From: Paul Jackson <pj@sgi.com>
To: Paul Jackson <pj@sgi.com>
Cc: akpm@osdl.org, linux-mm@kvack.org, nickpiggin@yahoo.com.au,
rientjes@google.com, ak@suse.de, mbligh@google.com,
rohitseth@google.com, menage@google.com, clameter@sgi.com
Subject: Re: [RFC] memory page_alloc zonelist caching speedup
Date: Mon, 9 Oct 2006 23:45:30 -0700 [thread overview]
Message-ID: <20061009234530.f895d5f0.pj@sgi.com> (raw)
In-Reply-To: <20061009150259.d5b87469.pj@sgi.com>
pj wrote:
> 2) Let's say you just got a sample petahertz processor from your
> favorite CPU vendor, with 64 cores and 4 TBytes of 10 picosecond
> RAM, all in one package. You can built, boot and test your entire
> distro in 4.2 seconds.
This silly example motivates changing my one second (1 * HZ) constant
timeout on the zonelist cache to a variable, computed at boottime as a
simple minded function of bogomips or clock speed or some such.
At the (slow) rate of CPU frequency increases the last few years, we've
got a while before we need to worry about this change.
--
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:[~2006-10-10 6:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-09 10:54 [RFC] memory page alloc minor cleanups Paul Jackson, Paul Jackson
2006-10-09 10:54 ` [RFC] memory page_alloc zonelist caching speedup Paul Jackson
2006-10-09 18:12 ` Andrew Morton
2006-10-09 22:02 ` Paul Jackson
2006-10-10 4:51 ` Paul Jackson
2006-10-10 6:34 ` David Rientjes
2006-10-10 7:03 ` Paul Jackson
2006-10-10 17:07 ` Christoph Lameter
2006-10-10 19:35 ` Paul Jackson
2006-10-10 6:45 ` Paul Jackson [this message]
2006-10-09 11:08 ` [RFC] memory page alloc minor cleanups Christoph Lameter
2006-10-09 11:50 ` Paul Jackson
2006-10-09 17:12 ` Christoph Lameter
2006-10-09 13:11 ` Nick Piggin
2006-10-09 20:24 ` Paul Jackson
2006-10-10 1:45 ` Paul Jackson
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