At Wed, 11 Jun 2008 09:51:27 -0700, security wrote: > > Steve Bertrand wrote: > > Hi everyone, > > > > I see what I believe to be less-than-adequate communication > > performance between many devices in parts of our network. > > > > Can someone recommend software (and config recommendations if > > possible) that I can implement to test both throughput and pps > > reliably, initially/primarily in a simple host-sw-host configuration? > > > > Perhaps I'm asking too much, but I'd like to have something that can > > push the link to it's absolute maximum capacity (for now, up to 1Gbps) > > for a long sustained time, that I can just walk away from and let it > > do it's work, and review the reports later where it had to scale down > > due to errors. > > > > What I'm really trying to achieve is: > > > > - test the link between hosts alone > > - throw in a switch > > - test the link while r/w to disk > > - test the link while r/w to GELI disk > > - test the link with oddball MTU sizes > > > Iperf or netperf are probably what you're looking for. Both try real > had NOT to tweak other subsystems while they run, so if you want to > throw disk activity in, you'll need to run another tool or roll your own > to create disk activity. You probably don't want to run them for > extended periods in a production network. Depending on the adapters at > each end, you may or may not be able to drive the link to saturation or > alter frame size. The Intel adapters I've seen allow jumbo frames, and > generally good performance (as opposed to say the realtek). It's also > useful to have a managed switch in between so you can look at the > counters on it. >
I personally prefer netpipe because it tries odd sized (non power of 2) messages and tends to help edge cases come to light. /usr/ports/benchmarks/netpipe Later, George _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
