From: Christoph Lameter <clameter@sgi.com>
To: Paul Mackerras <paulus@samba.org>
Cc: Rik van Riel <riel@redhat.com>,
Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
David Woodhouse <dwmw2@infradead.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: A scrub daemon (prezeroing)
Date: Fri, 4 Feb 2005 09:02:10 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.58.0502040900450.759@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <16899.15980.791820.132469@cargo.ozlabs.ibm.com>
On Fri, 4 Feb 2005, Paul Mackerras wrote:
> > Yes but its a short burst that only occurs very infrequestly and it takes
>
> It occurs just as often as we clear pages in the page fault handler.
> We aren't clearing any fewer pages by prezeroing, we are just clearing
> them a bit earlier.
scrubd clears pages of orders 7-4 by default. That means 2^4 to 2^7
pages are cleared at once.
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next prev parent reply other threads:[~2005-02-04 17:02 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-21 20:29 Christoph Lameter
2005-01-27 12:15 ` David Woodhouse
2005-01-27 13:12 ` Robin Holt
2005-01-27 13:14 ` David Woodhouse
2005-01-27 17:02 ` Christoph Lameter
2005-02-08 11:31 ` Ralf Baechle
2005-02-02 15:32 ` Marcelo Tosatti
2005-02-02 19:05 ` Christoph Lameter
2005-02-02 16:31 ` Marcelo Tosatti
2005-02-02 21:31 ` Christoph Lameter
2005-02-02 21:39 ` David Woodhouse
2005-02-03 3:06 ` Rik van Riel
2005-02-03 23:39 ` Paul Mackerras
2005-02-04 0:59 ` Christoph Lameter
2005-02-04 5:30 ` Paul Mackerras
2005-02-04 6:26 ` Christoph Lameter
2005-02-04 6:43 ` Nick Piggin
2005-02-04 6:50 ` Christoph Lameter
2005-02-04 9:20 ` Paul Mackerras
2005-02-04 9:28 ` Andi Kleen
2005-02-04 17:02 ` Christoph Lameter [this message]
2005-02-04 22:25 ` Paul Mackerras
2005-02-02 21:00 ` Maciej W. Rozycki
2005-02-02 21:33 ` David Woodhouse
-- strict thread matches above, loose matches on Subject: below --
2005-01-04 23:13 Prezeroing V3 [1/4]: Allow request for zeroed memory Christoph Lameter
2005-01-08 21:12 ` Hugh Dickins
2005-01-08 21:56 ` David S. Miller
2005-01-21 20:15 ` A scrub daemon (prezeroing) Christoph Lameter
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