From: willy@thepuffingroup.com
To: Manfred Spraul <manfred@colorfullife.com>
Cc: zlatko@iskon.hr, alan@redhat.com, linux-mm@kvack.org,
linux-kernel@vger.rutgers.edu
Subject: Re: shrink_mmap() change in ac-21
Date: Tue, 20 Jun 2000 13:01:30 -0400 [thread overview]
Message-ID: <20000620130130.I28546@vodka.thepuffingroup.com> (raw)
In-Reply-To: <007501bfdad3$26288e90$0a1e18ac@local>; from Manfred Spraul on Tue, Jun 20, 2000 at 06:14:33PM +0200
On Tue, Jun 20, 2000 at 06:14:33PM +0200, Manfred Spraul wrote:
> I'm also concerned about 1GB boxes:
> the highmem zone only contains ~ 64 MB (or 128?), and so most allocations go
> into a tiny zone and are then "downgraded" to GFP_NORMAL.
Not that I want to get involved with the VM system in _any way at all_,
but bcrl pointed out that highmem doesn't really cost a lot, so why not
change to:
3GB user space
512MB vmalloc space
512MB kernel space
i don't think there are many machines with amounts of RAM between 512MB
and 768MB so the worst case is that only 1/3 of the RAM is high, instead
of 1/8 (vmalloc is currently 128MB of 1GB). i know jeff garzik wants
more vmalloc space for a frame grabber so maybe now is the right time
to make that change?
--
The Sex Pistols were revolutionaries. The Bay City Rollers weren't.
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next prev parent reply other threads:[~2000-06-20 17:01 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-06-19 20:14 shrink_mmap() change in ac-21 Zlatko Calusic
2000-06-19 21:07 ` Rik van Riel
2000-06-19 21:46 ` Jamie Lokier
2000-06-19 22:10 ` Rik van Riel
2000-06-19 22:43 ` Andrea Arcangeli
2000-06-19 22:48 ` Andrea Arcangeli
2000-06-20 9:03 ` Zlatko Calusic
2000-06-20 16:18 ` Rik van Riel
2000-06-20 16:53 ` Juan J. Quintela
2000-06-20 17:30 ` Manfred Spraul, Juan J. Quintela
2000-06-20 17:41 ` Juan J. Quintela
2000-06-20 19:00 ` Andrea Arcangeli
2000-06-19 21:47 ` Manfred Spraul, Zlatko Calusic
2000-06-20 8:21 ` Zlatko Calusic
2000-06-20 16:14 ` Manfred Spraul, Zlatko Calusic
2000-06-20 17:01 ` willy [this message]
2000-06-20 17:03 ` Alan Cox
[not found] <200006202027.NAA01142@penguin.transmeta.com>
2000-06-20 22:59 ` Rik van Riel
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