On Sun, 2 May 2004, Alexandre Sunny Kovalenko wrote: > > I did mention this one ;) With older sources (kern_thread.c 1.175) I have tried > both with the similar results. With the last update (last CTM from EST morning > on Friday 4/30) I only tried _ULE. If you need me to try _4BSD, let me know. > > Just out of curiosity, if I have 64 threads and 4 CPUs would not result be the > same with PTHREAD_SCOPE_SYSTEM and PTHREAD_SCOPE_PROCESS, since I could not > get more KSEGs then I have CPUs, and default is 8 threads per KSEG? Or am I > totally off the mark? You can have more KSEGs than CPUs. The default is one KSEG with N KSEs (where N is the number of CPUs). All scope process threads run in the N KSEs; these threads are not bound to any specific KSE within the KSEG. Scope system threads get their own KSEG and KSE. I don't know how the various schedulers schedule KSEs onto processors. -- Dan EischenReceived on Sun May 02 2004 - 07:57:54 UTC
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