Date: Tue, 22 Apr 2008 13:37:10 -0600 From: Scott Long <scottl@samsco.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: freebsd-current@freebsd.org, Jille <jille@quis.cx> Subject: Re: Http Accept filters (accf_http) Message-ID: <480E3E66.3000303@samsco.org> In-Reply-To: <8481.1208889581@critter.freebsd.dk> References: <8481.1208889581@critter.freebsd.dk>
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Poul-Henning Kamp wrote: > In message <480E307B.901@quis.cx>, Jille writes: >> Hello, >> >> I've read about accf_http(9) some time ago, and I was wondering about >> it's performance. >> Does it increase performance on all workloads ? >> (I'm intrested in the improvements for a PHP-apache-webserver with about >> 50 request/second average.) > > I doubt you will see measurable performance difference from using > request filters at such low traffic. > The accept filters do reduce service latency and probably have a small benefit in CPU utilization. 50 requests/sec is probably enough to see a benefit for something like PHP or PERL. It definitely won't hurt, and even if there's no measurable benefit now, it'll help prepare you for scaling in the future. Scott
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