On Sat, 2005-08-27 at 14:11 +0200, Mateusz Berezecki wrote: > Hello List Readers, > > 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 ? > Well the obvious question is: what kernel version and which thread library?
2.4 with LinuxThreads might have severe problems. However 2.6 with NPTL should be able to handle it, IIRC Igno once did a million threads with that combination just to show that it worked ;-). -- Peter Zijlstra <[EMAIL PROTECTED]> - 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/
