RE: Myrinet 10GE performance on 7.0-CURRENT

Thanks for that. So its showing ~ 600k pps throughput. I'd love to
know whats setting that upper limit - is it iperf? Userspace?
Interrupt thread/device driver? Other kernel stuff?

When measuring using ipef, it is iperf itself with high probability,
as the netperf tool can achieve much better performance on small
packets. I plan to integrate iperf patch mentioned in Linux
kernel list to see if there's any difference.

Petr

_______________________________________________
freebsd-performance@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "freebsd-performance-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Re: Kernel 2.4 vs 2.6 Traffic Controller performance
    ... between kernel 2.4 and 2.6. ... check the idle time of our router to see this. ... Make sure you have the iperf yield fix in place. ... The new clock is finer resolution (at slightly higher overhead), ...
    (Linux-Kernel)
  • Re: b44: regression in 2.6.22 (resend)
    ... I tested this with my 2.6.22-rc3 kernel, ... before I startet the iperf test. ... using netperf in place of iperf in your high res timer on/off testbed? ... command I wrote above. ...
    (Linux-Kernel)
  • RE: Network slowdown due to CFS
    ... or maybe to use a POSIX mutex or POSIX semaphores. ... So it's definitely not a bug in the kernel, ... in this case I think iperf is doing the right thing (though not ... semantics (all threads of equal static priority are scheduled, ...
    (Linux-Kernel)
  • Re: b44: regression in 2.6.22 (resend)
    ... I tested this with my 2.6.22-rc3 kernel, ... Is there any other strange behavior of the high res enabled kernel than ... Timer, but the high ping problem is still there. ... problems using iperf. ...
    (Linux-Kernel)
  • Re: Network slowdown due to CFS
    ... with 2.6.23-rc1, as measured with iperf. ... I did a git bisect today and tracked it back to the commit where CFS ... kernel from ... More majordomo info at http://vger.kernel.org/majordomo-info.html ...
    (Linux-Kernel)