Re: [tbench regression fixes]: digging out smelly deadmen.

Evgeniy Polyakov
2008-10-30T18:40:42Z

On Thu, Oct 30, 2008 at 11:15:26AM -0700, Stephen Hemminger (shemminger@vyatta.com) wrote:
> Has anyone looked into the impact of port randomization on this benchmark.
> If it is generating lots of sockets quickly there could be an impact:
> * port randomization causes available port space to get filled non-uniformly
> and what was once a linear scan may have to walk over existing ports.
> (This could be improved by a hint bitmap)
>
> * port randomization adds at least one modulus operation per socket
> creation. This could be optimized by using a loop instead.

In this benchmark only two sockets are created per client for the whole
run, so this should not have any impact on performance.

--
Evgeniy Polyakov