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SubjectRe: [Patch 1/1] init: Provide a kernel start parameter to increase pid_max v2
>>>>> "Rik" == Rik van Riel <riel@redhat.com> writes:

Rik> On 04/21/2010 12:59 PM, Hedi Berriche wrote:
>> On Wed, Apr 21, 2010 at 10:20 Alan Cox wrote:
>> |> of 32k will not be enough. A system with 1664 CPU's, there are 25163 processes
>> |> started before the login prompt. It's estimated that with 2048 CPU's we will pass
>> |
>> | Is that perhaps the bug not the 32K limit?
>>
>> Doubt it: I just checked on an *idle* 1664 CPUs system and I can see 26844
>> tasks, all but few being kernel threads.

Rik> That is 15 kernel threads per CPU.

Rik> Reducing the number of kernel threads sounds like a
Rik> useful thing to do.

Isn't that already a project? I thought someone (Jeff? Jorn? Tejun? Bueller
bueller....?) was already proposing a patch set to reduce the number
of kernel threads by having dynamic workqueues instead, so that we
didn't spawn a bunch of threads that never did anything?
John


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