In a message dated 8/28/02 11:48:47 PM, [EMAIL PROTECTED] writes:
> Subject: ns_param SystemScope obsolete? > > Is the ns_param SystemScope obsolete? > > Grepping through both the 3.3+ad13 and 4.x (cvs head) sources, I don't > see it anywhere. It looks to me as if the thread scope is determined > solely by -DUSE_PTHREAD_SYSSCOPE=1 in Makefile.global at compile time. > Is this true? Is SystemScope just an old leftover from AOLserver > 2.3.3? > > From the code, I'm pretty sure the answer is "thread system scope is > determined solely at compile time, ns_param SystemScope is ignored", > but on a 2 processor Sun box, it looked to me as if I was getting > higher CPU utilization (as reported by top) with SystemScope set to on > than with it off. Which I suspect was just my imagination, but... > Correct - SystemScope setting is now ignored. The latest thinking is system scope is always better. Linux has always been system scope only. Sun did a lot of work on this in Solaris 8 and decided to remove process scope altogether starting in version 9 - details here: http://soldc.sun.com/articles/alt_thread_lib.html -Jim
