On Thu, Dec 15, 2005 at 08:35:32PM -0500, Bill Fink wrote: > On Fri, 16 Dec 2005, Andi Kleen wrote: > > > > It appears that it is getting CPU starved for some reason (note the > > > 43%/40% transmitter CPU usage versus the 99%/99% CPU usage for the > > > 2.6.12.6 case). > > > > What happens when you turn off tso in ethtool? > > Thanks!!! That did the trick.
TSO is still a bit of work in progress. The old 2.6.12 TSO code actually ignored the congestion window and was illegal in benchmarks etc (and might have even been dangerous to the internet). That was fixed, but performance still didn't fully recover. It's a tricky problem. -Andi - 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
