From: Bill Davidsen <davidsen@tmr.com>
To: John Richard Moser <nigelenki@comcast.net>
Cc: Josh Boyer <jdub@us.ibm.com>, linux-kernel@vger.kernel.org
Subject: Re: Why does the kernel need a gig of VM?
Date: Tue, 01 Feb 2005 10:15:31 -0500 [thread overview]
Message-ID: <41FF9D13.8010902@tmr.com> (raw)
In-Reply-To: <41FAA51E.10000@comcast.net>
John Richard Moser wrote:
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> Hash: SHA1
>
> Wow.
>
> I'd heard that there was a way to set 3.5/0.5 GiB split, and that there
> was a patch that removed the split and isolated the kernel (but that was
> slow), so I was just curious about all this stuff with people screaming
> about how tight 4G of VM is vs a half gig or a gig that can be freed up.
The 4/4 split requires somewhat different logic than the others, but I
believe that other splits could be specified at runtime instead of as a
config option, should there ever be a need. From memory the 4/4 split
needs table flushing on every kernel entry.
--
-bill davidsen (davidsen@tmr.com)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
next prev parent reply other threads:[~2005-02-01 15:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-28 20:06 Why does the kernel need a gig of VM? John Richard Moser
2005-01-28 20:42 ` Josh Boyer
2005-01-28 20:48 ` John Richard Moser
2005-02-01 15:15 ` Bill Davidsen [this message]
2005-01-28 21:42 ` Oliver Neukum
2005-01-28 20:44 ` Chris Friesen
2005-01-29 1:32 ` Andy Isaacson
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