Re: [PATCH 0/3] Reduce impact to overall system of SLUB using high-order allocations

Pekka Enberg
2011-05-12T11:13:47Z

On 5/12/11 1:34 AM, James Bottomley wrote:
> On Wed, 2011-05-11 at 15:28 -0700, David Rientjes wrote:
>> On Wed, 11 May 2011, James Bottomley wrote:
>>
>>> OK, I confirm that I can't seem to break this one. No hangs visible,
>>> even when loading up the system with firefox, evolution, the usual
>>> massive untar, X and even a distribution upgrade.
>>>
>>> You can add my tested-by
>>>
>> Your system still hangs with patches 1 and 2 only?
> Yes, but only once in all the testing. With patches 1 and 2 the hang is
> much harder to reproduce, but it still seems to be present if I hit it
> hard enough.

Patches 1-2 look reasonable to me. I'm not completely convinced of patch
3, though. Why are we seeing these problems now? This has been in
mainline for a long time already. Shouldn't we fix kswapd?

Pekka