Re: AES-XTS performance

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> Loop is not ideal device to test but it is not the problem.

> The main problem is that dm-crypt uses only one core per device.

> If you want to do some tests, try this patch
> http://lkml.org/lkml/2010/11/12/344

> (but there is still some issues and it will not help much
> if only one process generates IOs.)

I've tried to apply this patch against 2.6.36 and 2.6.37-rc2
but without success:

# patch -p1 -i ./dm-crypt-patch.diff
patching file drivers/md/dm-crypt.c
Hunk #2 FAILED at 78.
Hunk #3 succeeded at 91 with fuzz 2.
Hunk #4 FAILED at 133.
Hunk #5 FAILED at 152.
Hunk #7 FAILED at 227.
Hunk #8 FAILED at 239.
Hunk #9 FAILED at 259.
Hunk #10 FAILED at 336.
Hunk #11 FAILED at 358.
Hunk #12 FAILED at 381.
Hunk #13 FAILED at 501.
Hunk #14 FAILED at 546.
Hunk #15 FAILED at 562.
Hunk #16 succeeded at 574 with fuzz 2.
Hunk #17 FAILED at 583.
Hunk #19 succeeded at 1065 with fuzz 1.
Hunk #20 FAILED at 1096.
Hunk #21 FAILED at 1136.
Hunk #22 FAILED at 1155.
Hunk #23 FAILED at 1174.
Hunk #24 FAILED at 1209.
Hunk #25 FAILED at 1240.
Hunk #26 FAILED at 1259.
Hunk #27 FAILED at 1323.
Hunk #28 FAILED at 1354.
Hunk #29 FAILED at 1365.
Hunk #30 FAILED at 1378.
Hunk #31 FAILED at 1405.
25 out of 31 hunks FAILED -- saving rejects to file drivers/md/dm-crypt.c.rej

What version of kernel should i patch? GIT?

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