View Full Version : Series 3, 9.3a, usb & kernel backport -- but slow net speeds?

04-19-2008, 09:17 PM
Hey there,

I just moved from 9.2a to 9.3a. Everything seems to have gone well, and I'm using jaime's backport kernel and usb drivers, which gave me 77mbit data transfer speeds on 9.2a.

I've got the ethernet up, I show a MTU of 9000, and so forth.

But, I'm only seeing 20 or so mbit/second.

I just did an "ifconfig eth0 down" -- which removed the broadcom interface leaving only eth1 (the agaiga usb interface). And I'm seeing about 30 mbit.

But neither of these is near close to the 77 mbit that I got with 9.2a.

Has anyone else gotten to this point with 9.3a? Are you seeing faster speeds? (am I missing something really obvious?)

04-19-2008, 09:35 PM
hmm... this might be a "never mind" ... Bandwidth monitor is now indicating about 70mbit. Perhaps Tivo needed to sort itself out a bit after all the rebooting...

04-19-2008, 11:29 PM
I did some quick netperf measurements with 9.3a:

S3 => PC 117 mbps
PC => S3 92 mbps

THD => PC 85 mbps
PC => THD 68 mbps

S3 => THD 60 mbps
THD => S3 70 mbps

This is with the latest backport drivers, AGIGAUSB dongles and jumbo frames with command line netperf -H tohost -- -S 65536 -s 65536. The S3 is running an 8.1 custom kernel (http://www.dealdatabase.com/forum/showthread.php?t=54047). The THD is running a neutered stock 9.3a Gen06 kernel. I got a "TickKiller" kernel crash with the 8.1.7 custom kernel on the THD and haven't taken the time to figure out why. Perhaps it is time to build 9.x custom kernels.