Messages in this thread | | | Date | Thu, 28 Mar 2002 19:39:42 -0500 (EST) | From | Bill Davidsen <> | Subject | Re: Linux Kernel Patch; setpriority |
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On Thu, 28 Mar 2002, Stephen Baker wrote:
> All this is really just pigeon dancing around the fact that Linux > doesn't implement the PTHREAD_SCOPE_PROCESS which is all I want . I t > would make Linux match Solaris and BSD model for POSIX threads. I guess > it wouldn't be POSIX if everyone implemented it the same set of > supported features. That's why I resorted to changing the nice value in > hopes of have some say in how things get scheduled without all the > superuser / capabilities hacks.
I just did a "man 3 pthreads" and that capability is listed as available... If you can boil it down to a small test program as I did, I'll run it on Linux and Solaris and see what I see.
Of course Linux doesn't implement anything here, you choose the implementation by pthreads lib and includes, the old MIT user-level one, the so-called "Linux threads" model, or the current NGPT model in current kernels and the library from IBM.
The latter work, at least for some definitions of "work," but I know there are some differences.
I don't see why starting two threads at different priorities when the program does init is enough overhead to notice, but I don't have your program so you may need something inobvious.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
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