/
perf.go
73 lines (62 loc) · 2.01 KB
/
perf.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
package utils
import (
"fmt"
"os"
"runtime"
"runtime/pprof"
"sync/atomic"
"time"
log "github.com/sirupsen/logrus"
"github.com/neuvector/neuvector/share"
)
var profiling int32
func PerfProfile(req *share.CLUSProfilingRequest, prefix string) {
log.WithFields(log.Fields{"methods": req.Methods}).Debug()
if !atomic.CompareAndSwapInt32(&profiling, 0, 1) {
log.Debug("Profiling is running. Exit!")
return
}
defer atomic.StoreInt32(&profiling, 0)
if _, err := os.Stat(share.ProfileFolder); os.IsNotExist(err) {
if err = os.MkdirAll(share.ProfileFolder, 0775); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Failed to create profile folder")
return
}
}
for _, m := range req.Methods {
switch m {
case share.ProfilingMethod_Memory:
log.Debug("profiling memory")
if f, err := os.Create(fmt.Sprintf(share.ProfileMemoryFileFmt, prefix)); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Failed to create memory profiling file")
} else {
pprof.WriteHeapProfile(f)
f.Close()
}
if f, err := os.Create(fmt.Sprintf(share.ProfileMemoryFileFmt, prefix + "gc.")); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Failed to create memory profiling gc file")
} else {
runtime.GC() // get up-to-date statistics
pprof.WriteHeapProfile(f)
f.Close()
}
case share.ProfilingMethod_CPU:
log.Debug("profiling cpu/goroutine")
if f, err := os.Create(fmt.Sprintf(share.ProfileCPUFileFmt, prefix)); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Failed to create cpu profiling file")
} else {
pprof.StartCPUProfile(f)
time.Sleep(time.Second * time.Duration(req.Duration))
pprof.StopCPUProfile()
f.Close()
}
if f, err := os.Create(fmt.Sprintf(share.ProfileGoroutineFileFmt, prefix)); err != nil {
log.WithFields(log.Fields{"error": err}).Error("Failed to create goroutine profiling file")
} else {
pprof.Lookup("goroutine").WriteTo(f, 0)
f.Close()
}
}
}
log.Debug("Profiling is done.")
}