Date: Sat, 13 Nov 2004 18:19:39 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Peter Wemm <peter@wemm.org> Cc: freebsd-arch@freebsd.org Subject: Re: U Area Removal Message-ID: <200411140219.iAE2Jd8Z003117@apollo.backplane.com> References: <20041111030035.GA70923@VARK.MIT.EDU> <200411131600.55982.peter@wemm.org>
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:On Wednesday 10 November 2004 07:00 pm, David Schultz wrote:
:
:> I propose to remove the ability to swap the U area, allocating
:> p_stats from malloced memory instead. Medium-term scheduling and
:> swapping of kernel stacks would be retained.
:
:For what its worth, I support this change. With the plimit/pstats fixes
:of course. :-)
:
:--
:Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com
I've had u-area swapping turned off almost from day-1 in DragonFly
with no adverse effects. I'm still using the area for a stack so
I haven't completely ripped it out, but as far as the swapping goes
I think it's a good idea to rip it out. It does significantly simplify
certain aspects of the kernel.
-Matt
Matthew Dillon
<dillon@backplane.com>
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