[Golang]如何检查内存泄漏(1)

[root@s3 twitter]# go tool pprof http://localhost:6060/debug/pprof/heap --text
Read http://localhost:6060/debug/pprof/symbol
Fetching /pprof/heap profile from localhost:6060 to
  /tmp/76z7mNTrzO
Wrote profile to /tmp/76z7mNTrzO
Adjusting heap profiles for 1-in-524288 sampling rate
Total: 47.5 MB
    24.5  51.6%  51.6%     24.5  51.6% reflect.unsafe_NewArray
    23.0  48.4% 100.0%     23.0  48.4% database/sql.convertAssign
     0.0   0.0% 100.0%     23.0  48.4% database/sql.(*Rows).Scan
     0.0   0.0% 100.0%     47.5 100.0% github.com/coopernurse/gorp.(*DbMap).Select
     0.0   0.0% 100.0%     47.5 100.0% github.com/coopernurse/gorp.hookedselect
     0.0   0.0% 100.0%     47.5 100.0% github.com/coopernurse/gorp.rawselect
     0.0   0.0% 100.0%     47.5 100.0% main.getTwitterNoParse
     0.0   0.0% 100.0%     27.5  57.9% main.main
     0.0   0.0% 100.0%     47.5 100.0% main.parseHtml
     0.0   0.0% 100.0%     24.5  51.6% reflect.Append
     0.0   0.0% 100.0%     24.5  51.6% reflect.MakeSlice
     0.0   0.0% 100.0%     24.5  51.6% reflect.grow
     0.0   0.0% 100.0%      1.4   2.9% runtime.MProf_Malloc
     0.0   0.0% 100.0%      1.4   2.9% runtime.callers
     0.0   0.0% 100.0%     25.1  52.8% runtime.gosched0

     0.0   0.0% 100.0%     26.8  56.4% runtime.main

[root@s3 twitter]# go tool pprof http://localhost:6060/debug/pprof/heap --text
Read http://localhost:6060/debug/pprof/symbol
Fetching /pprof/heap profile from localhost:6060 to
  /tmp/6rfif3xDyB
Wrote profile to /tmp/6rfif3xDyB
Adjusting heap profiles for 1-in-524288 sampling rate
Total: 57.1 MB
    30.1  52.7%  52.7%     30.1  52.7% reflect.unsafe_NewArray
    27.0  47.3% 100.0%     27.0  47.3% database/sql.convertAssign
     0.0   0.0% 100.0%     27.0  47.3% database/sql.(*Rows).Scan
     0.0   0.0% 100.0%     57.1 100.0% github.com/coopernurse/gorp.(*DbMap).Select
     0.0   0.0% 100.0%     57.1 100.0% github.com/coopernurse/gorp.hookedselect
     0.0   0.0% 100.0%     57.1 100.0% github.com/coopernurse/gorp.rawselect
     0.0   0.0% 100.0%     57.1 100.0% main.getTwitterNoParse
     0.0   0.0% 100.0%     27.5  48.2% main.main
     0.0   0.0% 100.0%     57.1 100.0% main.parseHtml
     0.0   0.0% 100.0%     30.1  52.7% reflect.Append
     0.0   0.0% 100.0%     30.1  52.7% reflect.MakeSlice
     0.0   0.0% 100.0%     30.1  52.7% reflect.grow
     0.0   0.0% 100.0%      1.4   2.5% runtime.MProf_Malloc
     0.0   0.0% 100.0%      1.4   2.5% runtime.callers
     0.0   0.0% 100.0%     25.1  44.0% runtime.gosched0
     0.0   0.0% 100.0%     26.8  46.9% runtime.main

内存占用在增加！

(pprof) top
Total: 94.1 MB
    49.6  52.7%  52.7%     49.6  52.7% reflect.unsafe_NewArray
    44.5  47.3% 100.0%     44.5  47.3% database/sql.convertAssign
     0.0   0.0% 100.0%     44.5  47.3% database/sql.(*Rows).Scan

生成svg，得安装graphviz ， 浏览器打开svg，图很清楚。

yum install graphviz -y