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From Matt <>
Subject Re: [users@httpd] Slow (Delayed) CGI request
Date Sat, 20 Sep 2008 15:35:33 GMT
On Sat, Sep 20, 2008 at 4:33 PM, Matt <> wrote:

> On Sat, Sep 20, 2008 at 3:33 PM, John McGowan <> wrote:
>> I've got several apache servers that have been running for quite some
>> time.  We don't normally use CGI in production, but I have a reason to use
>> it now.  So, I've placed the CGI program, setup the config, and the CGI
>> works.  However, every request to *any* of the executable CGI programs that
>> I have all have about a 10s delay before executing.  Seems to be some sort
>> of network timeout or bad DNS going on in the background, but I just can't
>> find anything wrong with the config.
>> It's not a matter of the scripts themselves being slow... a simple
>> helloworld perl script takes the same 10s as the captcha image generator
>> that need to get working.
>> What's strange is that I have this problem across all of my servers...
>> some are FC3, 4, some are CentOS 5, Some are apache 2, and some are apache
>> 2.2
>> The only thing i could think of was Host Name Lookups, or some misspelling
>> in "Allow from all"  I've cleared those.  In fact, I sent my conf files to a
>> friend, and he got them up and running on his server, and didn't have the
>> same problem.
>> Can anybody think of some reason why this 10s delay would occur when
>> hitting these simple CGI scripts?  I'm pretty sure the delay is outside of
>> apache, due to the varied configurations it's happening on, but I'm stuck.
>> --
>> John
> What an ace problem. I dont know the answer, but here are some questions.
> Have you used telnet over ssh while logged on locally on each servers to
> make sure its not with something common to the setups, which would mean that
> even locally it would take 10seconds. Im assuming a GET verb is used. Was
> your hello world perl script just that, or did it have a db connection are
> have part of the captcha generator code in common.
> Do you use perl elsewhere on the servers other than the cgi-bin with no
> issues. how big is your path? Have you tcpdumped the request, Im assuming
> TTFB is the problem, that would tell you what the server was doing. Are
> using a proxy, or a firewall to hide these servers?

oh yeah and how did you clear the host name lookups as an issue? again
tcpdump would tell you.

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