I have been doing some tests with 2.4.19-pre2-ac2 with
regard to network latency. When running a steady stream of
138byte UDP packets at 115 packets per second, I see about
.1% of the packets take more than 5 miliseconds to go from
user-space to user-space on a 1Ghz PIII machine.
At 50Mbps (bi directional), I see a much wider latency spread,
with some packets taking up to 300ms or higher to get from A
to B. The CPU load ranges from about 30% to 80% utilization
at this speed...
I'm running the program at nice -18.
So, what kind of things can I do to decrease the latency?
Would the low-latency patch help me?
Are there any scheduling tricks I can use to tell the kernel
that my program should get to run as soon as it wants to?
Thanks,
Ben
-- Ben Greear <greearb@candelatech.com> <Ben_Greear AT excite.com> President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Mar 07 2002 - 21:00:27 EST