Messages in this thread | | | From | Grant Coady <> | Subject | 2.4: e100 accounting bust for multiple adapters | Date | Tue, 10 Jan 2006 14:07:55 +1100 |
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Hi there,
While testing for a different issue on a box with two e100 NICs I noticed that interrupt and other accounting are accumulated to the first e100 NIC.
Tested 2.4.(29|30|31|32)-hf32.1 plus 2.4.33-pre1 so the issue has been in there for a while :(
e100 is compiled as module, the problem is not there with 2.6.15.
The problem also goes away if I compile e100 in, tested with 2.4.32-hf32.1
grant@deltree:~$ while true; do egrep 'eth0|eth1' /proc/interrupts; sleep 1; done 11: 3407 XT-PIC eth0 12: 630 XT-PIC eth1 11: 3436 XT-PIC eth0 [same test as below] 12: 921 XT-PIC eth1 11: 3439 XT-PIC eth0 12: 1266 XT-PIC eth1 11: 3443 XT-PIC eth0 12: 1343 XT-PIC eth1 11: 3446 XT-PIC eth0 12: 1343 XT-PIC eth1 11: 3449 XT-PIC eth0 12: 1343 XT-PIC eth1 11: 3456 XT-PIC eth0 12: 1343 XT-PIC eth1
dmesgs + configs on http://bugsplatter.mine.nu/test/boxen/deltree/
Is this a known issue?
Cheers, Grant.
more info: part of http://lkml.org/lkml/2006/1/9/27 -- watching interrupts on eth1, but they're being accumulated to eth0:
grant@deltree:~$ while true; do egrep 'eth0|eth1' /proc/interrupts; sleep 1; done 11: 9136 XT-PIC eth0 \ 12: 4 XT-PIC eth1 | 11: 9516 XT-PIC eth0 > time cat /var/log/apache/access_log 12: 4 XT-PIC eth1 | real 0m1.946s 11: 10146 XT-PIC eth0 | user 0m0.000s 12: 4 XT-PIC eth1 / sys 0m0.200s 11: 10321 XT-PIC eth0 12: 4 XT-PIC eth1
Odd, with 2.4, the two e100 NICs are not being accounted properly:
root@deltree:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:90:27:42:AA:77 inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4840 errors:0 dropped:0 overruns:0 frame:0 TX packets:8825 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:341812 (333.8 Kb) TX bytes:9931009 (9.4 Mb) Interrupt:11 Base address:0xdcc0 Memory:fd201000-fd201038
eth1 Link encap:Ethernet HWaddr 00:90:27:58:32:D4 inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:12 Base address:0xdc80 Memory:fd200000-fd200038
dmesg says: Intel(R) PRO/100 Network Driver - version 2.3.43-k1 Copyright (c) 2004 Intel Corporation
e100: selftest OK. e100: eth0: Intel(R) PRO/100 Network Connection Hardware receive checksums enabled cpu cycle saver enabled
e100: selftest OK. e100: eth1: Intel(R) PRO/100 Network Connection Hardware receive checksums enabled cpu cycle saver enabled
smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov) eth2: SMC Ultra at 0x280, 00 00 C0 5D 46 B5,assigned IRQ 3 memory 0xd0000-0xd3fff. e100: eth0 NIC Link is Up 100 Mbps Full duplex e100: eth1 NIC Link is Up 100 Mbps Full duplex - - -
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