From: Eric Dumazet <[EMAIL PROTECTED]> Date: Wed, 07 Dec 2005 23:04:04 +0100
> Another try could be to do some benchmarks about NET_IP_ALIGN being a valid > optimization nowadays : > Maybe setting it to 0 in e1000 driver could give better results. > Could somebody give it a try ? NET_IP_ALIGN is a two-folded thing: 1) Getting IP headers aligned 2) Getting good DMA strides (this is why ppc sets it to zero). So, keep that in mind. On x86 you won't get the unaligned traps, but on other platforms you will and I know that the ia64 folks will get a couple megabytes of unaligned memory access trap kernel logs when their machine boots and will rightfully scream bloody murder as a result. So you can set it to zero if you want on x86 systems, but even there I really don't recommend it. - 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
