Date: Fri, 15 May 2009 13:29:28 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-performance@freebsd.org Subject: Re: filesystem: 12h to delete 32GB of data Message-ID: <gujjmo$jfa$1@ger.gmane.org> In-Reply-To: <1241622146.16418.128.camel@ompc.insign.local> References: <1241610888.16418.64.camel@ompc.insign.local> <20090506084834.61600c42.wmoran@potentialtech.com> <20090506161543.062ba223@hal9000.mebius.lv> <1241622146.16418.128.camel@ompc.insign.local>
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[-- Attachment #1 --] Olivier Mueller wrote: > On Wed, 2009-05-06 at 16:15 +0300, Arkadi Shishlov wrote: >> Its probably "dirhash' that is not enabled or its cache is too small for the task. > > $ sysctl -a |grep dirha > UFS dirhash 1262 286K - 9715683 16,32,64,128,256,512,1024,2048,4096 > vfs.ufs.dirhash_docheck: 0 > vfs.ufs.dirhash_mem: 2087495 > vfs.ufs.dirhash_maxmem: 2097152 > vfs.ufs.dirhash_minsize: 2560 > > So it's active, but probably too small as you suggest. Can I update this > value "on the fly" or does it require a reboot (+ settings in > loader.conf) ? It's a regular sysctl - you can update it on runtime. Try setting it to 8 M and only increase if it needs to be increased. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkoNUhgACgkQldnAQVacBciEEwCg1GfmEdIXJgpsUNJbJvy8IMUe IYgAoMiro5F7Xq4XUdLC97KZvOkGkQ87 =5oyD -----END PGP SIGNATURE-----
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