Strange Freebsd Router Problem
tvtube blog
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.
TheOne KHan
*
tvtube blog
( that is upload ) .. Thanks every one for advice it will try then post it
here.
TheOne Khan
2009/12/27 Bc. Radek Krejca <ra...@ceskedomeny.cz>
> Hi,
>
> try polling - man polling
>
>
> --
> S pozdravem,
> Bc. Radek Krejca
> ICQ: 65895541
>
>
Julian Elischer
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
>
> *
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