Date: Mon, 24 Sep 2001 07:13:48 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Julian Elischer <julian@elischer.org> Cc: Matt Dillon <dillon@earth.backplane.com>, David Greenman <dg@root.com>, Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp>, bright@wintelcom.net, hackers@FreeBSD.ORG Subject: Re: Conclusions on... was Re: More on the cache_purgeleafdirs() routine Message-ID: <7140.1001308428@critter> In-Reply-To: Your message of "Sun, 23 Sep 2001 14:22:11 PDT." <3BAE5283.C7B434CF@elischer.org>
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In message <3BAE5283.C7B434CF@elischer.org>, Julian Elischer writes: >Matt Dillon wrote: >> >> :Block input operations is the one notable exception and it tells a >> :very interesting story: Matts patch results in a 4% increase, but >> :combined with vmdirioenable it results in a 21.5% decrease. >> : >> :That's pretty darn significant: one out of every five I/O have >> :been saved. > >Notice that both the user and system times increased.. Not significantly. As I already said: they are inside the standard deviation and therefore concluding anything from them is bogus. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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