Also, on gigabit NICs, make sure you have a 64-bit PCI bus on the motherboard.
Michael F. DeMan Director of Technology OpenAccess Network Services Bellingham, WA 98225 [EMAIL PROTECTED] 360-647-0785 On Apr 19, 2005, at 1:40 PM, Eivind Hestnes wrote:
Thanks for the advice. Didn't do any difference, though.. Perhaps I should try to increase the polling frequency..
Jerald Von Dipple wrote:
Hey man
You need to bump
kern.polling.burst: 150
Upto at least 150000
Regards, Jerald Von D.
On 4/19/05, Eivind Hestnes <[EMAIL PROTECTED]> wrote:
Hi,
I have an Intel Pro 1000 MT (PWLA8490MT) NIC (em(4) driver 1.7.35) installed
in a Pentium III 500 Mhz with 512 MB RAM (100 Mhz) running FreeBSD 5.4-RC3.
The machine is routing traffic between multiple VLANs. Recently I did a
benchmark with/without device polling enabled. Without device polling I was
able to transfer roughly 180 Mbit/s. The router however was suffering when
doing this benchmark. Interrupt load was peaking 100% - overall the system
itself was quite unusable (_very_ high system load). With device polling
enabled the interrupt kept stable around 40-50% and max transfer rate was
nearly 70 Mbit/s. Not very scientific tests, but it gave me a pin point.
However, a Pentium III in combination with a good NIC should in my opinion
be a respectful router.. but I'm not satisfied with the results. The pf
ruleset is like nothing, and the kernel is stripped and customized for best
performance.
Any tweaking tips for making my router perform better?
Debug information: [EMAIL PROTECTED]:~$ sysctl -a | grep kern.polling kern.polling.burst: 150 kern.polling.each_burst: 5 kern.polling.burst_max: 150 kern.polling.idle_poll: 0 kern.polling.poll_in_trap: 0 kern.polling.user_frac: 50 kern.polling.reg_frac: 20 kern.polling.short_ticks: 1411 kern.polling.lost_polls: 720 kern.polling.pending_polls: 0 kern.polling.residual_burst: 0 kern.polling.handlers: 0 kern.polling.enable: 1 kern.polling.phase: 0 kern.polling.suspect: 186 kern.polling.stalled: 0 kern.polling.idlepoll_sleeping: 1
[EMAIL PROTECTED]:~$ cat /etc/sysctl.conf net.inet.ip.forwarding=1 net.inet.ip.fastforwarding=1 net.inet.carp.preempt=1 kern.polling.enable=1
HZ set to 1000 as recommended in README for the em(4) driver. Driver is of
cource compiled into kernel.
Regards, Eivind Hestnes
_______________________________________________
freebsd-performance@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
_______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
_______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
