golang工具pprof无法正常工作 - 不管分析目标如何，输出相同 [英] golang tool pprof not working properly - same broken output regardless of profiling target

问题描述

我之前使用pprof工具没有问题，它工作得很好 - 现在我看到输出如下，无论我的个人资料：

$ b 在这个例子中被分析的应用程序可能会产生40多个函数调用，甚至更复杂的应用程序也会为cpu和memprofiling产生类似的调用图。 / p>

试图配置文件的应用程序都是Web应用程序，我一次性对它们进行一分钟分析，并使用wrk生成200,000,000+个请求=全部返回数据和2xx响应

pprof几天前突然停止运行osx yosemite - 试图解决我最近升级到el capitan的问题，但结果是一样的。

注意：这不仅仅是调用图表 - 调用列表或顶级命令会产生类似的贫瘠结果，但应用程序（pprof）top
269.97kB共269.97kB（100％）$ b $（$）$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ b flat flat％％％cum％％
269.97kB 100％100％269.97kB 100％b $ b（pprof）

我正在使用以下软件包：github.com/davecheney/profilewith go v1.5.1

为了清楚起见，下面是我正在做生成配置文件::

我将上面的包导入到main.go中，并将以下内容放置在主func的顶部：

 推迟profile.Start（profile.MemProfile）.Stop（）
  

然后构建二进制文件并运行它：

  go build -o orig /Users/danielwall/www/netlistener/application/adrequest.go /Users/danielwall/www/netlistener/application/cookie.go /Users/danielwall/www/netlistener/application/header.go/ Users / danielwall / www / netlistener /application/lex.go /Users/danielwall/www/netlistener/application/main.go / User s / danielwall / www / netlistener / application / publisher_ids.go /Users/danielwall/www/netlistener/application/request.go/Users/danielwall/www/netlistener/application/response.go / Users / danielwall / www / netlistener / application / server.go /Users/danielwall/www/netlistener/application/sniff.go/Users/danielwall/www/netlistener/application/status.go/Users/danielwall/www/netlistener/application/transfer.go 
 
 ./orig 
  

然后我看到如下输出：

  2015/11/16 11:39:49 profile：启用内存分析，/var/folders/26/2sj70_sn72l_93j7tf6r07gr0000gn/T/profile614358295/mem.pprof 
  

现在我从另一个终端开始工作：

  wrk -d60 -c10 -HX-Device：desktop-HX-Country-Code：GBhttp：// localhost：8189 / app？id = 111& schema = xml2& ad_type = auto& url = http：//test.com/& category = bob
运行1m测试@ http：// localhost：8189 / app？id = 111& schema = XML2&安培; AD_TYPE = auto& url = http：//test.com/& category = bob 
 2个线程和10个连接
线程统计平均Stdev最大+/- Stdev 
延迟414.09us 0.92ms 55.36ms 95.66％
需求/秒17.57k 3.19k 22.59k 76.00％
 2097764请求在1.00m，684.20MB read 
请求/秒：34958.03 
转移/秒：11.40MB 
  

60秒后，我回去查看个人资料：

  ^ C2015 / 11/16 12:05:20 profile：捕获中断，停止配置文件
 
 go工具pprof / var / folders / 26 / 2sj70_sn72l_93j7tf6r07gr0000gn / T / profile614358295 / mem.pprof 
  

任何想法可能发生在这里或我可以开始的位置有疑难解答/解决这个问题？

欢迎提供任何帮助建议。

解决方案

<您的 go工具pprof 调用缺少二进制文件本身。将它称为

  go tool pprof ./orig /path/to/profile.pprof 
  

I've previously used the pprof tool without issue and it worked great - now I see output like the following no matter what I profile:

the application being profiled in this example probably makes 40+ function calls and even more complex apps are producing similar callgraphs for both cpu and memprofiling.

The apps Im trying to profile are all web applications, I am profiling them for one minute at a time and using wrk to generate 200,000,000+ requests = all returning data and a 2xx response

pprof suddenly stopped working a few days ago running osx yosemite - in an attempt to resolve the issue I recently upgraded to el capitan but result is the same.

Note: this is not just call graphs - calling list or top command produce similarly barren results but the apps themselves work fine:

    (pprof) top
269.97kB of 269.97kB total (  100%)
      flat  flat%   sum%        cum   cum%
  269.97kB   100%   100%   269.97kB   100%  
(pprof) 

I am using the following package: "github.com/davecheney/profile" with go v1.5.1

For clarity, here's what I'm doing to generate the profiles::

I import the above package into main.go and place the following at the top of my main func:

defer profile.Start(profile.MemProfile).Stop()

I then build the binary and run it:

go build -o orig /Users/danielwall/www/netlistener/application/adrequest.go /Users/danielwall/www/netlistener/application/cookie.go /Users/danielwall/www/netlistener/application/header.go /Users/danielwall/www/netlistener/application/lex.go /Users/danielwall/www/netlistener/application/main.go /Users/danielwall/www/netlistener/application/publisher_ids.go /Users/danielwall/www/netlistener/application/request.go /Users/danielwall/www/netlistener/application/response.go /Users/danielwall/www/netlistener/application/server.go /Users/danielwall/www/netlistener/application/sniff.go /Users/danielwall/www/netlistener/application/status.go /Users/danielwall/www/netlistener/application/transfer.go

./orig

I then see output like this:

2015/11/16 11:39:49 profile: memory profiling enabled, /var/folders/26/2sj70_sn72l_93j7tf6r07gr0000gn/T/profile614358295/mem.pprof

Now I work the app from another terminal :

    wrk -d60 -c10 -H "X-Device: desktop" -H "X-Country-Code: GB" "http://localhost:8189/app?id=111&schema=xml2&ad_type=auto&url=http://test.com/&category=bob"
Running 1m test @ http://localhost:8189/app?id=111&schema=xml2&ad_type=auto&url=http://test.com/&category=bob
  2 threads and 10 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency   414.09us    0.92ms  55.36ms   95.66%
    Req/Sec    17.57k     3.19k   22.59k    76.00%
  2097764 requests in 1.00m, 684.20MB read
Requests/sec:  34958.03
Transfer/sec:     11.40MB

After 60 seconds, I go back to check my profile:

^C2015/11/16 12:05:20 profile: caught interrupt, stopping profiles

go tool pprof /var/folders/26/2sj70_sn72l_93j7tf6r07gr0000gn/T/profile614358295/mem.pprof

Any ideas what might be happening here or where I could start with trouble shooting/solving this?

Any help suggestions welcome.

解决方案

Your go tool pprof call is missing the binary itself. Call it as

go tool pprof ./orig /path/to/profile.pprof

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