[lkml]   [2007]   [Apr]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 1/4] x86_64: Switch to SPARSE_VIRTUAL
    Andi Kleen wrote:
    > On Monday 02 April 2007 23:56:08 Dave Hansen wrote:
    >> On Mon, 2007-04-02 at 14:28 -0700, Christoph Lameter wrote:
    >>> I do not care what its called as long as it
    >>> covers all the bases and is not a glaring performance regresssion (like
    >>> SPARSEMEM so far).
    >> I honestly don't doubt that there are regressions, somewhere. Could you
    >> elaborate, and perhaps actually show us some numbers on this? Perhaps
    >> instead of adding a completely new model, we can adapt the existing ones
    >> somehow.
    > If it works I would be inclined to replaced old sparsemem with Christoph's
    > new one on x86-64. Perhaps that could cut down the bewildering sparsemem
    > ifdef jungle that is there currently.
    > But I presume it won't work on 32bit because of the limited address space?

    Right. But we might be able to do switch SPARSEMEM_EXTREME users here
    if performance is better and no other regressions are detected.

    There seems to be a theme, we need to get some numbers. I will try and
    get what I can with the hardware I have and see whats missing.

    >> But, without some cold, hard, data, we mere mortals without the 1024-way
    >> machines can only guess. ;)

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2007-04-05 14:11    [W:0.022 / U:1.700 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site