Date: Sun, 17 Feb 2002 23:11:55 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Bruce Evans <bde@zeta.org.au>, Poul-Henning Kamp <phk@critter.freebsd.dk>, Julian Elischer <julian@elischer.org>, Alfred Perlstein <bright@mu.org>, arch@FreeBSD.ORG, jhb@FreeBSD.ORG, peter@wemm.org, jake@locore.ca Subject: Re: gettimeofday() and crhold()/crfree() (was Re: gettimeofday()andcopyout().Is copyout() MPSAFE on non-i386 archs? ) Message-ID: <3C70A93B.8E1D24E8@mindspring.com> References: <20020218144148.F4583-100000@gamplex.bde.org> <200202180409.g1I49vj10455@apollo.backplane.com>
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Matthew Dillon wrote: > Just a note: The gettimeofday() has an overhead of only 2-3 uS in > -current. Squid would have to be doing an aweful lot of transactions > for it to matter and even if it did, if that actually turned out to be the > bottleneck I'll eat my hat. And if I wind up eating my hat the next > thing I'll do is spend the necessary 5 seconds writing a little code > to make squid only call gettimeofday every 5th time. It was a lot of transactions... 22,000 HTTP 1.1 requests per second. Obviously, it wasn't squid code (8-)), but the logging requirement was the same because of the preexisiting squid log digest software, and the statistics gathering necessary to be comparable with competing products. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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