一、导入包
import _ "net/http/pprof"
二、启动监控routine
go func() {
http.ListenAndServe("0.0.0.0:18080", nil)
}()
三、访问web服务
例:分析CPU占用情况
go tool pprof http://localhost:18080/debug/pprof/profile
(pprof) top10 Total: 2525 samples 298 11.8% 11.8% 345 13.7% runtime.mapaccess1_fast64 268 10.6% 22.4% 2124 84.1% main.FindLoops 251 9.9% 32.4% 451 17.9% scanblock 178 7.0% 39.4% 351 13.9% hash_insert 131 5.2% 44.6% 158 6.3% sweepspan 119 4.7% 49.3% 350 13.9% main.DFS 96 3.8% 53.1% 98 3.9% flushptrbuf 95 3.8% 56.9% 95 3.8% runtime.aeshash64 95 3.8% 60.6% 101 4.0% runtime.settype_flush 88 3.5% 64.1% 988 39.1% runtime.mallocgc
四、参考
// pprof 命令
https://blog.golang.org/profiling-go-programs
// web 上几项监控指标
https://golang.org/pkg/net/http/pprof/
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