packet drop with intel gigabit / marwell gigabit

Chuck Swiger cswiger at
Sat Mar 18 12:38:00 UTC 2006

OxY wrote:
> yeah, i googled these settings, but i put them back to default then!
> i measured iperf performance, and it showed that the packet drop is
> depending on the system load..

If you are using the normal interrupt-driven configuration, you should look at
netstat -i, -s, and vmstat -i.  If you're turning on device polling, you ought
to retry your testing at higher HZ (try 2000 or 5000):

   echo 'kern.hz="2000"' >> /boot/loader.conf


More information about the freebsd-performance mailing list