Re: [Bugme-new] [Bug 12562] New: High overhead while switching orsynchronizing threads on different cores

[Peter Zijlstra]

On Thu, 2009-01-29 at 11:24 +0100, Thomas Pilarski wrote:
> Some explanation of the test program. 
> 
> ../schedulerissue 1 4096 8 2000
> 1 producer and 1 consumer
> buffer size of 4096 doubles * 8byte 
> 8 buffer (256kB total buffer)
> 2000 messages
> 
> ../schedulerissue 2 4096 8 2000
> 2 producer and 2 consumer
> buffer size of 4096 doubles * 8byte 
> 8 buffer (256kB total buffer)
> 2000 messages
> 
> 
> It was not 512KB bytes in the test before, but 4MB.
> But there is the same problem with a total buffer size of 48kB and 4
> threads (./schedulerissue 2 2048 3 20000).

Right, read the proglet (and removed that usleep(1)) and am poking at
it.

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