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More up to date CPU usage indicator

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This commit is contained in:
Jakob Borg 2014-04-14 12:02:40 +02:00
parent 9d535b13cf
commit fb162ff529
3 changed files with 12 additions and 8 deletions
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8
cmd/syncthing/gui.go
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@ -155,7 +155,7 @@ func restGetNeed(m *Model, w http.ResponseWriter, params martini.Params) {
json.NewEncoder(w).Encode(gfs) json.NewEncoder(w).Encode(gfs)
} }
var cpuUsagePercent float64 var cpuUsagePercent [10]float64 // The last ten seconds
var cpuUsageLock sync.RWMutex var cpuUsageLock sync.RWMutex
func restGetSystem(w http.ResponseWriter) { func restGetSystem(w http.ResponseWriter) {
@ -168,8 +168,12 @@ func restGetSystem(w http.ResponseWriter) {
res["alloc"] = m.Alloc res["alloc"] = m.Alloc
res["sys"] = m.Sys res["sys"] = m.Sys
cpuUsageLock.RLock() cpuUsageLock.RLock()
res["cpuPercent"] = cpuUsagePercent var cpusum float64
for _, p := range cpuUsagePercent {
cpusum += p
}
cpuUsageLock.RUnlock() cpuUsageLock.RUnlock()
res["cpuPercent"] = cpusum / 10
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(res) json.NewEncoder(w).Encode(res)

6
cmd/syncthing/gui_solaris.go
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@ -72,8 +72,7 @@ func trackCPUUsage() {
var prevTime = time.Now().UnixNano() var prevTime = time.Now().UnixNano()
var rusage prusage_t var rusage prusage_t
var pid = os.Getpid() var pid = os.Getpid()
for { for _ = range time.NewTicker(time.Second).C {
time.Sleep(10 * time.Second)
err := solarisPrusage(pid, &rusage) err := solarisPrusage(pid, &rusage)
if err != nil { if err != nil {
warnln(err) warnln(err)
@ -84,7 +83,8 @@ func trackCPUUsage() {
curUsage := rusage.Pr_utime.Nano() + rusage.Pr_stime.Nano() curUsage := rusage.Pr_utime.Nano() + rusage.Pr_stime.Nano()
usageDiff := curUsage - prevUsage usageDiff := curUsage - prevUsage
cpuUsageLock.Lock() cpuUsageLock.Lock()
cpuUsagePercent = 100 * float64(usageDiff) / float64(timeDiff) copy(cpuUsagePercent[1:], cpuUsagePercent[0:])
cpuUsagePercent[0] = 100 * float64(usageDiff) / float64(timeDiff)
cpuUsageLock.Unlock() cpuUsageLock.Unlock()
prevTime = curTime prevTime = curTime
prevUsage = curUsage prevUsage = curUsage

6
cmd/syncthing/gui_unix.go
View File

@ -15,15 +15,15 @@ func trackCPUUsage() {
var prevUsage int64 var prevUsage int64
var prevTime = time.Now().UnixNano() var prevTime = time.Now().UnixNano()
var rusage syscall.Rusage var rusage syscall.Rusage
for { for _ = range time.NewTicker(time.Second).C {
time.Sleep(10 * time.Second)
syscall.Getrusage(syscall.RUSAGE_SELF, &rusage) syscall.Getrusage(syscall.RUSAGE_SELF, &rusage)
curTime := time.Now().UnixNano() curTime := time.Now().UnixNano()
timeDiff := curTime - prevTime timeDiff := curTime - prevTime
curUsage := rusage.Utime.Nano() + rusage.Stime.Nano() curUsage := rusage.Utime.Nano() + rusage.Stime.Nano()
usageDiff := curUsage - prevUsage usageDiff := curUsage - prevUsage
cpuUsageLock.Lock() cpuUsageLock.Lock()
cpuUsagePercent = 100 * float64(usageDiff) / float64(timeDiff) copy(cpuUsagePercent[1:], cpuUsagePercent[0:])
cpuUsagePercent[0] = 100 * float64(usageDiff) / float64(timeDiff)
cpuUsageLock.Unlock() cpuUsageLock.Unlock()
prevTime = curTime prevTime = curTime
prevUsage = curUsage prevUsage = curUsage