Too Much Context Switching?

[Kris Kennaway]

Michel Talon wrote:
> On Mon, Jun 30, 2008 at 07:53:00PM +0200, Kris Kennaway wrote:
>> Yep, it could be that -- what confuses me though is that it is claimed 
>> that performance suddenly regressed.  If so then this cannot be the 
>> underlying cause.
> 
> It may be that the load has augmented to the point that contention
> imposes a rapid regression on throughput.

Yes, it could be that.  I don't know off-hand whether multiple threads 
are counted separately by vmstat (at a guess I'd say no), but ps/top/etc 
should show how many are active in the python process.

Kris