wow! I need to check this tonight!<br>It's funny, I thought disk frag was not an issue with linux! guess I was wrong ...<br>Seriously, are these figures reasonable ? I mean, can one trust what xfs_db spits out ? I never considered checking disk frag on any of my linux boxes, and I've had them for quite a while. Are disks formatted with ext3 showing the same fragmentation factor ? And does one know the growth rate of this factor ? (what are the relevant variables : disk size ? technology ? file system ?) <br><br>J.<br><br><b><i>Ben Lancaster <lists@benlancaster.co.uk></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> <br>On 3 Apr 2007, at 22:30, Robert wrote:<br><br>> Michael MacLeod wrote:<br>>><br>>> root@sixball:~# xfs_db -r /dev/mythtv/mythmedia<br>>> xfs_db> frag<br>>> actual 3904, ideal 3191, fragmentation factor 18.26%<br>>> xfs_db>
quit<br>>><br>>> I just thought I'd share this with the list, and ask if anyone <br>>> else has<br>>> encountered significant performance loss due to disk <br>>> fragmentation? How<br>>> fragmented are your drives?<br>><br>> mythbox ~ # xfs_db -r /dev/mapper/vg-mythtv<br>> xfs_db> frag<br>> actual 60667, ideal 67, fragmentation factor 99.89%<br>> xfs_db><br>><br>><br>> Hmm, that looks pretty bad.<br>><br>> Robert.<br><br># /usr/local/bin/xfs_db -r -c frag /dev/sda6<br>actual 940233, ideal 585, fragmentation factor 99.94%<br><br>I'd say that's worse!<br><br>FWIW, looks like xfs_db that ships with xfsprogs.x86_64 (2.7.3-1.2.1) <br>is b0rked - mine segfaults. Fix: download source packages for <br>xfsprogs and xfsdump from http://oss.sgi.com/projects/xfs/ <br>download.html and configure/make/make install<br>_______________________________________________<br>mythtv-users mailing
list<br>mythtv-users@mythtv.org<br>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users<br></blockquote><br><p> 
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