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mdbx: runtime options are changeable in Ascedee mode (#771)

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Alex Sharov 2022-12-07 17:10:32 +07:00 committed by GitHub
parent 263a9e3583
commit 3cf9b451e1
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1 changed files with 5 additions and 3 deletions
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8
kv/mdbx/kv_mdbx.go
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@ -30,7 +30,6 @@ import (
"github.com/c2h5oh/datasize"
stack2 "github.com/go-stack/stack"
"github.com/ledgerwatch/erigon-lib/common/cmp"
"github.com/ledgerwatch/erigon-lib/common/dbg"
"github.com/ledgerwatch/erigon-lib/kv"
"github.com/ledgerwatch/log/v3"
@ -257,9 +256,12 @@ func (opts MdbxOpts) Open() (kv.RwDB, error) {
}
opts.pageSize = uint64(in.PageSize)
//nolint
if opts.flags&mdbx.Accede == 0 && opts.flags&mdbx.Readonly == 0 {
}
// erigon using big transactions
// increase "page measured" options. need do it after env.Open() because default are depend on pageSize known only after env.Open()
if opts.flags&mdbx.Accede == 0 && opts.flags&mdbx.Readonly == 0 {
if opts.flags&mdbx.Readonly == 0 {
// 1/8 is good for transactions with a lot of modifications - to reduce invalidation size.
// But Erigon app now using Batch and etl.Collectors to avoid writing to DB frequently changing data.
// It means most of our writes are: APPEND or "single UPSERT per key during transaction"
@ -307,7 +309,7 @@ func (opts MdbxOpts) Open() (kv.RwDB, error) {
}
if opts.roTxsLimiter == nil {
targetSemCount := int64(cmp.Max(32, runtime.GOMAXPROCS(-1)*8))
targetSemCount := int64(runtime.GOMAXPROCS(-1) * 8)
opts.roTxsLimiter = semaphore.NewWeighted(targetSemCount) // 1 less than max to allow unlocking to happen
}
db := &MdbxKV{