lkml.org 
[lkml]   [2007]   [Oct]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: [15/17] SLUB: Support virtual fallback via SLAB_VFALLBACK
    Date
    On Tuesday 02 October 2007 07:01, Christoph Lameter wrote:
    > On Sat, 29 Sep 2007, Peter Zijlstra wrote:
    > > On Fri, 2007-09-28 at 11:20 -0700, Christoph Lameter wrote:
    > > > Really? That means we can no longer even allocate stacks for forking.
    > >
    > > I think I'm running with 4k stacks...
    >
    > 4k stacks will never fly on an SGI x86_64 NUMA configuration given the
    > additional data that may be kept on the stack. We are currently
    > considering to go from 8k to 16k (or even 32k) to make things work. So
    > having the ability to put the stacks in vmalloc space may be something to
    > look at.

    i386 and x86-64 already used 8K stacks for years and they have never
    really been much problem before.

    They only started failing when contiguous memory is getting used up
    by other things, _even with_ those anti-frag patches in there.

    Bottom line is that you do not use higher order allocations when you do
    not need them.
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2007-10-03 03:11    [W:2.367 / U:0.000 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site