Re: Debugging mod_proxy for performance

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On 4/8/07, Nilesh Bansal <nileshbansal@xxxxxxxxx> wrote:

We have a Apache httpd running with mod_proxy in front of a Tomcat
server. We have noticed that httpd is slower than expected. After
enabling logging of time-to-serve in both Tomcat and httpd, it turns
out that while Tomcat can serve each request in less than a second,
httpd in many cases takes 3-5 seconds (i.e., adding a delay of 3-4
seconds).

3-4 seconds? Looks like there's something terribly wrong with your
config, like resolve hostnames turned on in Apache config. mod_proxy
shouldn't add more than 200-300 microseconds for such small requests
on modern hardware.

--
Alexey Polyakov

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