lkml.org 
[lkml]   [2011]   [Dec]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 0/4] memcg: simplify LRU handling.
    On Wed, Dec 14, 2011 at 04:47:34PM +0900, KAMEZAWA Hiroyuki wrote:
    >
    > This series is onto linux-next +
    > memcg-add-mem_cgroup_replace_page_cache-to-fix-lru-issue.patch
    >
    > The 1st purpose of this patch is reduce overheads of mem_cgroup_add/del_lru.
    > They uses some atomic ops.

    Which is noticable.

    With a simple sparse file cat, mem_cgroup_lru_add_list() went from

    1.12% cat [kernel.kallsyms] [k] mem_cgroup_lru_add_list

    to

    0.31% cat [kernel.kallsyms] [k] mem_cgroup_lru_add_list

    and real time went down, too:

    5 runs min median max in seconds
    vanilla: 7.762 7.782 7.816
    patched: 7.622 7.631 7.660


    \
     
     \ /
      Last update: 2011-12-19 16:59    [W:0.019 / U:29.500 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site