Date: Sat, 26 Dec 2009 14:37:32 -0800 From: Julian Elischer <julian@elischer.org> To: tvtube blog <tvtubeblog@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: Strange Freebsd Router Problem Message-ID: <4B36902C.6010302@elischer.org> In-Reply-To: <8c7234990912260717r2da3f231ne0b07f573fa889b5@mail.gmail.com> References: <8c7234990912260717r2da3f231ne0b07f573fa889b5@mail.gmail.com>
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tvtube blog wrote: > Dear All, > > Now a days I getting a Problem with my 4.11 FreeBSD Router with 3 Gigabits > (bge) Broadcom Ethernet Cards, It was working fine and uses to pass more > then 200 Mbits/s Internet Traffic but now a day not passing more then > 90Mbits/s. Even All cards are have Giga Connectivity. > > I am using ipfw + dummynet for bandwidth Shaping. > > Now what I got using TOP command is very high *81.3% interrupt.* > > 17 processes: 1 running, 16 sleeping > *CPU states: 0.0% user, 0.0% nice, 0.0% system, 81.3% interrupt, 18.8% > idle* > Mem: 6016K Active, 6944K Inact, 48M Wired, 32K Cache, 5888K Buf, 1939M Free > Swap: 240M Total, 240M Free > > PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND > 932 root 28 0 1916K 1212K RUN 0:00 1.61% 0.29% top > 847 root 2 0 5740K 4432K select 0:02 0.00% 0.00% snmpd > 877 root 2 0 5300K 2292K select 0:01 0.00% 0.00% sshd > 880 root 18 0 1328K 980K pause 0:00 0.00% 0.00% csh > 824 root 2 0 2600K 1948K select 0:00 0.00% 0.00% sshd > 813 root 2 0 992K 728K select 0:00 0.00% 0.00% syslogd > 870 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 822 root 10 0 1036K 800K nanslp 0:00 0.00% 0.00% cron > 872 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 871 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 869 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 873 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 866 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 867 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 868 root 3 0 960K 608K ttyin 0:00 0.00% 0.00% getty > 820 root 2 0 1052K 644K select 0:00 0.00% 0.00% inetd > 29 root 18 0 212K 96K pause 0:00 0.00% 0.00% adjkerntz > > ######### netstat -m show every thing good. > > alpha4# netstat -m > 2736/3872/262000 mbufs in use (current/peak/max): > 2736 mbufs allocated to data > 2734/3862/65500 mbuf clusters in use (current/peak/max) > 8692 Kbytes allocated to network (4% of mb_map in use) > 0 requests for memory denied > 0 requests for memory delayed > 0 calls to protocol drain routines > > ### vmstat -z Shows evey thing is good > > ITEM SIZE LIMIT USED FREE REQUESTS > > PIPE: 160, 0, 10, 92, 130 > SWAPMETA: 160, 233016, 0, 0, 0 > unpcb: 160, 0, 1, 49, 21 > ripcb: 192, 65500, 0, 42, 685 > divcb: 192, 65500, 0, 0, 0 > syncache: 160, 15359, 0, 25, 1 > tcpcb: 576, 65500, 4, 10, 4 > udpcb: 192, 65500, 3, 39, 30 > socket: 224, 65500, 8, 28, 773 > KNOTE: 64, 0, 0, 128, 3 > DIRHASH: 1024, 0, 30, 6, 30 > NFSNODE: 352, 0, 0, 0, 0 > NFSMOUNT: 544, 0, 0, 0, 0 > VNODE: 192, 0, 1128, 38, 1128 > NAMEI: 1024, 0, 0, 16, 14184 > VMSPACE: 192, 0, 18, 46, 926 > PROC: 416, 0, 29, 20, 942 > DP fakepg: 64, 0, 0, 0, 0 > PV ENTRY: 28, 2276416, 11662, 510146, 200115 > MAP ENTRY: 48, 0, 381, 172, 29674 > KMAP ENTRY: 48, 57551, 87, 126, 3393 > MAP: 108, 0, 7, 3, 7 > VM OBJECT: 92, 0, 551, 101, 13873 > > > Please advice me what to do or how to decrease this *81.3% interrupt. > > Thanks in advance. It sounds as if the nature of the traffic has changed. maybe the average packet size has shrunk. I presume that the software has not changed for a long time because 4.11, thougha wonderful release, is ANCIENT. :-) have you tried profiling the traffic. You could use ipfw to count packets by size (see the iplen parameter) or you could use trafshow or wireshark. > > TheOne KHan > > * > _______________________________________________ > 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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