lkml.org 
[lkml]   [2005]   [Dec]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 6/9] clockpro-clockpro.patch
On Fri, Dec 30, 2005 at 11:43:34PM +0100, Peter Zijlstra wrote:
>
> From: Peter Zijlstra <a.p.zijlstra@chello.nl>

Peter,

I tried your "scan-shared.c" proggy which loops over 140M of a file
using mmap (on a 128MB box). The number of loops was configured to "5".

The amount of major/minor pagefaults was exactly the same between
vanilla and clockpro, isnt the clockpro algorithm supposed to be
superior than LRU in such "sequential scan of MEMSIZE+1" cases?

Oh well, to be sincere, I still haven't understood what makes CLOCK-Pro
use inter reference distance instead of recency, given that its a simple
CLOCK using reference bits (but with three clocks instead of one).

But thats probably just my ignorance, need to study more.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-01-01 04:01    [W:0.148 / U:36.704 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site