I don't know if I'd call a 4% difference a "dead heat"... I guess that would depend on how many of those files you are serving a day... If I had 25 servers all working full-throttle all day, 4% would be enough to require 1 more server. If my peak load exceeds the necessary threshold, 4% could mean I get end-users seeing errors periodically through the day - even with much smaller configurations.
Just something to think about... -- Robin D. Wilson Director of Web Development KingsIsle Entertainment, Inc. WORK: 512-623-5913 CELL: 512-426-3929 www.KingsIsle.com -----Original Message----- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Monday, May 18, 2009 3:25 PM To: Tomcat Users List Subject: Re: Apache httpd vs Tomcat static content performance [Revised/Updated] -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Robin, On 5/18/2009 4:11 PM, Robin Wilson wrote: > Thanks! This information isn't useless... Of course, more detailed > results, after a longer test run would be more conclusive. Yup, that's the plan. Tonight, I'll be running with an 8 minute test to give me 12 solid hours of testing. /Those/ should be more definitive results. I've also rigged my test to prime the server by hitting each file a single time, then waiting a few seconds, then starting the real test. > This appears to show that Apache is slightly faster (~4% or so) for > files over 16KiB than Tomcat APR, and materially faster (~44% or > more) than all other configurations of Tomcat (especially for larger > files). Tomcat+APR is so close to httpd as to be in a dead heat as far as I'm concerned. We'll know more once the larger-scale tests have been run. If you graph these numbers (or read very carefully), you can see that Coyote+APR outperforms httpd for two of the samples. Also, the APR connector without sendfile is basically the same as using the "simple" Coyote connector. I suspect the same is true of the NIO connector, though it uses a different strategy for reading and writing, obviously. Something is obviously amiss with sendfile-enabled NIO connector, though. Suggestions from those who know would be appreciated. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkoRxCEACgkQ9CaO5/Lv0PBw1QCgs4g8fZk4ESSC7dDpVEZoAnah HmQAoJk7FshdtZlboIG+niTRy0Lb5zRP =6B0w -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
