* Olaf Kirch <[email protected]> wrote:
> - You say that netconsole output continues to trickle after
> the network gets wedged. This could be caused by the
> e1000 watchdog, which triggers a NIC interrupt "to ensure
> rx ring is cleaned". I assume that this triggers the
> regular e1000_intr, which succeeds in putting the NIC on
> the poll_list, and net_rx_action call dev->poll once.
no - it appears that 'trickle' only happened with one of your patches
(to which i replied with that 'trickle' mail). With what i have booted
now (only your original patch and nothing else, 100 Hz and !dynticks),
netconsole output stopped here:
Calling initcall 0xc0603f55: netpoll_init+0x0/0x39()
initcall 0xc0603f55: netpoll_init+0x0/0x39() returned 0.
initcall 0xc0603f55 ran for 0 msecs: netpoll_init+0x0/0x39()
Calling initcall 0xc0604257: netlink_proto_init+0x0/0x12a()
NET: Registered protocol family 16
and no output ever since - and the box has been up for a few minutes.
> So, can you verify whether there are any interrupts arriving on the
> NIC after the network got wedged? You could also try ethtool -s eth0
> msglevel 65535 - would be interesting to see what dmesg contains. If
> there's little to no debug output from the driver, let it run for 10
> seconds or so, in order to catch the e1000 watchdog timer a few times.
eth0's irq count is stuck at 5 interrupts - and has not changed for
minutes.
i tried ethtool -s eth0 msglvl 65535, but (sa expected) there's no
output. I've attached below ifconfig output and ethtool -S output -
maybe that tells you something new about the state of eth0. (to me it
only tells what we already know: tx timed out once and eth0 is stuck
ever since.)
Btw., i definitely need your help with this bug as it's now hopelessly
out of my league :-/
Ingo
------------------>
eth0 Link encap:Ethernet HWaddr 00:16:41:17:49:D2
inet addr:10.0.1.15 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:873 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:87076 (85.0 KiB)
Base address:0x2000 Memory:ee000000-ee020000
NIC statistics:
rx_packets: 0
tx_packets: 873
rx_bytes: 0
tx_bytes: 87076
rx_broadcast: 0
tx_broadcast: 0
rx_multicast: 0
tx_multicast: 0
rx_errors: 0
tx_errors: 0
tx_dropped: 0
multicast: 0
collisions: 0
rx_length_errors: 0
rx_over_errors: 0
rx_crc_errors: 0
rx_frame_errors: 0
rx_no_buffer_count: 0
rx_missed_errors: 0
tx_aborted_errors: 0
tx_carrier_errors: 0
tx_fifo_errors: 0
tx_heartbeat_errors: 0
tx_window_errors: 0
tx_abort_late_coll: 0
tx_deferred_ok: 0
tx_single_coll_ok: 0
tx_multi_coll_ok: 0
tx_timeout_count: 1
tx_restart_queue: 0
rx_long_length_errors: 0
rx_short_length_errors: 0
rx_align_errors: 0
tx_tcp_seg_good: 0
tx_tcp_seg_failed: 0
rx_flow_control_xon: 0
rx_flow_control_xoff: 0
tx_flow_control_xon: 0
tx_flow_control_xoff: 0
rx_long_byte_count: 0
rx_csum_offload_good: 0
rx_csum_offload_errors: 0
rx_header_split: 0
alloc_rx_buff_failed: 0
tx_smbus: 0
rx_smbus: 0
dropped_smbus: 0
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