From: Christian Pernegger <pernegger@gmail.com>
To: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: unbelievably bad performance: 2.6.27.37 and raid6
Date: Mon, 2 Nov 2009 19:51:50 +0100 [thread overview]
Message-ID: <bb145bd20911021051u177bbd7di17dd0d5d57ccd950@mail.gmail.com> (raw)
In-Reply-To: <4AEEF29C.10309@tmr.com>
> It is really slow, recent kernels seem to be unsuitable for use as large
> file servers, as the performance is, as you described it, "unbelievably
> bad."
Is this raid6 specific? Because FWIW md performance has been fine (not
great, but fine) on my little raid5/10 file servers. As soon as I add
dm-crypt to the mix it all goes to hell, though.
Maybe it's a device-mapper thing? Is everybody affected using LVM?
C.
prev parent reply other threads:[~2009-11-02 18:51 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-31 15:55 unbelievably bad performance: 2.6.27.37 and raid6 Jon Nelson
2009-10-31 18:43 ` Thomas Fjellstrom
2009-11-01 19:37 ` Andrew Dunn
2009-11-01 19:41 ` Thomas Fjellstrom
2009-11-01 23:43 ` NeilBrown
2009-11-01 23:47 ` Thomas Fjellstrom
2009-11-01 23:53 ` Jon Nelson
2009-11-02 2:28 ` Neil Brown
2009-11-01 23:55 ` Andrew Dunn
2009-11-04 14:43 ` CoolCold
2009-10-31 19:59 ` Christian Pernegger
2009-11-02 19:39 ` Jon Nelson
2009-11-02 20:01 ` Christian Pernegger
2009-11-01 7:17 ` Kristleifur Daðason
2009-11-02 14:54 ` Bill Davidsen
2009-11-02 15:03 ` Jon Nelson
2009-11-03 5:36 ` NeilBrown
2009-11-03 6:09 ` Michael Evans
2009-11-03 6:28 ` NeilBrown
2009-11-03 6:39 ` Michael Evans
2009-11-03 6:46 ` Michael Evans
2009-11-03 9:16 ` NeilBrown
2009-11-03 13:07 ` Goswin von Brederlow
2009-11-03 16:28 ` Michael Evans
2009-11-03 19:26 ` Goswin von Brederlow
2009-11-02 18:51 ` Christian Pernegger [this message]
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