Date: Fri, 26 Aug 2011 11:33:43 -0700 From: Kirk McKusick <mckusick@mckusick.com> To: lev@freebsd.org 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: <201108261833.p7QIXhlZ008671@chez.mckusick.com> In-Reply-To: <1164434239.20110826221217@serebryakov.spb.ru>
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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 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. Kirk McKusick
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