lkml.org 
[lkml]   [2009]   [Dec]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/9] ksm: let shared pages be swappable
On Fri, Dec 04, 2009 at 09:16:40AM -0800, Chris Wright wrote:
> That's why I mentioned the page of zeroes as the prime example of
> something with a high mapcount that shouldn't really ever be evicted.

Just a nitpick, "never" is too much, it should remain evictable if
somebody halts all VM from monitor and starts a workloads that fills
RAM and runs for a very prolonged time pushing all VM into swap. This
is especially true if we stick to the below approach and it isn't
just 1 page in high-sharing.

> It's a somewhat special case, but wouldn't it be useful to have a generic
> method to recognize this kind of sharing since it's a generic issue?

Agreed.


\
 
 \ /
  Last update: 2009-12-04 19:55    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site