From: sminded <daniel.zetterman@gmail.com>
To: linux-raid@vger.kernel.org
Subject: Faster read performance DURING (?) resync on raid10
Date: Thu, 25 Sep 2008 02:27:51 -0700 (PDT) [thread overview]
Message-ID: <19666016.post@talk.nabble.com> (raw)
I have done some automated scripted tests with bonnie++ over RAID10 and
encryption, using different encryption cipher modes to evaluate the impact
on I/O operations.
The strange thing is that I can see a significant increase in read
performance (about 20%) when running the tests DURING the raid resync phase
directly after the raid creation as appose to running it after the resync,
or after I create the array with --assume-clean (which skips initial
resync).
Have anyone noticed the same behaviour, and how can it be explained? Any
ideas?
Can someone else verify that they get the same result?
--
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next reply other threads:[~2008-09-25 9:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-25 9:27 sminded [this message]
2008-09-25 18:40 ` Faster read performance DURING (?) resync on raid10 Keld J�rn Simonsen
2008-09-26 4:18 ` Neil Brown
2008-09-26 23:19 ` Daniel Zetterman
2008-09-28 2:23 ` Keld J�rn Simonsen
2008-09-28 10:45 ` Daniel Zetterman
2008-09-28 11:06 ` Daniel Zetterman
2008-09-28 17:35 ` Keld Jørn Simonsen
2008-09-26 8:03 ` John Robinson
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