[kernel-xen] kernel-xen-3.11.0-1 in testing repo.

Steven Haigh netwiz at crc.id.au
Sat Sep 7 17:46:19 EST 2013

On 06/09/13 10:10, Steven Haigh wrote:
> On 05/09/13 21:22, Gordan Bobic wrote:
>> On Thu, 05 Sep 2013 21:14:49 +1000, Steven Haigh <netwiz at crc.id.au> wrote:
>>> On 05/09/13 20:54, Gordan Bobic wrote:
>>>> On Thu, 05 Sep 2013 15:37:31 +1000, Steven Haigh <netwiz at crc.id.au>
>>>> wrote:
>>>>> Hi all,
>>>>> I've built kernel 3.11.0 and placed it in the testing repo. Major
>>>>> changes include optimisations on both the network stack and disk
>>>>> subsystem.

For those curious, I'd been having a long standing issue where I
couldn't get more than ~50Mb/sec to an underlying RAID6 array.

Using this testing kernel on both the DomU and Dom0, then adding
xen-blkfront.max=128 to the kernel line of the DomU has managed to give
over 100Mb/sec of sustained writes to the same RAID6 - just about
doubling write speed to the array.

If anyone else comes across similar performance bottlenecks, I'd love to
hear if the above helps out...

Steven Haigh

Email: netwiz at crc.id.au
Web: https://www.crc.id.au
Phone: (03) 9001 6090 - 0412 935 897
Fax: (03) 8338 0299

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