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feat: iavl, db & disk stats logging (#352)
* feat: iavl, db & disk stats logging when IAVL_DEV env. var. is set * chore: logIoStats get built on linux only * docs: update CHANGELOG.md * chore: update go.sum
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| // +build linux | ||
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| package baseapp | ||
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| import ( | ||
| "bufio" | ||
| "io" | ||
| "os" | ||
| "regexp" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
|
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| iavltree "github.com/line/iavl/v2" | ||
| "github.com/line/ostracon/libs/log" | ||
| ) | ||
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| // log iavl, db & disk stats if IAVL_DEV env. var. is set | ||
| var ( | ||
| logIoDevNop string = " nop" | ||
| logIoDev *string = nil | ||
| tStats time.Time | ||
| iavlSetCount, iavlSetBytes, iavlDelCount uint64 | ||
| diskReadCount, diskReadBytes, diskWriteCount, diskWriteBytes uint64 | ||
| ) | ||
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| // read disk io stats from /proc/diskstats in linux | ||
| func getDeviceIoStats(device string) (readCount, readBytes, writeCount, writeBytes uint64, err error) { | ||
| inf, err := os.Open("/proc/diskstats") | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer inf.Close() | ||
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| in := bufio.NewReader(inf) | ||
| r := regexp.MustCompile(`\s+`) | ||
| for { | ||
| line, err2 := in.ReadString('\n') | ||
| if err2 != nil { | ||
| if err2 == io.EOF { | ||
| break | ||
| } | ||
| err = err2 | ||
| return | ||
| } | ||
| parts := r.Split(strings.TrimSpace(line), -1) | ||
| if len(parts) < 10 { | ||
| continue | ||
| } | ||
| if len(device) > 0 && device != parts[2] { | ||
| continue | ||
| } else if len(device) == 0 && parts[1] != "0" { | ||
| continue | ||
| } | ||
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| rCount, e1 := strconv.ParseUint(parts[3], 10, 64) | ||
| rSectors, e2 := strconv.ParseUint(parts[5], 10, 64) | ||
| wCount, e3 := strconv.ParseUint(parts[7], 10, 64) | ||
| wSectors, e4 := strconv.ParseUint(parts[9], 10, 64) | ||
| if e1 != nil || e2 != nil || e3 != nil || e4 != nil { | ||
| continue | ||
| } | ||
|
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| readCount += rCount | ||
| readBytes += rSectors * 512 | ||
| writeCount += wCount | ||
| writeBytes += wSectors * 512 | ||
| } | ||
| return readCount, readBytes, writeCount, writeBytes, err | ||
| } | ||
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| func logIoStats(logger log.Logger) { | ||
| if logIoDev == &logIoDevNop { | ||
| return | ||
| } else if logIoDev == nil { | ||
| // not set yet | ||
| if dev := os.Getenv("IAVL_DEV"); len(dev) > 0 { | ||
| logIoDev = &dev | ||
| } else { | ||
| logIoDev = &logIoDevNop | ||
| return | ||
| } | ||
| } | ||
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| now := time.Now() | ||
| dt := now.Sub(tStats) | ||
| tStats = now | ||
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| newSetCount, newSetBytes, newDelCount := iavltree.GetDBStats() | ||
| newReadCount, newReadBytes, newWriteCount, newWriteBytes, _ := getDeviceIoStats(*logIoDev) | ||
| diffSetCount, diffSetBytes, diffDelCount := newSetCount-iavlSetCount, newSetBytes-iavlSetBytes, newDelCount-iavlDelCount | ||
| _, diffReadBytes, _, diffWriteBytes := newReadCount-diskReadCount, newReadBytes-diskReadBytes, newWriteCount-diskWriteCount, newWriteBytes-diskWriteBytes | ||
| iavlSetCount, iavlSetBytes, iavlDelCount = newSetCount, newSetBytes, newDelCount | ||
| diskReadCount, diskReadBytes, diskWriteCount, diskWriteBytes = newReadCount, newReadBytes, newWriteCount, newWriteBytes | ||
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| // read & write bytes per second | ||
| rps, wps := int64(0), int64(0) | ||
| if dt.Milliseconds() > 0 && dt.Seconds() < 1000 { | ||
| rps = int64(diffReadBytes) * 1000 / dt.Milliseconds() | ||
| wps = int64(diffWriteBytes) * 1000 / dt.Milliseconds() | ||
| } | ||
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| // write amplification factors | ||
| wampf := float64(0) | ||
| if diffSetBytes > 0 { | ||
| wampf = float64(diffWriteBytes*1000/diffSetBytes) / 1000.0 | ||
| } | ||
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| logger.Info("io_stats", "set_count", diffSetCount, | ||
| "set_bytes", diffSetBytes, "del_count", diffDelCount, | ||
| "read-bytes", diffReadBytes, "rps", rps, | ||
| "write_bytes", diffWriteBytes, "wps", wps, | ||
| "write_amp_f", wampf, "ellapsed", float64(dt.Milliseconds())/1000.0) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| // +build !linux | ||
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| package baseapp | ||
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| func logIoStats(logger log.Logger) { | ||
| return | ||
| } |
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