Messages in this thread | | | Subject | Re: [PATCH] strict VM overcommit accounting for 2.4.32/2.4.33-pre1 | From | Alan Cox <> | Date | Sat, 31 Dec 2005 00:55:02 +0000 |
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On Gwe, 2005-12-30 at 23:06 +0300, Al Boldi wrote: > > +3 - (NEW) paranoid overcommit The total address space commit > > + for the system is not permitted to exceed swap. The machine > > + will never kill a process accessing pages it has mapped > > + except due to a bug (ie report it!) > > This one isn't in 2.6, which is critical for a stable system.
Actually it is
In the 2.4 case we took "50% RAM + swap" as the safe sane world 'never OOM kill' and to all intents and purposes it works. We also had a 100% paranoia mode.
When it was ported to 2.6 (not by me) whoever did it very sensibly made the percentage tunable and removed "mode 3" since its mode 2 0% ram and can be set that way.
Alan
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