Messages in this thread | | | Date | Thu, 11 Dec 2003 05:32:07 -0800 | From | William Lee Irwin III <> | Subject | Re: [CFT][RFC] HT scheduler |
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William Lee Irwin III wrote: >> It will get contention anyway if they're all pounding on the same futex. >> OTOH, if they're all threads in the same process, they can hit other >> problems. I'll try to find out more about hackbench.
On Fri, Dec 12, 2003 at 12:30:07AM +1100, Nick Piggin wrote: > Oh, sorry I was talking about volanomark. hackbench AFAIK doesn't use > futexes at all, just pipes, and is not threaded at all, so it looks like > a different problem to the volanomark one. > hackbench runs into trouble at large numbers of tasks too though.
Volano is all one process address space so it could be ->page_table_lock; any chance you could find which spin_lock() call the pounded chunk of the lock section jumps back to?
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