lkml.org 
[lkml]   [2008]   [Jan]   [15]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC] mmaped copy too slow?
FromPeter Zijlstra <>
DateTue, 15 Jan 2008 09:57:58 +0100
On Tue, 2008-01-15 at 12:20 +0900, KOSAKI Motohiro wrote:
> Hi Rik
> 
> > While being able to deal with used-once mappings in page reclaim
> > could be a good idea, this would require us to be able to determine
> > the difference between a page that was accessed once since it was
> > faulted in and a page that got accessed several times.
> 
> it makes sense that read ahead hit assume used-once mapping, may be.
> I will try it.

I once had a patch that made read-ahead give feedback into page reclaim,
but people didn't like it.



\
 
 \ /
  Last update: 2008-01-15 10:01    [from the cache]
©2003-2008