linux-kernel - Re: [PATCH 00/46] rcu-walk and dcache scaling

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Message-ID: <20101203165508.GC3346@amd>
Date:	Sat, 4 Dec 2010 03:55:08 +1100
From:	Nick Piggin <npiggin@...nel.dk>
To:	David Miller <davem@...emloft.net>
Cc:	npiggin@...nel.dk, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/46] rcu-walk and dcache scaling

On Wed, Dec 01, 2010 at 10:03:30AM -0800, David Miller wrote:
> From: Nick Piggin <npiggin@...nel.dk>
> Date: Sat, 27 Nov 2010 21:15:58 +1100
> 
> > git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin.git vfs-scale-working
> 
> Just want to say that I've been running this code for the past few days on
> my 128 cpu box and it seems quite sturdy.
> 
> If there are any kinds of vfs benchmarks you want me to run on this
> machine both with and without the scaling changes, just let me know.

Hi Dave, great, thanks!

I am mostly interested in single-thread performance on different ISAs
and different microarchitectures.

Microbenchmarks are easy, I attached a couple of quick ones I use in
an offline mail.

Single-threaded (preloadindex=false), cached and uncached, git diff on
an unmodified tree is slightly more real world.

And then anything else you can think of.

Thanks,
Nick

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