
* factor out attestation/aggregate validation
* simplify recording of queued attestations
* simplify attestation signature check
* fix blocks_received metric
* add some trivial validation tests
* remove unresolved attestation table - attestations for unknown blocks
are dropped instead (cannot verify their signature)
2020-08-27 09:34:12 +02:00
Mamy Ratsimbazafy 81788becfc
Fork choice - almost free pruning - fix #1534 (#1535)
* initial - cheaper pruning - addresses  #1534

* Pass tests: update offset when pruning, proper handling of pruned parents

* Use options instead of nil for nilable newHead (finalization passing but rootcause not solved)

* First line of defense against stackoverflow in tests

* Fix compute_delta offset after pruning

* Rebase fix - medalla ready

* Remove Option[BlockRef]
2020-08-26 17:23:34 +02:00
Jacek Sieka 9244ae7a38 more speedups
* evaluate block attestations under the epochref of the block - this is
what the state transition function does
* avoid copying attestation seq unnecessarily
* avoid unnecessary hashset for unslashed indices
2020-08-19 14:51:04 +03:00
Jacek Sieka 9da8b2692f
simplify fork choice code (#1521)
* standardize init
* avoid loading state on init
* avoid some inefficient exception-based code
* remove some TODO
2020-08-18 16:56:32 +02:00
Jacek Sieka 79ff4f7c41
fork choice refresh (#1520)
* add attestation processing queue so attestations don't get processed
too early
* rework justified slot delay to match spec / lighthouse better
* keep less state in fork choice
* request epochref less
2020-08-17 20:36:13 +02:00
Jacek Sieka 5da25e76be
avoid rewind in fork choice application (#1489) 2020-08-12 04:49:52 +00:00
Jacek Sieka c6674de5d2 use epoch ref to update fork choice
this dramatically speeds up startup in long periods of non-finality
2020-08-04 20:00:31 +03:00
Viktor Kirilov 0a96e5f564
renamed CandidateChains to ChainDagRef and made the Quarantine type a ref type so there is a single instance in the beacon node (#1407) 2020-07-31 14:49:06 +00:00
Viktor Kirilov c032366547
removed the BlockPool type and all of the proxy functions around it (#1401)
* removed the BlockPool type and all of the proxy functions around it - passing the chain DAG and the quarantine explicitly where appropriately - they don't need to be bundled in a type

* fixed the build after the rebase
2020-07-30 21:18:17 +02:00
Jacek Sieka c5fecd472f
more fork-choice fixes (#1388)
* more fork-choice fixes

* use target block/epoch to validate attestations
* make addLocalValidators sync
* add current and previous epoch to cache before doing state transition
* update head state using clearance state as a shortcut, when possible
* use blockslot for fork choice balances
* send attestations using epochref cache

* fix invalid finalized parent being used

also simplify epoch block traversal

* single error handling style in fork choice

* import fix, remove unused async
2020-07-30 17:48:25 +02:00
Jacek Sieka 157ddd2ac4
Fork choice fixes 5 (#1381)
* limit attestations kept in attestation pool

With fork choice updated, the attestation pool only needs to keep track
of attestations that will eventually end up in blocks - we can thus
limit the horizon of attestations that we keep more aggressively.

To get here, we expose getEpochRef which gets metadata about a
particular epochref, and make sure to populate it when a block is added
- this ensures that state rewinds during block addition are minimized.

In addition, we'll use the target root/epoch when validating
attestations - this helps minimize the number of different states that
we need to rewind to, in general.

* remove CandidateChains.justifiedState

unused

* remove BlockPools.Head object

* avoid quadratic quarantine loop

* fix
2020-07-28 13:54:32 +00:00
Jacek Sieka fd4d319450
Use fork v2 (#1358)
* fork choice fixes, round 3

* introduce checkpoint tracker
* split out fork choice backend that is independent of dag
* correctly update best checkpoint to use for head selection
* correctly consider wall clock when processing attestations
* preload head history only (only one history is loaded from database
anyway)
* love the DAG

* switch to fork choice v2

also remove BlockRef.children

* fix
2020-07-25 21:41:12 +02:00
Jacek Sieka fb2f742972
Fork choice fixes 2 (#1356)
* fork choice cleanup

* enable v2 pruning
* prefer `get_current_epoch`
* fix finalization check to use correct epoch

* small cleanups

* add `count_active_validators`
* remove misleading logs
* fix justified checkpoint slot calculation in rpc
2020-07-22 23:01:44 +02:00
Jacek Sieka f0720faf17
Fork choice fixes (#1350)
* remove cruft

* reenable fork choice and fix several issues

* in addForkChoice_v2, the `.error` field would be accessed even when
Result is ok
* remove workaround for invalid block structure in fork choice
* fix `tmpState` being used recursively in callback, causing state
corruption while processing attestation
* fix block callback being called twice per block
* pass state to callback to avoid unnecessary rewinding

* enable head select, fix another bug

* never use `get` without `isOk`
* log nil blockref in case blockref is nil

* add missing error checking

* use correct epoch when updating attestation message
2020-07-22 11:42:55 +02:00
Jacek Sieka 8b01284b0e
cache block hash (#1329)
hash_tree_root was turning up when running beacon_node, turns out to be
repeated hash_tree_root invocations - this pr brings them back down to
normal.

this PR caches the root of a block in the SignedBeaconBlock object -
this has the potential downside that even invalid blocks will be hashed
(as part of deserialization) - later, one could imagine delaying this
until checks have passed

there's also some cleanup of the `cat=` logs which were applied randomly
and haphazardly, and to a large degree are duplicated by other
information in the log statements - in particular, topics fulfill the
same role
2020-07-16 15:16:51 +02:00
Mamy Ratsimbazafy 3cdae9f6be
Dual headed fork choice [Revolution] (#1238)
* Dual headed fork choice

* fix finalizedEpoch not moving

* reduce fork choice verbosity

* Add failing tests due to pruning

* Properly handle duplicate blocks in sync

* test_block_pool also add a test for duplicate blocks

* comments addressing review

* Fix fork choice v2, was missing integrating block proposed

* remove a spurious debug writeStackTrace

* update block_sim

* Use OrderedTable to ensure that we always load parents before children in fork choice

* Load the DAG data in fork choice at init if there is some (can sync witti)

* Cluster of quarantined blocks were not properly added to the fork choice

* Workaround async gcsafe warnings

* Update blockpoool tests

* Do the callback before clearing the quarantine

* Revert OrderedTable, implement topological sort of DAG, allow forkChoice to be initialized from arbitrary finalized heads

* Make it work with latest devel - Altona readyness

* Add a recovery mechanism when forkchoice desyncs with blockpool

* add the current problematic node to the stack

* Fix rebase indentation bug (but still producing invalid block)

* Fix cache at epoch boundaries and lateBlock addition
2020-07-09 11:29:32 +02:00
Mamy Ratsimbazafy 902093f57c
Revert "Dual headed fork choice [Reloaded] (#1223)" (#1234)
This reverts commit 6836d41ebd.
2020-06-25 11:36:03 +02:00
Mamy Ratsimbazafy 6836d41ebd
Dual headed fork choice [Reloaded] (#1223)
* Dual headed fork choice

* fix finalizedEpoch not moving

* reduce fork choice verbosity

* Add failing tests due to pruning

* Properly handle duplicate blocks in sync

* test_block_pool also add a test for duplicate blocks

* comments addressing review
2020-06-24 20:24:36 +02:00
Jacek Sieka 60176b8cc1
Revert "Dual headed fork choice (#1163)" (#1181)
This reverts commit 090f06614a.
2020-06-16 09:46:00 +02:00
Mamy Ratsimbazafy 090f06614a
Dual headed fork choice (#1163)
* Dual headed fork choice

* fix finalizedEpoch not moving

* reduce fork choice verbosity
2020-06-16 00:40:16 +02:00
Mamy Ratsimbazafy ce897fe83f
[Split fork choice PR] Derisk-ed attestation checks changes (#1154)
* Derisked attestation pool improvements

* tune down frequent logs

* VoteTracker logging
2020-06-10 08:58:12 +02:00
Dustin Brody 05d1d1246a bump a couple more eth2 phase0 spec refs to v0.11.1 2020-04-17 16:37:52 +03:00
Jacek Sieka 8eafa6e094
fork: push defect (#888) 2020-04-15 11:21:22 +02:00
tersec 31bf8fa408
remove all but one UnusedImport warning (#881)
* remove all but one UnusedImport warning

* bump a few more spec version references from v0.10.1 to v0.11.1

* more v0.10.1 spec reference updates/removals

* yet more v0.10.1 spec reference updates
2020-04-10 16:06:24 +02:00
Mamy Ratsimbazafy cbc998ed93
[Ready 1/2] Fork choice rewrite (#865)
* initial fork-choice refactor

* Add fork_choice test for "no votes"

* Initial test with voting: fix handling of unknown validators and parent blocks

* Fix tiebreak of votes

* Cleanup debugging traces

* Complexify the vote test

* fakeHash use the bigEndian repr of number + fix tiebreak for good

* Stash changes: found critical bug in nimcrypto `==` and var openarray

* Passing fork choice tests with varying votes

* Add FFG fork choice scenario + fork choice to the test suite

* Not sure why lmdb / rocksdb reappeared in rebase

* Add sanity checks to .nimble file + integrate fork choice tests to the test DB and test timing

* Cleanup debugging echos

* nimcrypto fix https://github.com/status-im/nim-beacon-chain/pull/864 as been merged, remove TODO comment

* Turn fork choice exception-free

* Cleanup "result" to ensure early return is properly used

* Add a comment on private/public error code vs Result

* result -> results following https://github.com/status-im/nim-beacon-chain/pull/866

* Address comments:
- raises: [Defect] doesn't work -> TODO
- process_attestation cannot fail
- try/except as expression pending Nim v1.2.0
- cleanup TODOs

* re-enable all sanity checks

* tag no raise for process_attestation

* use raises defect everywhere in fork choice and fix process_attestation test
2020-04-09 18:15:00 +02:00