2010/10/13 Jean-Michel Hautbois <jhautbois@xxxxxxxxx>
2010/10/12 Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>> Thus, my jitter is 47Âs.
> This may seem low, but this is about two to three times what I expect and I
> cannot see why a bridge which is only forwarding a frame would have jitter ?
> If you have any idea, everything is interesting for me.
> I thought maybe to skb_clone ?
You probably have NAPI and/or interrupt coalescing setting
enabled on one or both of the devices.
--
Hi Stephen,
I have NAPI on my ethernet device, at least.
I will check for interrupt coalescing.
AFAIK, there is a skb_clone followed by a kfree in netif_receive_skb (the frame coming from eth0 to br0).
There is a jitter in this call of "freeing memory". I am looking at the path, in order to see why there is a clone.
BR,
JM
I have to tell I am working on a mpc52xx and am currently only interested in the eth->br path for the moment.
JM
_______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
