From: jamal <[EMAIL PROTECTED]> Date: Wed, 06 Jun 2007 19:54:47 -0400
> On Wed, 2007-06-06 at 16:48 -0700, Rick Jones wrote: > > > RX queues - yes, I can see; TX queues, it doesnt make sense to put > > > different rings on different CPUs. > > > > To what extent might that preclude some cachelines bouncing hither and > > yon between the CPUs? > > I think the bouncing will exist a lot more with the multi CPUs. But one > would assume if you go that path, you would also parallelize the stack > on egress to reduce such an effect. I guess the point i am not seeing is > the value. The tx, once hitting the NIC is an IO issue not a CPU issue. Disagred, that single TX lock kills cpu cycles. If all of the TX queues are independantly programmable of one another, the single TX lock kills performance. > off for the night. Enjoy the game. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
