Re: __alloc_pages: 2-order allocation failed
This doesn't sound useful for servers. :) Is this an issue with Linux
in general, or only with certain ports?
Is there a patch, or something else I can do to keep this from
happening again?
As far as uptime goes...
17:58:45 up 78 days, 5:08, 18 users, load average: 0.28, 0.27, 0.23
On Tue, Mar 29, 2005 at 12:07:04PM -0800, David S. Miller said:
> On Tue, 29 Mar 2005 13:43:10 -0500
> Mike Edwards <sauron-debian-sparc@psychology.rutgers.edu> wrote:
>
> > The odd thing is, psychology shouldn't be running out of memory - this
> > beast has 4 GB.
>
> It's not running out of memory so much as memory is too fragmented
> to produce a 2-order allocation successfully.
>
> The kernel uses the buddy-system algorithm to allocate free pages,
> this means when a 2-order allocation is requested the kernel has to
> find 4 consequetive and aligned pages in the free page pool. Sometimes
> after lots of uptime, this is difficult if not impossible to achieve.
--
Mike Edwards <sauron-debian-sparc@psychology.rutgers.edu>
System Administrator
Psychology Department, Rutgers University, Newark campus
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