Re: [Bug #32982] Kernel locks up a few minutes after boot

Jens Axboe
2011-04-18T18:28:54Z

On 2011-04-18 20:21, Bart Van Assche wrote:
> On Mon, Apr 18, 2011 at 1:44 PM, Jens Axboe <jaxboe-5c4llco8/ftWk0Htik3J/w@public.gmane.org> wrote:
>> Bart, can you try and pull:
>>
>> git://git.kernel.dk/linux-2.6-block.git for-linus
>>
>> into Linus' tree and see if that works? This has, among other things,
>> Neils fixes for MD.
>
> md seems to work stable with the resulting tree, but it looks there is

OK, that's the most important bit.

> a performance regression in the block layer not related to the md
> issue. If I run a small block IOPS test on a block device created by
> ib_srp (NOOP scheduler) I see about 11% less IOPS than with 2.6.38.3
> (155.000 IOPS with 2.6.38.3 and 140.000 IOPS with 2.6.39-rc3+).

That's not good. What's the test case?

--
Jens Axboe