Date: Sat, 18 Mar 2006 14:23:12 +0100 From: "OxY" <oxy@field.hu> To: "Chuck Swiger" <cswiger@mac.com> Cc: freebsd-performance@freebsd.org Subject: Re: packet drop with intel gigabit / marwell gigabit Message-ID: <000e01c64a8f$1b2bec80$0201a8c0@oxy> References: <000a01c64a81$45eb6850$0201a8c0@oxy> <441BF838.1080600@mac.com> <000601c64a87$51d7dee0$0201a8c0@oxy> <441BFF26.90807@mac.com>
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currently i use HZ=2000 here's the output of netstat -i, -s, and vmstat -i : (currently i am uploading on the gigabit with ftp, 3 threads) Field root# vmstat -i interrupt total rate irq0: clk 27503959 1993 irq1: atkbd0 1 0 irq3: fxp0 2 0 irq7: 146 0 stray irq7 146 0 irq8: rtc 1765569 127 irq10: atapci1 2807786 203 irq11: atapci0 475039 34 irq13: npx0 1 0 irq14: ata0 99 0 Total 32552748 2359 Field root# netstat -i Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll fxp0 1500 <Link#1> 00:a0:c9:8d:79:68 13163545 0 21899372 1 0 fxp0 1500 195.38.96.64/ field 141 - 22056 - - em0 1500 <Link#2> 00:0e:0c:a2:ac:42 68644181 4 66793904 0 0 em0 1500 195.38.96.64/ field 211255811 - 3903 - - lo0 16384 <Link#3> 129622061 0 129622061 0 0 netstat -s is here: http://field.hu/netstat.txt ----- Original Message ----- From: "Chuck Swiger" <cswiger@mac.com> To: "OxY" <oxy@field.hu> Cc: <freebsd-performance@freebsd.org> Sent: Saturday, March 18, 2006 1:37 PM Subject: Re: packet drop with intel gigabit / marwell gigabit > 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 > > -- > -Chuck
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