On Thu, Dec 06, 2007 at 05:02:40PM -0600, Chris Friesen wrote: > Andi Kleen wrote: > > >>On a 1.4GHz P4 I measured a 44% increase in latency between a unix > >>datagram and a UDP datagram. > > >That's weird. > > I just reran on a 3.2GHZ P4 running 2.6.11 (Fedora Core 4). 42% latency > increase.
Sounds like something that should be looked into. I know of no principal reasons for that. > For stream sockets, unix gives approximately a 62% bandwidth increase > over tcp. (Although tcp could probably be tuned to do better than this.) How long a stream did you test? You might be measuring slow start. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
