On Tue, Oct 02, 2007 at 09:47:26AM -0700, Stephen Hemminger wrote: > On Tue, 2 Oct 2007 09:25:34 -0700 > [EMAIL PROTECTED] (Larry McVoy) wrote: > > > > If the server side is the source of the data, i.e, it's transfer is a > > > write loop, then I get the bad behaviour. > > > ... > > > So is this a bug or intentional? > > > > For whatever it is worth, I believed that we used to get better performance > > from the same hardware. My guess is that it changed somewhere between > > 2.6.15-1-k7 and 2.6.18-5-k7. > > For the period from 2.6.15 to 2.6.18, the kernel by default enabled TCP > Appropriate Byte Counting. This caused bad performance on applications that > did small writes.
It's doing 1MB writes. Is there a sockopt to turn that off? Or /proc or something? -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com - 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
