From: "ron minnich" <rminnich@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu>
Subject: Re: [9fans] plan 9 overcommits memory?
Date: Mon, 3 Sep 2007 14:19:06 -0700 [thread overview]
Message-ID: <13426df10709031419n16ae32f2i109d1be5948d074b@mail.gmail.com> (raw)
In-Reply-To: <a2892e3b0e181ecd5e6dd70ec7876525@terzarima.net>
One option for Erik: try changing the segment allocator so that it
faults in all segment pages on creation. Would this do what you want?
I will try this if I get time later today. Assuming it is as simple as
my simple-minded description makes it sound.
If it would, maybe a simple
echo faultall > /proc/pid/ctl
would be useful
would be interesting: iterate over all segments, and make sure each
has a real page for all pages in all segments.
I can see the need for not overcommitting, and also for actually
creating and filling out the pages on malloc or other allocation.
Indeed, lack of OS thrashing due to paging is one feature cited by
proponents of this:
http://www.cs.sandia.gov/~smkelly/SAND2006-2561C-CUG2006-CatamountDualCore.pdf
ron
next prev parent reply other threads:[~2007-09-03 21:19 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-03 3:38 geoff
2007-09-03 5:35 ` Scott Schwartz
2007-09-03 6:05 ` Uriel
2007-09-03 13:33 ` erik quanstrom
2007-09-03 17:09 ` john
2007-09-03 17:17 ` Gorka Guardiola
2007-09-03 17:25 ` Francisco J Ballesteros
2007-09-03 17:30 ` john
2007-09-03 19:47 ` Charles Forsyth
2007-09-03 19:46 ` Uriel
2007-09-03 19:54 ` Charles Forsyth
2007-09-03 19:54 ` Uriel
2007-09-03 20:34 ` geoff
2007-09-03 20:16 ` erik quanstrom
2007-09-03 17:32 ` erik quanstrom
2007-09-03 17:39 ` Francisco J Ballesteros
2007-09-03 17:43 ` john
2007-09-03 17:45 ` john
2007-09-03 19:52 ` Charles Forsyth
2007-09-05 8:33 ` sqweek
2007-09-04 8:48 ` Douglas A. Gwyn
2007-09-03 18:13 ` geoff
2007-09-03 20:17 ` erik quanstrom
2007-09-03 20:48 ` geoff
2007-09-03 22:01 ` erik quanstrom
2007-09-03 22:43 ` Charles Forsyth
2007-09-03 23:51 ` erik quanstrom
2007-09-04 0:04 ` Charles Forsyth
2007-09-04 14:44 ` erik quanstrom
2007-09-04 15:07 ` Charles Forsyth
2007-09-04 15:18 ` ron minnich
2007-09-04 15:18 ` Charles Forsyth
2007-09-05 8:48 ` Douglas A. Gwyn
2007-09-05 10:53 ` erik quanstrom
2007-09-06 8:42 ` Douglas A. Gwyn
2007-09-06 17:15 ` Joel C. Salomon
2007-09-06 19:38 ` ron minnich
2007-09-06 20:18 ` Charles Forsyth
2007-09-06 23:37 ` Steve Simon
2007-09-07 3:09 ` Roman Shaposhnik
2007-09-07 4:09 ` Bruce Ellis
2007-09-07 4:25 ` Lyndon Nerenberg
2007-09-07 4:37 ` Bruce Ellis
2007-09-07 4:43 ` Lyndon Nerenberg
2007-09-10 15:24 ` roger peppe
2007-09-07 10:55 ` erik quanstrom
2007-09-04 23:32 ` erik quanstrom
2007-09-03 21:16 ` Charles Forsyth
2007-09-03 21:19 ` ron minnich [this message]
2007-09-03 21:41 ` Eric Van Hensbergen
2007-09-03 21:51 ` erik quanstrom
2007-09-03 13:21 ` erik quanstrom
2007-09-03 14:01 ` Sape Mullender
2007-09-03 14:32 ` erik quanstrom
2007-09-03 15:28 ` Sape Mullender
2007-09-04 4:32 ` lucio
2007-09-04 7:23 ` Dave Eckhardt
2007-09-04 8:48 ` Douglas A. Gwyn
-- strict thread matches above, loose matches on Subject: below --
2007-08-31 11:41 erik quanstrom
2007-09-02 21:27 ` Russ Cox
2007-09-03 0:43 ` erik quanstrom
2007-09-04 8:47 ` Douglas A. Gwyn
2007-09-04 13:39 ` David Leimbach
2007-09-04 14:41 ` erik quanstrom
2007-09-04 15:54 ` David Leimbach
2007-09-04 17:37 ` sqweek
2007-09-04 18:10 ` ron minnich
2007-09-04 18:53 ` sqweek
2007-09-03 1:23 ` Scott Schwartz
2007-09-03 1:47 ` ron minnich
2007-09-03 2:11 ` erik quanstrom
2007-09-03 2:11 ` erik quanstrom
2007-09-04 8:48 ` Douglas A. Gwyn
2007-09-03 5:28 ` Scott Schwartz
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