ngo Flaschberger wrote:
Dear Paul,
Opteron 2222 UP mode, no polling
input (em0) output
packets errs bytes packets errs bytes colls
1071020 0 66403248 2 0 404 0
that looks good. (but seems to be near the limit).
Yes it is , any more and errors start.
Polling turned on provided better performance on 32 bit, but it gets
strange errors on 64 bit..
Even at low pps I get small amounts of errors, and high pps same
thing.. you would think that if
it got errors at low pps it would get more errors at high pps but
that isn't the case..
Polling on:
packets errs bytes packets errs bytes colls
979736 963 60743636 1 0 226 0
991838 496 61493960 1 0 178 0
996125 460 61759754 1 0 178 0
what could cause this?
*) kern.polling.idle_poll enabled?
*) kern.polling.user_frac ?
*) kern.polling.reg_frac ?
*) kern.polling.burst_max ?
*) kern.polling.each_burst ?
I tried tons of different values for these and nothing made any
significant difference.
Idle polling makes a difference, allows more pps, but still errors.
Without idle polling it seems PPS is limited to HZ * descriptors, or
1000 * 256 or 512
but 1000 * 1024 is the same as 512.. 4000 * 256 or 2000 * 512 works but
starts erroring 600kpps (SMP right now but it happens in UP too)
If anyone wants to log into the box and play with settings, recompile
the kernel, etc. Let me know.
Paul
_______________________________________________
freebsd-net@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
