wwguy wrote at 21:30:47
> When the problem happen, could you please dump the tx_queue status in
> debugfs and send us the information
>
> In order to dump the the tx_queue, please do the following
> 1. make sure you compile your kernel with CONFIG_IWLWIFI_DEBUGFS=y
> 2. unload and reload the "iwlagn" module
> 3. cd to /sys/kernel/debug/ieee80211/phyX/iwlwifi/debug (phX: "X" based
> on your system)
> 4. "$sudo cat tx_queue" to show the current tx queue status
There was an outage 15 min ago, however the network was automatically restarted, therefore not sure whether it is related to the initial reported problem
or not :
tfoerste@n22 ~/tmp $ sudo cat /sys/kernel/debug/ieee80211/phy0/iwlagn/debug/tx_queue
hwq 00: read=182 write=182 stop=0 swq_id=0x00 (ac 0/hwq 0)
stop-count: 0
hwq 01: read=0 write=0 stop=0 swq_id=0x05 (ac 1/hwq 1)
stop-count: 0
hwq 02: read=137 write=137 stop=0 swq_id=0x0a (ac 2/hwq 2)
stop-count: 0
hwq 03: read=7 write=7 stop=0 swq_id=0x0f (ac 3/hwq 3)
stop-count: 0
hwq 04: read=116 write=116 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 05: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 06: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 07: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 08: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 09: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 10: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 11: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 12: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 13: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 14: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 15: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 16: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 17: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 18: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 19: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
/var/log/messages gave :
2011-10-19T12:30:01.000+02:00 n22 cron[8068]: (root) CMD (/usr/lib/sa/sa2 -A >/dev/null)
2011-10-19T12:33:31.000+02:00 n22 dhcpcd[2755]: wlan0: carrier lost
2011-10-19T12:33:31.494+02:00 n22 kernel: cfg80211: Calling CRDA for country: DE
2011-10-19T12:33:31.000+02:00 n22 wpa_cli: interface wlan0 DISCONNECTED
2011-10-19T12:33:31.000+02:00 n22 wpa_cli: executing 'false /etc/init.d/net.wlan0 --quiet stop' failed
2011-10-19T12:33:33.000+02:00 n22 ntpd[2924]: Deleting interface #2 wlan0, 9.155.188.41#123, interface stats: received=103, sent=123,
dropped=0, active_time=2813 secs
2011-10-19T12:33:33.000+02:00 n22 ntpd[2924]: 213.154.229.24 interface 9.155.188.41 -> (none)
2011-10-19T12:33:33.000+02:00 n22 ntpd[2924]: 193.110.251.50 interface 9.155.188.41 -> (none)
2011-10-19T12:33:33.000+02:00 n22 ntpd[2924]: 95.140.150.140 interface 9.155.188.41 -> (none)
2011-10-19T12:33:33.000+02:00 n22 ntpd[2924]: 109.75.190.27 interface 9.155.188.41 -> (none)
2011-10-19T12:33:33.000+02:00 n22 ntpd[2924]: peers refreshed
2011-10-19T12:33:34.636+02:00 n22 kernel: wlan0: authenticate with 00:21:55:ac:8b:80 (try 1)
2011-10-19T12:33:34.637+02:00 n22 kernel: wlan0: authenticated
2011-10-19T12:33:34.639+02:00 n22 kernel: wlan0: waiting for beacon from 00:21:55:ac:8b:80
2011-10-19T12:33:34.685+02:00 n22 kernel: wlan0: beacon received
2011-10-19T12:33:34.689+02:00 n22 kernel: wlan0: associate with 00:21:55:ac:8b:80 (try 1)
2011-10-19T12:33:34.691+02:00 n22 kernel: wlan0: RX AssocResp from 00:21:55:ac:8b:80 (capab=0x431 status=0 aid=3)
2011-10-19T12:33:34.691+02:00 n22 kernel: wlan0: associated
2011-10-19T12:33:34.000+02:00 n22 dhcpcd[2755]: wlan0: carrier acquired
2011-10-19T12:33:34.000+02:00 n22 wpa_cli: interface wlan0 CONNECTED
2011-10-19T12:33:34.000+02:00 n22 wpa_cli: executing '/etc/init.d/net.wlan0 --quiet start' failed
2011-10-19T12:33:34.000+02:00 n22 dhcpcd[2755]: wlan0: rebinding lease of 9.155.188.41
2011-10-19T12:33:39.000+02:00 n22 dhcpcd[2755]: wlan0: acknowledged 9.155.188.41 from 9.64.163.10
2011-10-19T12:33:39.000+02:00 n22 dhcpcd[2755]: wlan0: checking for 9.155.188.41
2011-10-19T12:33:44.000+02:00 n22 dhcpcd[2755]: wlan0: leased 9.155.188.41 for 14400 seconds
2011-10-19T12:33:44.000+02:00 n22 dnsmasq[2334]: reading /etc/resolv.conf
2011-10-19T12:33:44.000+02:00 n22 dnsmasq[2334]: ignoring nameserver 127.0.0.1 - local interface
2011-10-19T12:33:46.000+02:00 n22 ntpd[2924]: Listen normally on 4 wlan0 9.155.188.41 UDP 123
2011-10-19T12:33:46.000+02:00 n22 ntpd[2924]: peers refreshed
2011-10-19T12:35:01.000+02:00 n22 cron[8662]: (root) CMD (/usr/lib/sa/sa1 60 5 >/dev/null)
2011-10-19T12:40:01.000+02:00 n22 cron[9141]: (root) CMD (test -x /usr/sbin/run-crons && /usr/sbin/run-crons )
2011-10-19T12:40:01.000+02:00 n22 cron[9142]: (root) CMD (/usr/lib/sa/sa1 60 5 >/dev/null)
2011-10-19T12:43:01.000+02:00 n22 dnsmasq[2334]: reading /etc/resolv.conf
2011-10-19T12:43:01.000+02:00 n22 dnsmasq[2334]: using nameserver 9.64.162.21#53
2011-10-19T12:43:01.000+02:00 n22 dnsmasq[2334]: using nameserver 9.64.163.21#53
2011-10-19T12:43:01.000+02:00 n22 dnsmasq[2334]: ignoring nameserver 127.0.0.1 - local interface
2011-10-19T12:45:01.000+02:00 n22 cron[9671]: (root) CMD (/usr/lib/sa/sa2 -A >/dev/null)
2011-10-19T12:45:01.000+02:00 n22 cron[9672]: (root) CMD (/usr/lib/sa/sa1 60 5 >/dev/null)
After rmmod and modprobe I restarted the network again, here's the output :
n22 ~ # cat /sys/kernel/debug/ieee80211/phy1/iwlagn/debug/tx_queue
hwq 00: read=2 write=2 stop=0 swq_id=0x00 (ac 0/hwq 0)
stop-count: 0
hwq 01: read=0 write=0 stop=0 swq_id=0x05 (ac 1/hwq 1)
stop-count: 0
hwq 02: read=6 write=6 stop=0 swq_id=0x0a (ac 2/hwq 2)
stop-count: 0
hwq 03: read=0 write=0 stop=0 swq_id=0x0f (ac 3/hwq 3)
stop-count: 0
hwq 04: read=76 write=76 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 05: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 06: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 07: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 08: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 09: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 10: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 11: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 12: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 13: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 14: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 15: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 16: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 17: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 18: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
hwq 19: read=0 write=0 stop=0 swq_id=0x00 (ac 0/hwq 0)
--
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3
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