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From Greg Stein <gst...@lyra.org>
Subject Re: Add mod_gz to httpd-2.0 ( Thread restart )
Date Thu, 06 Sep 2001 03:48:28 GMT
On Wed, Sep 05, 2001 at 08:07:26PM -0700, Justin Erenkrantz wrote:
> On Wed, Sep 05, 2001 at 08:05:27PM -0700, Ian Holsman wrote:
> > Some performance results with mod_gz are available at
> > http://webperf.org/a2/v25/
> > (no core dumps.. pages look ok on a real browser while running test)
> > I'm going to be re-running the tests for a longer period to see if
> > there are memory leaks (as well as quantify/purify on it next week)
> > 
> > brief summary:
> > 	* numbers are based on pages going through mod-include
> > 	* once of the runs looks a bit flaky.. and I'm re-running it
> > 	* cpu usage (USR) is VERY high (from 100 without gz to 500)
> > 	* page requests down 16% when using GZ

What does this mean? Total bytes transferred? If so, then why only 16%

The number of page requests should be constant, unless mod_gz introduces
some kind of caching.

> > 	* page resposne times are slower with GZ, but have a lower deviation
> 
> The expectation is that the network bandwidth used should be much
> lower.  The tradeoff is that the CPU should get nailed.  -- justin

Also: latency should increase and delivery time should decrease.

cheers,
-g

-- 
Greg Stein, http://www.lyra.org/

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