On 3/17/06, Leon Rosenberg <[EMAIL PROTECTED]> wrote: > > > > Have you tried it? ;) > > Yeah, and it didn't add any performance. However it helped to keep the > thread count low. But it was on 2.4.x kernel, where threads were an > issue, on 2.6.x its pointless (at least until you really has something > to cache :-) )
If you're using Squid instead of Apache it can really help as setting up Apache to handle lots of concurrent connections is not easy: With a standard config on Unix you end up with a httpd process per connection, with one of the less tested MPMs you still end up with a thread. With a typical Apache process consuming at least 4MB of memory, all of a sudden supporting 1000+ connections at the same time because not so trivial, not to mention the severe memory thrashing that occurs context switching between all those processes. It looks like Apache 2.2 supports using a separate thread for the sole task of keeping track of keep-alives, but you have to use the event MPM. http://httpd.apache.org/docs/2.2/mod/event.html I haven't tried Apache 2.2 yet, and I haven't had luck with any other MPM besides prefork, but then again, I haven't tried any other MPMs recently, either. -Dave -Dave --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
