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optimize slice allocations in walk

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This commit is contained in:
vyzo 2022-01-26 21:55:24 +02:00
parent a87239e802
commit f07ce297f6
1 changed files with 4 additions and 2 deletions
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6
blockstore/splitstore/splitstore_compact.go
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@ -624,7 +624,9 @@ func (s *SplitStore) walkChain(ts *types.TipSet, inclState, inclMsgs abi.ChainEp
visitor ObjectVisitor, f func(cid.Cid) error) error { visitor ObjectVisitor, f func(cid.Cid) error) error {
var walked ObjectVisitor var walked ObjectVisitor
var mx sync.Mutex var mx sync.Mutex
toWalk := ts.Cids() // we copy the tipset first into a new slice, which allows us to reuse it in every epoch.
toWalk := make([]cid.Cid, len(ts.Cids()))
copy(toWalk, ts.Cids())
walkCnt := new(int64) walkCnt := new(int64)
scanCnt := new(int64) scanCnt := new(int64)
@ -717,7 +719,7 @@ func (s *SplitStore) walkChain(ts *types.TipSet, inclState, inclMsgs abi.ChainEp
workch <- c workch <- c
} }
close(workch) close(workch)
toWalk = nil toWalk = toWalk[:0]
g := new(errgroup.Group) g := new(errgroup.Group)
for i := 0; i < workers; i++ { for i := 0; i < workers; i++ {