Messages in this thread | | | Date | Mon, 18 Aug 2003 17:31:10 -0700 | From | William Lee Irwin III <> | Subject | Re: [RFC] Re: Blender profiling-1 O16.2int |
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On Mon, Aug 18, 2003 at 07:14:12PM -0500, Wes Janzen wrote: > That makes sense, I was running a program that I found on IBM's website > that's supposed to test context switching speed this weekend. It has 1 > free lock and passes them around the group. If I put it up to 32 > threads or so with one spare lock, I can start to see the starvation. > When running vmstat, it's apparent when the the starvation occurs as the > context switching sky-rockets. I was going to add to the example code > to check for how many times a thread wakes up waiting for the lock and > can't get it after reading that message about locks in the list. I > guess I won't have to do that now. Anyway, that'll bring my system to a > halt when the thread count gets up over 256. Still, it's usuable as > long as I'm not doing something else that makes heavy use of the processor.
Could you give a URL to that benchmark?
Thanks.
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