From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: pgd_free, pmd_free, and pte_free trapping memory.
Date: Wed, 17 Mar 2004 17:10:50 +0000 [thread overview]
Message-ID: <16472.34458.139213.286636@napali.hpl.hp.com> (raw)
In-Reply-To: <20040316112424.GA20203@lnx-holt>
>>>>> On Wed, 17 Mar 2004 10:20:16 -0600, Jack Steiner <steiner@sgi.com> said:
Jack> 3.1 usec 16K node local memory
Jack> 6.1 usec 16K remote memory
Jack> 12.5 usec 64K node local memory
Jack> 24.5 usec 64K remote memory
Roughly 4.9GByte/sec for local memory. That sounds about right.
Robin: I certainly agree that per-CPU allocation is the Right Thing
for SMP. My point is that the quick-list optimization is orthogonal
and my gut feeling is that it's worth doing it. LMbench on a UP with
and without quicklist should be able to confirm that (and no, I don't
care at all how or where the quicklist optimization is
implemented---just as long as you can take advantage of the fact that
freed directories are already zeroed).
--david
next prev parent reply other threads:[~2004-03-17 17:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-16 11:24 pgd_free, pmd_free, and pte_free trapping memory Robin Holt
2004-03-16 14:48 ` Christoph Hellwig
2004-03-16 15:24 ` Robin Holt
2004-03-16 15:34 ` Christoph Hellwig
2004-03-17 12:27 ` Robin Holt
2004-03-17 16:20 ` Jack Steiner
2004-03-17 16:53 ` Christoph Hellwig
2004-03-17 17:10 ` David Mosberger [this message]
2004-03-17 20:33 ` Jack Steiner
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