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Date: Tue, 24 Apr 2007 16:04:10 +0200 From: Valerie Clement <valerie.clement@...l.net> To: Alex Tomas <alex@...sterfs.com> Cc: Avantika Mathur <mathur@...ux.vnet.ibm.com>, linux-ext4@...r.kernel.org, Mingming Cao <cmm@...ibm.com> Subject: Re: Ext4 devel interlock meeting minutes (April 23, 2007) Alex Tomas wrote: >> - Large file deletion >> - Valerie had recently tested large file deletion on ext3/4, but >> did not see the expected performance gain with ext4 due to compact >> metadata when using extents. > > any details? > Ok, I found my mistake. There was a typo in my test script and the pagecache was not flushed between the file creation and the deletion. Here are the results I obtain with a 2.6.17-rc7 kernel to delete a 100GB file: ext3 : real 2m35.048s user 0m0.000s sys 0m6.424s ext4 : real 0m11.160s user 0m0.000s sys 0m5.532s xfs : real 0m0.377s user 0m0.004s sys 0m0.004s The performance gain with ext4 is much larger when running a good test... Sorry the wrong information, Valérie - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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