分析超时的Perl CGI脚本 [英] Profiling a Perl CGI script that times-out

问题描述

我有一个Perl CGI应用程序，有时会超时，导致它被Apache杀死，并且504 Gateway Time-out错误被发送到浏览器.我正在尝试使用NYTProf对此应用程序进行配置文件，但是我无法读取配置文件数据:

I have a Perl CGI application that sometimes times out, causing it to be killed by Apache and 504 Gateway Time-out error to be sent to browser. I am trying to profile this application using NYTProf, however I cannot read profile data:

 $ nytprofhtml -f www/cgi-local/nytprof.out
Reading www/cgi-local/nytprof.out
Profile data incomplete, inflate error -5 ((null)) at end of input file, perhaps the process didn't exit cleanly or the file has been truncated  (refer to TROUBLESHOOTING in the documentation)

我正在使用sigexit=1 NYTProf选项.这是重现问题的最小CGI脚本:

I am using sigexit=1 NYTProf option. Here's minimal CGI script that reproduces problem:

#!/usr/bin/perl -d:NYTProf

sleep 1 while 1;

推荐答案

设置sigexit=1告诉NYTProf捕获以下信号:

Setting sigexit=1 tells NYTProf to catch the following signals:

INT HUP PIPE BUS SEGV

但是，当您的CGI脚本超时时，Apache发送SIGTERM.您需要赶上SIGTERM:

However, when your CGI script times out, Apache sends SIGTERM. You need to catch SIGTERM:

sigexit=term

要捕获除默认信号以外的SIGTERM，请使用:

To catch SIGTERM in addition to the default signals, use:

sigexit=int,hup,pipe,bus,segv,term

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