On Fri, 1 Feb 2008 15:34:21 +0100 Andi Kleen <[EMAIL PROTECTED]> wrote:
> > The TSO defer logic is based on your congestion window and current > > window size. So the actual frame sizes hitting your NIC attached to > > your DSL probably aren't anywhere near 64KB, but probably more in line > > with whatever your window size is for DSL. > > DSL windows can be quite large because a lot of DSL lines have a quite > long latency due to error correction. And with ADSL2 we have upto 16Mbit > now. > > > I think we're having more of a disagreement of what is considered the > > "normal case" user. If you are on a slow link, such as a DSL/cable > > line, your TCP window/congestion window aren't going to be big enough to > > generate large TSO's, so what is the issue? But disabling TSO, say on a > > 64k TSOs are likely even with DSL. Anyways even with smaller TSOs the > change still makes sense because each increase makes packet scheduling > less smooth. > > -Andi I wish there was a per-device setting for the max-size of TSO burst. -- Stephen Hemminger <[EMAIL PROTECTED]> -- 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
