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| author | rjl493456442 <garyrong0905@gmail.com> | 2018-05-25 15:48:16 +0800 |
|---|---|---|
| committer | Péter Szilágyi <peterke@gmail.com> | 2018-06-04 18:46:39 +0800 |
| commit | a20cc75b4a2982917db83370cadd40e26d1b35b6 (patch) | |
| tree | d3f9c30196b0a4d4bb0d4f9c624dfb286867b250 /cmd/geth | |
| parent | b659718fd0aa19c6b5977eb22cd58449bbb824a0 (diff) | |
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cmd/geth: cap cache allowance
Diffstat (limited to 'cmd/geth')
| -rw-r--r-- | cmd/geth/main.go | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/cmd/geth/main.go b/cmd/geth/main.go index 09d9c493d..edf2a557a 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -19,12 +19,16 @@ package main import ( "fmt" + "math" "os" "runtime" + godebug "runtime/debug" "sort" + "strconv" "strings" "time" + "github.com/elastic/gosigar" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts/keystore" "github.com/ethereum/go-ethereum/cmd/utils" @@ -188,6 +192,22 @@ func init() { if err := debug.Setup(ctx); err != nil { return err } + // Cap the cache allowance and tune the garbage colelctor + var mem gosigar.Mem + if err := mem.Get(); err == nil { + allowance := int(mem.Total / 1024 / 1024 / 3) + if cache := ctx.GlobalInt(utils.CacheFlag.Name); cache > allowance { + log.Warn("Sanitizing cache to Go's GC limits", "provided", cache, "updated", allowance) + ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(allowance)) + } + } + // Ensure Go's GC ignores the database cache for trigger percentage + cache := ctx.GlobalInt(utils.CacheFlag.Name) + gogc := math.Max(20, math.Min(100, 100/(float64(cache)/1024))) + + log.Debug("Sanitizing Go's GC trigger", "percent", int(gogc)) + godebug.SetGCPercent(int(gogc)) + // Start system runtime metrics collection go metrics.CollectProcessMetrics(3 * time.Second) |