Re: Slow pthread_create() under high load

From: Richard Gooch (rgooch@ras.ucalgary.ca)
Date: Sun Mar 26 2000 - 05:19:26 EST


Nicholas Vinen writes:
>
> On Sat, 25 Mar 2000, Alan Cox wrote:
>
> > > If you want to see this changes get the kernel changes in place.
> > > There are various patches floating around which combined will allow a
> > > correct and fast implementation. But they were not added.
> >
> > The problem he is seeing however appears unrelated to the fact posix
> > threads is a braindamaged pile of crap. Its because the scheduler penalises
> > across forks as part of its fairness approach. Ingo showed that was in
> > fact wrong and posted some algorithm changes for 2.3.9x
>
> Alan, if POSIX threads are a "braindamaged pile of crap" (not arguing
> but I do use threads quite heavily) what would you rather us use as
> threads in Linux? Or are you not happy with any current implementation?
> The described technique does seem rather hackish. I'm interested in
> finding out a better way of doing something akin to threads. Is this
> planned in a future kernel?

Just use clone(2) directly. That's what I do.

                                Regards,

                                        Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca

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