Date: Tue, 13 Nov 2001 12:18:37 +0100 From: Daniel Lang <dl@leo.org> To: Bill Moran <wmoran@potentialtech.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: dirpref benefit on virtual disks Message-ID: <20011113121837.A34946@atrbg11.informatik.tu-muenchen.de> In-Reply-To: <3BF013B8.8070009@potentialtech.com>; from wmoran@potentialtech.com on Mon, Nov 12, 2001 at 01:23:52PM -0500 References: <20011112152726.A10505@atrbg11.informatik.tu-muenchen.de> <3BF013B8.8070009@potentialtech.com>
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Hi, Bill Moran wrote on Mon, Nov 12, 2001 at 01:23:52PM -0500: [..] > That being said, I don't _know_. It would be interesting to test > it. Since you're already considering recreating directories, why > not do a test to see if it's worth it? Just take a directory tree [..] I just did it. I've copied the FreeBSD mirror (which should be complicated enough) onto a free partition, and then ran a find on the original location and then on the new one. The find command was: find . -print > /dev/null the result seemed convincing old dirpref: 2.97s user 67.45s system 6% cpu 17:36.22 total new dirpref: 2.09s user 5.94s system 5% cpu 2:39.32 total But I cannot rule our side-effects. The system is not quiet, and the array with the old code is much more busy than the spare one, which is not busy at all. Anyway, I will recreate the tree on the busy array und do the test again. Thanks so far, Daniel -- IRCnet: Mr-Spock - Burn them to ashes, then burn the ashes. - *Daniel Lang * dl@leo.org * +49 89 289 25735 * http://www.leo.org/~dl/* To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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