Re: How to Run High Capacity Tor Relays

[Moritz Bartl <tor@xxxxxxxxxxxxxx>]

Hi,

Am 30.08.2010 00:46, schrieb coderman:
> > > As far as ethernet cards, the Intel e1000e *should* be theoretically
> > > good, but they seem to fail at properly irq balancing across multiple
> > > CPUs on recent kernels, which can cause you to bottleneck at 100% CPU
> > > on one core.
> > I think we have finally solved this. At the moment, CPU usage is good and is
> > not limiting throughput (which could be higher though, not sure if the Tor
> > network is saturated?).
> > The key was to enable software Receive Packet Steering (RPS) introduced on
> > kernel 2.6.35. I wrote a small howto: http://bit.ly/aqkDvR
> is there a list of known good cards somewhere?

I wish there was, ie. not that I know of.

> i know there were a few recent kernel upgrade tricks to get the most
> out of the PRO/1000 PT cards on Linux 2.6.30+. perhaps use of sysstat,
> iostat, kprobes, etc. to identify troublespots would be useful. i bet
> there's lots of scattered lore on this among the relay ops...

I'm open to suggestions. Find me on Jabber (or post to list). :-)

Moritz
http://www.torservers.net/