On Sat, 27 Aug 2005, Mateusz Berezecki wrote: > I would really appreciate any comment on the overall performance of task > switching with 25 000 threads running on the Linux system. I was asked to work > on some software which spawns 25 000 threads and I am really worried if > it will ever work on 2 CPU HP Blade. The kernel was modified to support > bigger threads amount running (I have no idea how it was done, probably > just changing hardcoded limits) What is the performance impact of > so much threads on the overall system performance? Is there any ? > Wouldn't it be that such application would spend all of its time > switching contexts ? I'm asking for some kind of an authoritative answer > quite urgently. What is the optimum thread amount on 2 CPU SMP system > running Linux ?
At 32k threads you run into the limit of waiters for RW semaphores. So make sure that the number stays lower than that or use a 64 bit platform that supports more threads. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
