Hello!
I'm using FreeBSD 8.1-RELEASE-p8 with ipfw and dummynet in kernel (i386).
Periodically (like every 15-30 minutes) dummynet uses CPU heavily for another 10-15 minutes, and then drops down:
The CPU usage can vary from 0,10% to 80%...
How to check what is the cause of this dummynet behaviour?
Ruleset doesn't change, it consists of about 2000 pipes.
Sometimes I get this when I try to list pipes:
My sysctl settings:
Any help would be appreciated, thanks!
I'm using FreeBSD 8.1-RELEASE-p8 with ipfw and dummynet in kernel (i386).
Periodically (like every 15-30 minutes) dummynet uses CPU heavily for another 10-15 minutes, and then drops down:
Code:
last pid: 37662; load averages: 0.71, 1.38, 1.65 up 3+18:28:24 12:30:50
169 processes: 6 running, 132 sleeping, 5 zombie, 26 waiting
CPU 0: 0.0% user, 0.0% nice, 32.3% system, 35.5% interrupt, 32.3% idle
CPU 1: 30.0% user, 0.0% nice, 20.0% system, 0.0% interrupt, 50.0% idle
CPU 2: 10.0% user, 0.0% nice, 6.7% system, 0.0% interrupt, 83.3% idle
CPU 3: 0.0% user, 0.0% nice, 41.9% system, 0.0% interrupt, 58.1% idle
Mem: 81M Active, 804M Inact, 307M Wired, 61M Cache, 112M Buf, 703M Free
Swap: 3983M Total, 1140K Used, 3982M Free
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 171 ki31 0K 32K RUN 2 71.8H 85.55% {idle: cpu2}
11 root 171 ki31 0K 32K CPU1 1 63.8H 71.97% {idle: cpu1}
[color="Red"] 0 root -68 0 0K 104K - 3 18.4H 68.75% {dummynet}[/color]
11 root 171 ki31 0K 32K CPU0 0 36.2H 41.99% {idle: cpu0}
0 root -68 0 0K 104K - 0 30.8H 41.31% {em0 taskq}
12 root -68 - 0K 208K WAIT 0 38.0H 33.11% {irq257: em1}
11 root 171 ki31 0K 32K RUN 3 70.1H 29.20% {idle: cpu3}
80850 andrzej 44 0 9428K 3580K select 0 0:37 0.49% sshd
94196 root 44 0 19532K 12904K select 1 0:05 0.39% pmacctd
94195 root 45 0 11420K 6260K bpf 2 0:08 0.24% pmacctd
12 root -68 - 0K 208K WAIT 0 30:18 0.10% {irq258: em1}
Code:
last pid: 71798; load averages: 1.02, 0.82, 0.89 up 3+18:55:56 12:58:22
168 processes: 6 running, 131 sleeping, 5 zombie, 26 waiting
CPU 0: 0.9% user, 0.0% nice, 26.5% system, 34.5% interrupt, 38.1% idle
CPU 1: 19.5% user, 0.0% nice, 19.5% system, 0.0% interrupt, 61.1% idle
CPU 2: 10.6% user, 0.0% nice, 8.0% system, 0.0% interrupt, 81.4% idle
CPU 3: 5.4% user, 0.0% nice, 3.6% system, 0.0% interrupt, 91.1% idle
Mem: 82M Active, 806M Inact, 285M Wired, 32M Cache, 112M Buf, 749M Free
Swap: 3983M Total, 104K Used, 3983M Free
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 171 ki31 0K 32K CPU3 3 70.5H 94.87% {idle: cpu3}
11 root 171 ki31 0K 32K CPU2 2 72.2H 83.59% {idle: cpu2}
11 root 171 ki31 0K 32K RUN 1 64.1H 67.24% {idle: cpu1}
0 root -68 0 0K 104K CPU0 0 31.0H 46.53% {em0 taskq}
11 root 171 ki31 0K 32K RUN 0 36.4H 43.90% {idle: cpu0}
12 root -68 - 0K 208K WAIT 0 38.1H 34.28% {irq257: em1}
[color="red"] 0 root -68 0 0K 104K - 2 18.5H 1.42% {dummynet}[/color]
94196 root 45 0 19532K 13776K select 3 0:47 0.98% pmacctd
80850 andrzej 44 0 9428K 3580K select 3 0:55 0.63% sshd
73174 andrzej 44 0 9428K 3596K select 1 2:31 0.34% sshd
94195 root 46 0 11420K 6260K bpf 1 1:15 0.24% pmacctd
12 root -68 - 0K 208K WAIT 0 30:27 0.10% {irq258: em1}The CPU usage can vary from 0,10% to 80%...
How to check what is the cause of this dummynet behaviour?
Ruleset doesn't change, it consists of about 2000 pipes.
Sometimes I get this when I try to list pipes:
Code:
opole# ipfw pipe show
ipfw: invalid oid len 0My sysctl settings:
Code:
opole# sysctl net.inet.ip.dummynet
net.inet.ip.dummynet.io_pkt_drop: 53597229
net.inet.ip.dummynet.io_pkt_fast: 3086456673
net.inet.ip.dummynet.io_pkt: 2114587167
net.inet.ip.dummynet.queue_count: 0
net.inet.ip.dummynet.fsk_count: 1850
net.inet.ip.dummynet.si_count: 710
net.inet.ip.dummynet.schk_count: 3700
net.inet.ip.dummynet.tick_lost: 0
net.inet.ip.dummynet.tick_diff: 4726128
net.inet.ip.dummynet.tick_adjustment: 4906976
net.inet.ip.dummynet.tick_delta_sum: 169
net.inet.ip.dummynet.tick_delta: 500
net.inet.ip.dummynet.red_max_pkt_size: 1500
net.inet.ip.dummynet.red_avg_pkt_size: 512
net.inet.ip.dummynet.red_lookup_depth: 256
net.inet.ip.dummynet.expire_cycle: 0
net.inet.ip.dummynet.expire: 1
net.inet.ip.dummynet.debug: 0
net.inet.ip.dummynet.io_fast: 1
net.inet.ip.dummynet.pipe_byte_limit: 1048576
net.inet.ip.dummynet.pipe_slot_limit: 100
net.inet.ip.dummynet.hash_size: 2048Any help would be appreciated, thanks!