lkml.org 
[lkml]   [2002]   [Sep]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: 2.5.36-mm1 dbench 512 profiles
On Fri, Sep 20, 2002 at 11:10:20PM +0530, Dipankar Sarma wrote:
> >
> > In any case, we all know often acquired global locks are a bad idea on
> > a 32-way, and should be avoided like the plague. I just wish we had a
> > dcache solution that didn't even need locks as much... :)
>
> You have one - dcache_rcu. It reduces the dcache_lock acquisition
> by about 65% over fastwalk.

I should clarify, this was with a webserver benchmark.

For those who want to use them, Maneesh's dcache_rcu-12 patch and my
RCU "performance" infrastructure patches are in -

http://sourceforge.net/project/showfiles.php?group_id=8875&release_id=111743

The latest release is 2.5.36-mm1.
rcu_ltimer and read_barrier_depends are pre-requisites for dcache_rcu.

Thanks
--
Dipankar Sarma <dipankar@in.ibm.com> http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.
-
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 13:29    [W:1.458 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site