Stephen Hemminger <[EMAIL PROTECTED]> wrote on 07/20/2007 12:48:48 PM:
> You may see worse performance with batching in the real world when > running over WAN's. Like TSO, batching will generate back to back packet > trains that are subject to multi-packet synchronized loss. The problem is that > intermediate router queues are often close to full, and when a long string > of packets arrives back to back only the first ones will get in, the rest > get dropped. Normal sends have at least minimal pacing so they are less > likely do get synchronized drop. Also forgot to mention in the previous mail, if performance is seen to be dipping, batching can be disabled on WAN's by: echo 0 > /sys/class/net/<dev>/tx_batch_skbs and use batching on local/site networks in that case. - 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
