Hi!
I have two pfSense boxes connected to the same net segment where we have
4-10Mb/s (up to 5kps) stream of small udp multicast packets.
pfSense1 is connected to this segment via VLAN (em3) - this pfSense is
overloaded.
pfSense2 is connected to this segment via LAN interface (em0) - this
pfSense is ok.
I am not very good at FreeBSD internals so my question is why do I have
that drastic difference in performance. Basically all em3's load is
caused by this udp stream because if it stops the load goes to normal
'almost 100% free'. Is VLAN tagging affecting performance that bad?
---- pfSense1 -----
last pid: 7245; load averages: 0.20, 0.28, 0.31 up 0+05:23:40
15:20:24
105 processes: 5 running, 81 sleeping, 19 waiting
CPU: 0.2% user, 0.0% nice, 6.5% system, 0.2% interrupt, 93.2% idle
Mem: 52M Active, 32M Inact, 58M Wired, 308K Cache, 24M Buf, 3365M Free
Swap: 8192M Total, 8192M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
13 root 1 171 ki31 0K 8K CPU1 1 315:09 100.00% idle:
cpu1
11 root 1 171 ki31 0K 8K CPU3 3 312:52 100.00% idle:
cpu3
12 root 1 171 ki31 0K 8K CPU2 2 282:52 96.29% idle: cpu2
14 root 1 171 ki31 0K 8K RUN 0 231:47 84.38% idle: cpu0
34 root 1 -68 - 0K 8K - 0 90:24 16.26% em3 taskq
31 root 1 -68 - 0K 8K - 2 36:51 7.28% em0 taskq
29 root 1 8 - 0K 8K - 3 9:19 1.37% thread
taskq
32 root 1 -68 - 0K 8K - 0 1:35 1.17% em1 taskq
37 root 1 -68 - 0K 8K WAIT 2 1:42 0.10% irq25:
bge0
18 root 1 44 - 0K 8K - 2 0:48 0.00% yarrow
16 root 1 -32 - 0K 8K WAIT 3 0:46 0.00% swi4:
clock s
3633 root 1 4 0 46120K 20760K accept 1 0:27 0.00% php
33 root 1 -68 - 0K 8K - 2 0:22 0.00% em2 taskq
----- pfSesnse2 -----
last pid: 84582; load averages: 0.15, 0.18, 0.16 up 1+22:51:13
15:20:24
92 processes: 5 running, 65 sleeping, 22 waiting
CPU states: 0.3% user, 0.0% nice, 0.3% system, 2.4% interrupt, 97.0%
idle
Mem: 32M Active, 11M Inact, 39M Wired, 19M Buf, 3426M Free
Swap: 8192M Total, 8192M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
10 root 1 171 52 0K 8K CPU3 0 0:00 99.02% idle: cpu3
12 root 1 171 52 0K 8K CPU1 0 0:00 99.02% idle: cpu1
13 root 1 171 52 0K 8K RUN 0 45.3H 93.36% idle: cpu0
11 root 1 171 52 0K 8K CPU2 2 43.0H 86.28% idle: cpu2
14 root 1 -44 -163 0K 8K WAIT 2 65:26 9.47% swi1: net
29 root 1 -68 -187 0K 8K WAIT 2 7:20 0.68% irq65: em3
25 root 1 -68 -187 0K 8K WAIT 0 5:14 0.05% irq39: em0
1144 root 1 4 0 6048K 5408K kqread 0 1:35 0.05% lighttpd
81785 root 1 4 0 15896K 13324K accept 0 0:04 0.05% php
15 root 1 -32 -151 0K 8K WAIT 0 4:58 0.00% swi4:
clock s
33 root 1 -64 -183 0K 8K WAIT 0 2:54 0.00% irq19:
uhci1
30 root 1 -64 -183 0K 8K WAIT 2 1:45 0.00% irq16:
uhci0
26 root 1 -68 -187 0K 8K WAIT 2 1:41 0.00% irq36: em1
Thank you!
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