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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.

      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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