http://bugzilla.kernel.org/show_bug.cgi?id=10378
Since I wasn't able to reproduce it on a server machine again, it was later closed.
If you think it is the same issue, please feel free to re-open it.
Ritesh
On Mon, Jun 2, 2008 at 6:01 PM, Yan Li <elliot.li.tech@xxxxxxxxx> wrote:
Hi Milan,
Will the result of testing a Debian 2.6.24-etchnhalf.1-amd64 kernel
On Mon, Jun 02, 2008 at 08:52:00AM +0200, Milan Broz wrote:
> Please could you try if patch here helps and doesn't cause performance degradation?
> http://www2.kernel.org/pub/linux/kernel/people/agk/patches/2.6/2.6.25/dm-crypt-add-cond_resched.patch
(very near a vanilla kernel) be of same value? Since the data on some
other drives on this server is important so I dare not try 2.6.25-rc
on it.
Following is my test plan, comments are welcomed:
Test command:
# dd if=/dev/zero of=/dev/mapper/open_device bs=500M count=10
(this server has 2G memory)
The command will be run for 3 times, and average speed of last two
runs will be taken as result score.
Dm-crypt LUKS Encryption scenarios:
aes-cbc-essiv:sha256, keysize 128
aes-xts-plain, keysize 256
aes-xts-plain, keysize 512
I will compare the speed of all above 3 encryption scenarios, with and
without the patch.
--
Li, Yan
--
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."
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