Thanks for all the answers, but the problem still exists.
To sum up:
OpenBSD 4.8 default install
cpu0: Intel(R) Celeron(R) CPU 2.80GHz ("GenuineIntel" 686-class) 2.80 GHz
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
em0 at pci1 dev 0 function 0 "Intel PRO/1000 PT (82572EI)" rev 0x06:
apic 1 int 16 (irq 5), address XX:XX:XX:XX:XX:XX
1.
- tcp send and receive window @ default
- pf disabled
- transfer speed on em0 tested by iperf: 458 Mbits/sec
- top shows:
load averages: 0.90, 0.42, 0.18
25 processes: 1 running, 23 idle, 1 on processor
CPU states: 0.6% user, 0.0% nice, 51.5% system, 33.5% interrupt, 14.4%
idle
Memory: Real: 9164K/43M act/tot Free: 442M Swap: 0K/759M used/tot
2.
- tcp send and receive window: 131072
- pf disabled
- transfer speed on em0 tested by iperf: 767 Mbits/sec
- top shows:
load averages: 0.85, 0.56, 0.29
25 processes: 1 running, 23 idle, 1 on processor
CPU states: 1.6% user, 0.0% nice, 71.5% system, 26.9% interrupt, 0.0%
idle
Memory: Real: 9172K/43M act/tot Free: 442M Swap: 0K/759M used/tot
3.
- tcp send and receive window: 131072
- pf enabled, no queue
- transfer speed on em0 tested by iperf: 677 Mbits/sec
- top shows:
load averages: 0.84, 0.58, 0.38
25 processes: 1 running, 23 idle, 1 on processor
CPU states: 1.4% user, 0.0% nice, 70.1% system, 28.5% interrupt, 0.0%
idle
Memory: Real: 9184K/44M act/tot Free: 441M Swap: 0K/759M used/tot
4.
- tcp send and receive window: 131072
- pf enabled
- to default pf.conf added (as Joel Sing suggested qlimit changed from
50 to 500):
altq on em0 cbq bandwidth 1Gb qlimit 500 queue { q_lan }
queue q_lan bandwidth 950Mb qlimit 500 cbq (default)
- transfer speed on em0 tested by iperf: 337 Mbits/sec
- top shows:
load averages: 0.94, 0.68, 0.45
25 processes: 1 running, 23 idle, 1 on processor
CPU states: 0.6% user, 0.0% nice, 79.4% system, 20.0% interrupt, 0.0%
idle
Memory: Real: 9184K/44M act/tot Free: 441M Swap: 0K/759M used/tot
r...@router-test (/root)# systat queue
2 users Load 0.69 0.58 0.48 Wed Nov 17 21:34:38 2010
QUEUE BW SCH PR PKTS BYTES DROP_P DROP_B QLEN BORR SUSP
P/S B/S
root_em0 1000M cbq 0 1803K 2666M 0 0 0 0 0
293 44M
q_lan 950M cbq 1803K 2666M 0 0 0 0 0
293 44M
r...@router-test (/root)# pfctl -vvs queue (transfer starts slowly, then
at best time transfer is 322.11Mb/s than drops - i dont know is it a
proper behaviour)
queue root_em0 on em0 bandwidth 1Gb priority 0 qlimit 500 cbq( wrr root
) {q_lan}
[ pkts: 4372637 bytes: 6619141152 dropped pkts: 0 bytes:
0 ]
[ qlength: 0/500 borrows: 0 suspends: 0 ]
[ measured: 26598.4 packets/s, 322.11Mb/s ]
queue q_lan on em0 bandwidth 950Mb qlimit 500 cbq( default )
[ pkts: 4372637 bytes: 6619141152 dropped pkts: 0 bytes:
0 ]
[ qlength: 0/500 borrows: 0 suspends: 0 ]
[ measured: 26598.4 packets/s, 322.11Mb/s ]
best regards,
RLW
