Date: Fri, 28 Jun 2002 12:34:24 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: FreeBSD current users <current@FreeBSD.ORG> Subject: Re: something funny with soft updates? Message-ID: <Pine.BSF.4.21.0206281233500.75410-100000@InterJet.elischer.org> In-Reply-To: <200206281828.g5SIS6xI006284@apollo.backplane.com>
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maybe, but whan I first committed soft updates, I got between 10 and 15 % improvements in times.. On Fri, 28 Jun 2002, Matthew Dillon wrote: > > :1389.803u 594.961s 35:59.14 91.9% 2697+2248k 11839+66940io 3701pf+0w > : > :It's interesting that despite the the extra writes (63640 of them) > :it took almost the same time from all metrics. > : > :this is a 35 minute subsection of buildworld.. > : > :i.e. buildworld up to a particular point, > : > :there may not be anything wrong but I expected more improvement. > :I remember that when I first committed softupdates it made a noticable > :difference.... > > Julian, please note that a buildworld does *NOT* seriously exercise > the filesystem. I/O ops are mostly reads. The only area where > softupdates might have a major effect would be the rm -rf of the > object tree at the beginning. > > -Matt > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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