Since we are discussing this, heres more data ;->
---------- Forwarded message ----------
Date: Wed, 3 Oct 2001 20:42:43 +0200
From: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>
Hello!
Anyway. Uppsala University (35.000 students, 4000 emploees)
has now SMP/NAPI in production.
But reniceed ksoftirqd to -10. Kernel 2.4.10poll SMP.
USER PID %CPU %MEM SIZE RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1224 512 ? S 18:08 0:03 init [5]
root 2 0.0 0.0 0 0 ? SW 18:08 0:00 (keventd)
root 3 74.2 0.0 0 0 ? RW< 18:08 100:02 (ksoftirqd_CPU0)
root 4 73.9 0.0 0 0 ? SW< 18:08 99:39 (ksoftirqd_CPU1)
root 5 0.0 0.0 0 0 ? SW 18:08 0:00 (kswapd)
root 6 0.0 0.0 0 0 ? SW 18:08 0:00 (bdflush)
root 7 0.0 0.0 0 0 ? SW 18:08 0:00 (kupdated)
root 52 0.0 0.0 796 192 ? S 18:08 0:00 voff
root 570 0.3 7.4 38696 38184 ? S 18:08 0:28 /sbin/gated
.
With real data packet load seems to be well distributed.
Plus some CPU TX collisions. :-)
L-uu1:/# cat /proc/net/softnet_stat
076b152d 00002382 076893e2 00000000 00000000 00000000 00000000 00000000 00060511
07678c10 0000247c 076a7e5c 00000000 00000000 00000000 00000000 00000000 00061b88
L-uu1:/# ipchains -L -n | wc -l
465
L-uu1:/# cat /proc/net/drivers/tulip_eth0
eth0: UP Locked MII Full DuplexLink UP
Admin up 2 hour(s) 17 min 6 sec
Last input NOW
Last output NOW
5min RX bit/s 94.5 M
5min TX bit/s 69.2 M
5min RX pkts/s 14981
5min TX pkts/s 13971
5min TX errors 0
5min RX errors 0
5min RX dropped 0
5min TX dropped 0
5min collisions 0
5min RX missed errors 0
NormalIntr 24221027
AbnormalIntr 1
RxIntr 20983232
RxNoBuf 280
RxDied 0
RxJabber 0
TxIntr 15696981
TxDied 0
TxNoBuf 8512291
TimerIntr 0
TotalIntr 23459016 packets-per-int 5
TX-frees in IRQ/xmit 56077416/66612498 TX-queue stop 3731551
Fb: no 0 low 0 mod 0 high 0 drp 0
Poll start start/pkts 1962176135/128376006
Poll exit done/not_done/oom 701671/1961474461/0
Memory allocation failure (small skb) 0
L-uu1:/# cat /proc/interrupts
CPU0 CPU1
0: 412299 413160 IO-APIC-edge timer
1: 80 96 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
8: 0 0 IO-APIC-edge rtc
14: 10791 10371 IO-APIC-edge ide0
15: 18 106 IO-APIC-edge ide1
16: 8568624 8569699 IO-APIC-level eth1
17: 11830639 11830125 IO-APIC-level eth0, eth2
Cheers.
--ro
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