Re: still getting allocation failures (was Re: [PATCH] vmscan: Stop kswapd waiting on congestion when the min watermark is not being met V2)

Tobias Oetiker
2009-12-14T05:59:11Z

Hi Corrado,

Dec 3 Corrado Zoccolo wrote:

> Hi Tobias,
> does the patch in http://lkml.org/lkml/2009/11/30/301 help with your
> high order allocation problems?
> It seems that you have lot of memory, but high order pages do not show up.
> The patch should make them more likely to appear.
> On my machine (that has much less ram than yours), with the patch, I
> always have order-10 pages available.

I have tried it and ... it does not work, the page allocation
failure still shows. BUT while testing it on two machines I found that it
only shows on on machine. The workload on the two machines is
similar (they both run virtualbox) and also the available memory.

Could it be caused by a hardware driver ?

cheers
tobi

--
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi@oetiker.ch ++41 62 775 9902 / sb: -9900