Hi all,
I'm running Debian Lenny 64-bit (kernel 2.6.26, e1000e version
0.3.3.3-k2) on a couple of routers which are dropping an alarming number
of packets, and wondered if I could consult the list about it?
The machines are good quality HP DL320 G5's each with two dual-port
PCI-e x4 82571EB cards, so 4 x 82571EB ports in total on eth0 -> eth3
(plus 2 on board eth4,eth5 for management)
eth2 + eth3 are part of 'bond1'
cor4:~# ethtool -S eth2 | grep -v ": 0"
NIC statistics:
rx_packets: 276763917957
tx_packets: 471895773086
rx_bytes: 342602999180888
tx_bytes: 588662613526252
rx_broadcast: 132740615
tx_broadcast: 29
rx_multicast: 63675224
tx_multicast: 1398527
rx_errors: 83
multicast: 63675224
rx_crc_errors: 83
rx_missed_errors: 2427853215
tx_restart_queue: 200354
rx_long_byte_count: 342602999180888
rx_csum_offload_good: 276600305105
rx_csum_offload_errors: 21438
rx_missed_errors is rising by thousands of packets per second; the RX
ring size was 256 bytes - I increased it to 2048 but it has made no
difference.
The machine is doing a large amount of network I/O - eth2 + eth3 each
average 500Mbps/50k pps on both rx+tx.
13:06:51 up 424 days, 21:12, 3 users, load average: 0.05, 0.14, 0.10
My research so far suggests that rx_missed_errors could be as a result
of inadequate bus bandwidth... the NICs seem to be configured correctly
for optimum usage:
1269:1523052557 1520343556 1579949975 1579235679 PCI-MSI-edge eth3
1270:4254381790 4256595268 4153628417 4154259718 PCI-MSI-edge eth2
1271: 193042289 193698664 192770825 192359423 PCI-MSI-edge eth1
1272:3932743448 3931616894 3976527168 3976601952 PCI-MSI-edge eth0
External link to preserve the ASCII formatting:
http://194.24.251.10/lspci-vv.txt
... from my rudimentary reading, it seems to be OK.. Capabilities: [d0]
Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
Interrupts and context-switches are remarkably low:
cor4:~# vmstat 1
procs -----------memory---------- ---swap-- -----io---- -system--
----cpu----
r b swpd free buff cache si so bi bo in cs us sy
id wa
0 0 60 1057408 164120 331416 0 0 0 0 0 0 1 4
95 0
0 0 60 1056608 164120 331440 0 0 0 0 14639 1065 1
13 86 0
0 0 60 1056956 164120 331440 0 0 0 0 15794 1216 2
15 83 0
0 0 60 1056980 164120 331440 0 0 0 0 13741 920 2
6 92 0
0 0 60 1056980 164120 331440 0 0 0 0 18241 953 2
9 89 0
0 0 60 1056748 164120 331440 0 0 0 0 13219 1374 5
15 80 0
Neither eth0 nor eth1 providing bond0 (much lower traffic) are dropping
any packets.
Any advice warmly welcomed! :)
gdh
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