用pprof golang profile,如何获得命中数而不是持续时间？

Question

如何获得点击数:

(pprof) top
Total: 2525 samples
     298  11.8%  11.8%      345  13.7% runtime.mapaccess1_fast64
     268  10.6%  22.4%     2124  84.1% main.FindLoops

不,持续时间如:

(pprof) top
2220ms of 3080ms total (72.08%)
Dropped 72 nodes (cum <= 15.40ms)
Showing top 10 nodes out of 111 (cum >= 60ms)
      flat  flat%   sum%        cum   cum%
    1340ms 43.51% 43.51%     1410ms 45.78%  runtime.cgocall_errno

环境:我使用golang1.4,添加以下代码.

defer pprof.StopCPUProfile()
f, err := os.Create("innercpu.pprof")
if err != nil {
    fmt.Println("Error: ", err)
}
pprof.StartCPUProfile(f)

Answer 1

您可以使用go tool pprof -callgrind -output callgrind.out innercpu.pprof从收集的分析数据中生成callgrind数据.然后,您可以使用qcachegrind/kcachegrind进行可视化.它会显示通话计数.