From: Alex Tomas <bzzz@tmi.comex.ru>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Rik van Riel <riel@surriel.com>,
Paul Albrecht <palbrecht@uswest.net>,
linux-kernel@vger.kernel.org
Subject: Re: 2.4 vm, program load, page faulting, ...
Date: 17 Mar 2003 19:37:22 +0300 [thread overview]
Message-ID: <m3znnugda5.fsf@lexa.home.net> (raw)
In-Reply-To: <20030317151004.GR20188@holomorphy.com>
>>>>> William Lee Irwin (WLI) writes:
WLI> On Mon, Mar 17, 2003 at 10:02:21AM -0500, Rik van Riel wrote:
>> The mmap() syscall only sets up the VMA info, it doesn't fill in
>> the page tables. That only happens when the process page faults.
>> Note that filling in a bunch of page table entries mapping already
>> present pagecache pages at exec() time might be a good idea. It's
>> just that nobody has gotten around to that yet...
WLI> SVR4 did and saw an improvement wrt. page fault rate, according
WLI> to Vahalia.
WLI> I'd like to see whether this is useful for Linux.
I tried this on dual P3 year and half ago and didn't see any improvement
next prev parent reply other threads:[~2003-03-17 16:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-16 4:59 2.4 vm, program load, page faulting, Paul Albrecht
2003-03-17 15:02 ` Rik van Riel
2003-03-17 15:10 ` William Lee Irwin III
2003-03-17 16:01 ` Rik van Riel
2003-03-17 16:52 ` wind
2003-03-17 16:50 ` Alex Tomas
2003-03-17 17:12 ` wind-lkml
2003-03-17 17:38 ` wind-lkml
2003-03-17 18:57 ` Marc-Christian Petersen
2003-03-17 19:06 ` wind-lkml
2003-03-17 19:34 ` wind
2003-03-17 22:05 ` Andrew Morton
2003-03-17 23:08 ` wind
2003-03-17 23:28 ` Andrew Morton
2003-03-18 0:12 ` wind
2003-03-17 16:37 ` Alex Tomas [this message]
2003-03-18 7:43 ` Paul Albrecht
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