Re: %u-order allocation failed

[Alex Bligh - linux-kernel <linux-kernel@xxxxxxxxxxx>]

--On Sunday, October 07, 2001 12:30 PM -0600 "Eric W. Biederman" 
<ebiederman@xxxxxxxxxx> wrote:
> > Note also that something (not sure what) has made fragmentation
> > increasingly prevalent over the years since the buddy allocator
> > was originally put in.
> Actually it seems to be situations like the stack now being two pages
Instrumentation posted here before appears to corellate fragmentation
being /caused/ with I/O activity (single bonnie process and thus a
single 8k stack frame). My own guess is that it is due to
a different persistence of various caches.

I haven't seen anyone before blaming stack frame allocation
as a /cause/ of fragmenation - I've heard people say they
notice fragmentation more as stack frame allocs start to
fail - but that's a symptom.

--
Alex Bligh