From: William Lee Irwin III <wli@holomorphy.com>
To: davidm@hpl.hp.com
Cc: "David S. Miller" <davem@redhat.com>,
torvalds@osdl.org, linux-arch@vger.kernel.org
Subject: Re: copy_page_range()
Date: Mon, 9 Aug 2004 02:29:43 -0700 [thread overview]
Message-ID: <20040809092943.GP11200@holomorphy.com> (raw)
In-Reply-To: <16663.17268.247682.953102@napali.hpl.hp.com>
On Mon, 9 Aug 2004 02:04:58 -0700, William Lee Irwin III <wli@holomorphy.com> said:
William> These results are actually consistent with large-memory
William> ia32. Instruction-level profiles showed that the largest
William> overhead in copy_page_range() on such ia32 boxen appeared
William> to be mm->rss++.
On Mon, Aug 09, 2004 at 02:27:16AM -0700, David Mosberger wrote:
> Hmmh, for me, the single biggest stall seems to come from the pmd_none()
> check in free_one_pmd().
That was the case in clear_page_tables(); it was copy_page_range() that
saw mm->rss++ take an unusual amount of time.
-- wli
next prev parent reply other threads:[~2004-08-09 9:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-07 7:05 copy_page_range() David S. Miller
2004-08-07 8:07 ` copy_page_range() William Lee Irwin III
2004-08-11 7:07 ` copy_page_range() David S. Miller
2004-08-11 7:35 ` copy_page_range() William Lee Irwin III
2004-08-11 16:13 ` copy_page_range() Linus Torvalds
2004-08-11 20:45 ` copy_page_range() David S. Miller
2004-08-12 3:53 ` copy_page_range() David S. Miller
2004-08-09 9:01 ` copy_page_range() David Mosberger
2004-08-09 9:04 ` copy_page_range() William Lee Irwin III
2004-08-09 9:27 ` copy_page_range() David Mosberger
2004-08-09 9:29 ` William Lee Irwin III [this message]
2004-08-09 10:01 ` copy_page_range() David Mosberger
2004-08-09 17:46 ` copy_page_range() David S. Miller
2004-08-09 17:08 ` copy_page_range() Linus Torvalds
2004-08-09 18:49 ` copy_page_range() William Lee Irwin III
2004-08-09 17:45 ` copy_page_range() David S. Miller
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