just to clarify - bios redirected console output seems to leave interrupts disabled unnecessarily or fails to eoi early.
On 6/28/2007 at 8:54 PM Don Lashier wrote: >Is there anything happening on the serial console? I'm in a totally >different environment but find that any output on the serial is a >killer on other interrupts. With nothing happening on the serial I >can comfortably sustain ~64mbs (UDP, 32 in, 32 out). > >- Don > >On 6/29/2007 at 11:50 AM Jonathon Exley wrote: > >>Is anyone out there using iperf to test Ethernet circuits on a 4801? >>I find that I can't do bidirectional UDP tests above 4Mbit/s for >>prolonged periods (like 900s). >>The test runs ok for a while and then I get bursts of packet loss every >>60s or so. >>I'm running Debian Sarge with a custom compiled 2.6.20.1 kernel as per >>Brix Andersen's paper. >>For some reason the Debian 2.6.8 kernel performs better - 10Mbit/s for >>900s is ok, at 20Mbit/s I start getting errors. >>Maybe it's a feature of 2.6.20.1? or perhaps the interrrupt algorithm I >>chose (CONFIG_DEFAULT_IOSCHED="anticipatory"). >>What sort of rates can other people get out of iperf? >>The command I used was: iperf -c <host> -u -d -i5 -b4m -t900 >> >>Jonathon ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Don Lashier [EMAIL PROTECTED] Newport Internet www.newportnet.com ~~~~~~~~~ Just say NO to HTML email ~~~~~~~~ _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
