73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify it
|
|
// under the terms of the GNU General Public License as published by the Free
|
|
// Software Foundation, either version 3 of the License, or (at your option)
|
|
// any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful, but WITHOUT
|
|
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
// more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License along
|
|
// with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// +build !solaris,!windows
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"runtime"
|
|
"syscall"
|
|
"time"
|
|
|
|
"github.com/syncthing/syncthing/internal/protocol"
|
|
)
|
|
|
|
func init() {
|
|
if innerProcess && os.Getenv("STPERFSTATS") != "" {
|
|
go savePerfStats(fmt.Sprintf("perfstats-%d.csv", syscall.Getpid()))
|
|
}
|
|
}
|
|
|
|
func savePerfStats(file string) {
|
|
fd, err := os.Create(file)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
var prevUsage int64
|
|
var prevTime int64
|
|
var rusage syscall.Rusage
|
|
var memstats runtime.MemStats
|
|
var prevIn, prevOut uint64
|
|
|
|
t0 := time.Now()
|
|
for t := range time.NewTicker(250 * time.Millisecond).C {
|
|
syscall.Getrusage(syscall.RUSAGE_SELF, &rusage)
|
|
curTime := time.Now().UnixNano()
|
|
timeDiff := curTime - prevTime
|
|
curUsage := rusage.Utime.Nano() + rusage.Stime.Nano()
|
|
usageDiff := curUsage - prevUsage
|
|
cpuUsagePercent := 100 * float64(usageDiff) / float64(timeDiff)
|
|
prevTime = curTime
|
|
prevUsage = curUsage
|
|
in, out := protocol.TotalInOut()
|
|
var inRate, outRate float64
|
|
if timeDiff > 0 {
|
|
inRate = float64(in-prevIn) / (float64(timeDiff) / 1e9) // bytes per second
|
|
outRate = float64(out-prevOut) / (float64(timeDiff) / 1e9) // bytes per second
|
|
}
|
|
prevIn, prevOut = in, out
|
|
|
|
runtime.ReadMemStats(&memstats)
|
|
|
|
startms := int(t.Sub(t0).Seconds() * 1000)
|
|
|
|
fmt.Fprintf(fd, "%d\t%f\t%d\t%d\t%.0f\t%.0f\n", startms, cpuUsagePercent, memstats.Alloc, memstats.Sys-memstats.HeapReleased, inRate, outRate)
|
|
}
|
|
}
|