From: Andi Kleen <[EMAIL PROTECTED]> Date: Wed, 09 Jan 2008 03:25:05 +0100
> David Miller <[EMAIL PROTECTED]> writes: > > > > The big problem is that recovery from even a single packet loss in a > > window makes us run kfree_skb() for a all the packets in a full > > window's worth of data when recovery completes. > > Why exactly is it a problem to free them all at once? Are you worried > about kernel preemption latencies? If the cpu is there spinning freeing up 500,000 SKBs, it isn't processing RX packets. It adds severe spikes in CPU utilization that are even moderate line rates begins to affect RTTs. Or do you think it's OK to process 500,000 SKBs while locked in a software interrupt. Perhaps you have another broken awk script to prove this :-) -- 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
