[PATCH 1/2] Block: Disable polling stats when iostats are disabled

Jon Derrick jonathan.derrick at intel.com
Tue Mar 8 09:58:11 PST 2016


> 
> I fail to see how replacing incrementation with a branch statement helps
> performance or even not making it worse...

It may have been coincidental in my setup - I had assumed the test on the local io_stat was cheaper than the cost of following hctx to then increment (or not) poll_invoked.



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