From: Paul Jackson <pj@sgi.com>
To: Robin Holt <holt@sgi.com>
Cc: ak@suse.de, linux-mm@kvack.org, akpm@osdl.org,
nickpiggin@yahoo.com.au, rientjes@google.com, mbligh@google.com,
rohitseth@google.com, menage@google.com, clameter@sgi.com
Subject: Re: [TAKE] memory page_alloc zonelist caching speedup
Date: Mon, 16 Oct 2006 09:58:05 -0700 [thread overview]
Message-ID: <20061016095805.f7576230.pj@sgi.com> (raw)
In-Reply-To: <20061016112535.GA13218@lnx-holt.americas.sgi.com>
Robin wrote:
> Paul, I think Andi is concerned that we will have a heavily shared
> cache line which now becomes frequently invalidated.
Once a second invalidation of a few cache lines that are
only accessed from one node beats once per memory allocation
cross-node accesses of cache lines invalidated every free.
Big time.
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.925.600.0401
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next prev parent reply other threads:[~2006-10-16 16:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-10 8:14 [TAKE] memory page_alloc zonelist caching speedup Paul Jackson
2006-10-16 9:34 ` Andi Kleen
2006-10-16 10:26 ` Paul Jackson
2006-10-16 11:25 ` Robin Holt
2006-10-16 16:58 ` Paul Jackson [this message]
2006-10-16 18:31 ` Paul Jackson
2006-11-08 10:21 ` Paul Jackson
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