From: jamal <[EMAIL PROTECTED]> Date: Wed, 07 Dec 2005 16:37:10 -0500
> I think there is value for prefetch - just not the way the current patch > has it. Something less adventorous as suggested by Robert would make a > lot more sense. Looking at the e1000 patch in question again, it may be doing a little bit too much prefetching, even for my taste. Just prefetching at skb->data when receiving a packet is probably about right. If I read the e1000 patch correct, it prefetches the 2nd, 3rd, etc. packets processed in a RX run twice. Once as the "next_skb" and then again when it is "skb". In fact, if next_skb is still being DMA'd by the device this could cause some L2 cache ping-pong between the PCI controller and the cpu. So yes, I would definitely advocate for something simpler and less aggressive. - 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
