lkml.org 
[lkml]   [2009]   [Jul]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] switch free memory back to MIGRATE_MOVABLE
    On Mon, 13 Jul 2009 11:47:46 +0900 (JST)
    KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:

    > > When page is back to buddy and its order is bigger than pageblock_order, we can
    > > switch its type to MIGRATE_MOVABLE. This can reduce fragmentation. The patch
    > > has obvious effect when read a block device and then drop caches.
    > >
    > > Signed-off-by: Shaohua Li <shaohua.li@intel.com>
    >
    > This patch change hot path, but there is no performance mesurement description.
    > Also, I don't like modification buddy core for only drop caches.
    >
    Li, does this patch imply fallback of migration type doesn't work well ?
    What is the bad case ?

    -Kame



    \
     
     \ /
      Last update: 2009-07-13 05:03    [W:0.020 / U:31.076 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site