From: Yakov Hrebtov <hrebtov@gmail.com>
To: device-mapper development <dm-devel@redhat.com>
Cc: michaelzugelder@googlemail.com
Subject: Re: PROBLEM: SSD access time with dm-crypt is way too high
Date: Tue, 11 Jan 2011 17:07:01 +0500 [thread overview]
Message-ID: <4D2C47E5.8020701@gmail.com> (raw)
In-Reply-To: <1294580107.2076.89.camel@vpcz1maverick>
09.01.2011 18:35, Michael Zugelder wrote:
> from kernel 2.6.33 on (at least up to 2.6.37) the access time when using
> dm-crypt on SSD is way too high. I would expect it to be a bit worse
> than directly accessing the device (~0.2ms here), but currently it's at
> exactly 10ms (except a few outlines). This corresponds to CONFIG_HZ=100.
I have similar problems, but 2.6.32 is also affected for me.
Look details here: https://bugzilla.kernel.org/show_bug.cgi?id=17892
prev parent reply other threads:[~2011-01-11 12:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-09 13:35 PROBLEM: SSD access time with dm-crypt is way too high Michael Zugelder
2011-01-09 14:05 ` [dm-devel] " Milan Broz
2011-01-10 17:19 ` [PATCH] " Mikulas Patocka
2011-01-10 17:50 ` Milan Broz
2011-01-10 18:47 ` [dm-devel] " Christoph Hellwig
2011-01-10 20:06 ` Michael Zugelder
2011-01-11 12:07 ` Yakov Hrebtov [this message]
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