Date: Mon, 12 Nov 2001 15:27:26 +0100 From: Daniel Lang <dl@leo.org> To: freebsd-stable@freebsd.org Subject: dirpref benefit on virtual disks Message-ID: <20011112152726.A10505@atrbg11.informatik.tu-muenchen.de>
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Hi, as I understood, the new dirpref algorithm can improve performance a lot, but only applies to new created directories. To be able to use it, old existing directories would have to be created new. Now I have some huge filesystems on RAID partitions. To recreate all their directories involves some hassle, but I would think about doing it. But since these are no real but virtual disks, spread over a set of disks in a hardware raidbox, I'm not sure, if I would even benefit from the better algorithm. It sounded a bit like designed for filesystems on a (single?) disk? Could anyone clearify this, please? Also I would like to know, if there is a certain limit of free space, on the disk, so that the algorithm can actually use the better layout? The disks have some space left, in an absolute way, but not that much from a relative point of view (like 12GB left which is just 6% minfree not taken into account). Thanks for your answers. Best regards, 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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