Re: [RFC] Re: Blender profiling-1 O16.2int

[William Lee Irwin III <wli@holomorphy.com>]

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.


-- wli