Messages in this thread | | | Date | Thu, 7 Jun 2001 14:10:21 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | Re: Break 2.4 VM in five easy steps |
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On Thu, 7 Jun 2001, Mike Galbraith wrote:
> On 6 Jun 2001, Eric W. Biederman wrote: > > > Mike Galbraith <mikeg@wen-online.de> writes: > > > > > > If you could confirm this by calling swapoff sometime other than at > > > > reboot time. That might help. Say by running top on the console. > > > > > > The thing goes comatose here too. SCHED_RR vmstat doesn't run, console > > > switch is nogo... > > > > > > After running his memory hog, swapoff took 18 seconds. I hacked a > > > bleeder valve for dead swap pages, and it dropped to 4 seconds.. still > > > utterly comatose for those 4 seconds though. > > > > At the top of the while(1) loop in try_to_unuse what happens if you put in. > > if (need_resched) schedule(); > > It should be outside all of the locks. It might just be a matter of everything > > serializing on the SMP locks, and the kernel refusing to preempt itself. > > That did it.
What about including this workaround in the kernel ?
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