Date: Wed, 26 Apr 2006 17:32:57 -0300 (BRT) From: tpeixoto@widesoft.com.br To: mihai@duras.ro Cc: Lee Johnston <lee@wildcard.net.uk>, freebsd-net@freebsd.org Subject: Re: Packet loss with traffic shaper and routing Message-ID: <59615.200.230.201.250.1146083577.squirrel@www.widemail.com.br> In-Reply-To: <1146073590.1089.80.camel@sky.mediasat.ro> References: <49594.200.230.201.250.1146063341.squirrel@www.widemail.com.br> <444F8E89.2050905@wildcard.net.uk> <56286.200.230.201.250.1146067775.squirrel@www.widemail.com.br> <1146073590.1089.80.camel@sky.mediasat.ro>
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Hello. I did that and compiled the kernel. Then I restarted the system and enabled sysctl kern.polling.enable=1 It seems that it has no effect in the system. Maybe bge driver doesn't like polling? At this moment, I'm getting more than 50% interrupts and 20% packets lost. I also disabled HT in BIOS and the interrupts are now passing 80% mark. Don't know what else to do. Aren't these cards supposed to work at 100Mbits or 1Gbit? They are failing with 12Mbits traffic on a 100Mbits LAN. Something is wrong and I am having a hard time trying to identify the problem. Thanks for the hints, anything else would be greatly appreciated. > Then try commenting these out: > > #ifdef SMP > #ifndef COMPILING_LINT > #error DEVICE_POLLING is not compatible with SMP > #endif > #endif > > > It should compile with both SMP and POLLING. > > > On Wed, 2006-04-26 at 13:09 -0300, tpeixoto@widesoft.com.br wrote: >> Hi Lee, >> >> I got excited, but... surprise! >> >> ../../../kern/kern_poll.c:46:2: #error DEVICE_POLLING is not compatible >> with SMP >> mkdep: compile failed >> *** Error code 1 >> >> :( >> >> Thanks anyway! >> >> >> > Hi, >> > >> > Try using device polling to reduce the number of interrupts. >> > >> > Add this to your kernel: >> > options DEVICE_POLLING >> > options HZ=1000 >> > >> > And set sysctl kern.polling.enable=1 >> > >> > Hope this helps, >> > >> > Regards, >> > Lee. >> > >> > >> > >> > >> > >> > tpeixoto@widesoft.com.br wrote: >> >> Hello all! >> >> >> >> We have a machine working as a router and bandwidth limiter for our >> >> network. It routes the traffic through two 'bge' interfaces utilizing >> >> only >> >> public IPs. No NAT is used. We only have IPFW rules for traffic >> shaping >> >> by >> >> MAC addresses. >> >> It works fine, but we have been experiencing high latency and packet >> >> loss. >> >> There is no other major services in this machine, cpu utilization is >> >> low, >> >> memory is fine, no disk activity, but load average is always around >> 1.5 >> >> or >> >> 2, even if I disable IPFW layer 2 filtering. >> >> Network traffic is not greater than 12 Mbit/s. >> >> >> >> The system is a FreeBSD 5.4-RELEASE, running on a dual CPU: Intel(R) >> >> Xeon(TM) CPU 3.06GHz (3051.47-MHz 686-class CPU) compiled with SMP >> >> kernel: >> >> cpu0 (BSP): APIC ID: 0 >> >> cpu1 (AP): APIC ID: 1 >> >> cpu2 (AP): APIC ID: 6 >> >> cpu3 (AP): APIC ID: 7 >> >> >> >> >> >> top output: >> >> >> >> last pid: 14039; load averages: 1.61, 1.62, 1.56 >> >> 37 processes: 1 running, 35 sleeping, 1 zombie >> >> CPU states: 0.0% user, 0.0% nice, 1.4% system, 30.8% interrupt, >> 67.8% >> >> idle >> >> Mem: 16M Active, 421M Inact, 149M Wired, 688K Cache, 112M Buf, 1417M >> >> Free >> >> Swap: 1024M Total, 1024M Free >> >> >> >> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU >> >> COMMAND >> >> 6245 root 96 0 2672K 2236K select 2 3:48 0.00% 0.00% >> >> dhcpd >> >> 329 root 96 0 1328K 892K select 0 2:48 0.00% 0.00% >> >> syslogd >> >> 453 root 96 0 3384K 2508K select 2 0:33 0.00% 0.00% >> sshd >> >> >> >> >> >> >> >> >> >> systat -iostat output: >> >> >> >> /0 /1 /2 /3 /4 /5 /6 /7 /8 /9 >> >> /10 >> >> Load Average |||||||||| >> >> >> >> /0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100 >> >> cpu user| >> >> nice| >> >> system| >> >> interrupt|XXXXXXXXXXXXXXXXX >> >> idle|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX >> >> >> >> /0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100 >> >> da0 MB/s >> >> tps|X >> >> pass0 MB/s >> >> tps| >> >> >> >> >> >> Can anyone give me some advice? >> >> Thank you in advance! >> >> >> >> >> >> _______________________________________________ >> >> freebsd-net@freebsd.org mailing list >> >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> >> To unsubscribe, send any mail to >> "freebsd-net-unsubscribe@freebsd.org" >> >> >> >> >> >> >> > >> > >> > -- >> > ------------------------------------------------------------------------ >> > Wildcard Internet - end-to-end internet solutions >> > Lee Johnston - Wildcard Internet >> > Tel: 0845 165 1510 >> > Fax: 0845 165 1511 >> > Email: lee@wildcard.net.uk <mailto:lee@wildcard.net.uk> >> > Web: www.wildcard.net.uk <http://www.wildcard.net.uk>; >> > >> > >> >> >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > >
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