Date: Sat, 18 Mar 2006 14:45:33 +0100 From: "OxY" <oxy@field.hu> To: <freebsd-net@freebsd.org> Subject: Re: packet drop with intel gigabit / marwell gigabit Message-ID: <001001c64a92$3ab18170$0201a8c0@oxy> References: <000a01c64a81$45eb6850$0201a8c0@oxy> <441BF838.1080600@mac.com><000601c64a87$51d7dee0$0201a8c0@oxy> <441BFF26.90807@mac.com> <000e01c64a8f$1b2bec80$0201a8c0@oxy>
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i increased hz from 2000 to 5000, now the packet loss is decreased from 5-6% to 0.6-0,8% !!! huge improve! should i increase hz more? ----- Original Message ----- From: "OxY" <oxy@field.hu> To: "Chuck Swiger" <cswiger@mac.com> Cc: <freebsd-performance@freebsd.org> Sent: Saturday, March 18, 2006 2:23 PM Subject: Re: packet drop with intel gigabit / marwell gigabit > 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 - > 6 - - > em0 1500 <Link#2> 00:0e:0c:a2:ac:42 68644181 4 66793904 0 > 0 > em0 1500 195.38.96.64/ field 211255811 - > - - > 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 > > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to > "freebsd-performance-unsubscribe@freebsd.org"
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