From: Andrew Morton <akpm@digeo.com>
To: wind@cocodriloo.com
Cc: bzzz@tmi.comex.ru, wind@cocodriloo.com, riel@surriel.com,
linux-kernel@vger.kernel.org
Subject: Re: 2.4 vm, program load, page faulting, ...
Date: Mon, 17 Mar 2003 15:28:55 -0800 [thread overview]
Message-ID: <20030317152855.388b643f.akpm@digeo.com> (raw)
In-Reply-To: <20030317230839.GG11526@wind.cocodriloo.com>
wind@cocodriloo.com wrote:
>
> > This is all a bit dubious for several reasons. Most particularly, the
> > up-front instantiation of the pages in pagetables makes unneeded pages harder
> > to reclaim. It would be really neat if someone could try putting the
> > madvise(MADV_WILLNEED) into glibc and test that. Maybe on a 2.4 kernel.
>
>
> something like this one?
>
No, not at all. I meant a patch against glibc, not against the kernel!
Like this:
map = mmap(..., PROT_EXEC, ...);
+ if (getenv("MAP_PREFAULT"))
+ madvise(map, length, MADV_WILLNEED);
next prev parent reply other threads:[~2003-03-17 23:24 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 [this message]
2003-03-18 0:12 ` wind
2003-03-17 16:37 ` Alex Tomas
2003-03-18 7:43 ` Paul Albrecht
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