lkml.org 
[lkml]   [2010]   [Apr]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH]vmscan: handle underflow for get_scan_ratio
    On Fri, Apr 02, 2010 at 05:14:38PM +0800, KOSAKI Motohiro wrote:
    > > > > This patch makes a lot of sense than previous. however I think <1% anon ratio
    > > > > shouldn't happen anyway because file lru doesn't have reclaimable pages.
    > > > > <1% seems no good reclaim rate.
    > > >
    > > > Oops, the above mention is wrong. sorry. only 1 page is still too big.
    > > > because under streaming io workload, the number of scanning anon pages should
    > > > be zero. this is very strong requirement. if not, backup operation will makes
    > > > a lot of swapping out.
    > > Sounds there is no big impact for the workload which you mentioned with the patch.
    > > please see below descriptions.
    > > I updated the description of the patch as fengguang suggested.
    >
    > Umm.. sorry, no.
    >
    > "one fix but introduce another one bug" is not good deal. instead,
    > I'll revert the guilty commit at first as akpm mentioned.
    Even we revert the commit, the patch still has its benefit, as it increases
    calculation precision, right?

    Thanks,
    Shaohua


    \
     
     \ /
      Last update: 2010-04-02 11:27    [W:2.224 / U:0.080 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site