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

From: Eric Dumazet
Date: Thu Oct 30 2008 - 14:44:49 EST


Stephen Hemminger a écrit :
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.



tbench setups one socket per client, then send/receive lot of messages on this socket.

Connection setup time can be ignored for the tbench regression analysis


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/