Date: Fri, 26 Aug 2011 23:27:58 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: Kirk McKusick <mckusick@mckusick.com> Cc: fs@freebsd.org Subject: Re: Strange behaviour of UFS2+SU FS on FreeBSD 8-Stable: dreadful perofrmance for old data, excellent for new. Message-ID: <1963980291.20110826232758@serebryakov.spb.ru> In-Reply-To: <201108261833.p7QIXhlZ008671@chez.mckusick.com> References: <1164434239.20110826221217@serebryakov.spb.ru> <201108261833.p7QIXhlZ008671@chez.mckusick.com>
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Hello, Kirk. You wrote 26 =E0=E2=E3=F3=F1=F2=E0 2011 =E3., 22:33:43: > If your old disk was full for a long time and had a lot of activity, > the most recently created files are likely to have poor layout. > Copying them should give them an improved layout now that much > more space is available. Best is to copy one, then remove the=20 > original copy. Copy the next one and remove its old copy, etc. > Please let me know if this works, as if it does not, something > is wrong with growfs. Ok, I'll write script for this monotonous work :) I could even copy them one-by-one via other file system )copy out, delete, copy in). Will it be better or not? --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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