Re: 2.5.36-mm1 dbench 512 profiles

From: Dipankar Sarma (
Date: Fri Sep 20 2002 - 15:54:23 EST

On Fri, Sep 20, 2002 at 08:32:48PM +0000, Hanna Linder wrote:
> --On Friday, September 20, 2002 11:51:13 -0700 Hanna Linder <> wrote:
> >
> > Perhaps it is time to reconsider replacing fastwalk with dcache_rcu.
> These patches were written by Maneesh Soni. Since the Read-Copy Update
> infrastructure has not been accepted into the mainline kernel yet (although
> there were murmurings of it being acceptable) you will need to apply
> those first. Here they are, apply in this order. Too big to post
> inline text though. These are provided against 2.5.36-mm1.
> There has been quite a bit of testing done on this and it has proven
> quite stable. If anyone wants to do any additional testing that would
> be great.

Thanks for the vote of confidence :)

Now for some results (out of date, but also has results with backported code
from 2.5) see

Preliminary profiling of webserver benchmarks in 2.5.3X show similar potential
for dcache_rcu. I will have actual results published when we can
get formal runs done.


Dipankar Sarma  <>
Linux Technology Center, IBM Software Lab, Bangalore, India.
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