Messages in this thread | | | Date | Wed, 13 Aug 2008 11:16:35 -0700 | From | Arjan van de Ven <> | Subject | Re: pthread_create() slow for many threads; also time to revisit 64b context switch optimization? |
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On Wed, 13 Aug 2008 11:04:29 -0700 Ulrich Drepper <drepper@redhat.com> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Linus Torvalds wrote: > > Ulrich, I don't understand why you worry more about a _potential_ > > (and fairly unlikely) complaint, than about a real one today. > > Of course I care. All I try to do is to prevent going from one > extreme (all focus on P4s) to the other (ignore P4s completely).
(fwiw as far as I know this is only about early 64 bit P4s, not later generations) > > Even ignoring this one case here, I think it's in any case useful for > userlevel to tell the kernel that an anonymous memory region is needed > for a stack. This might allow better optimizations and/or security > implementations.
yeah maybe we should also tell it we expect it to be used downwards. Oh wait.. MAP_GROWSDOWN ?
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