lkml.org 
[lkml]   [2002]   [Oct]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2.5.43-mm2] New shared page table patch
>> For reference, one of the tests was TPC-H.  My code reduced the number of
>> allocated pte_chains from 5 million to 50 thousand.
>
> Don't tease, what did that do for performance? I see that someone has
> already posted a possible problem, and the code would pass for complex for
> most people, so is the gain worth the pain?

In many cases, this will stop the box from falling over flat on it's
face due to ZONE_NORMAL exhaustion (from pte-chains), or even total
RAM exhaustion (from PTEs). Thus the performance gain is infinite ;-)

M.

-
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: 2005-03-22 13:30    [from the cache]
©2003-2011 Jasper Spaans