#12372: ar71xx/ath9k (WRT160NL): wifi client's connection quality suddenly drops
after 18-24h hostapd uptime
--------------------------+--------------------------------------------
Reporter: dap@… | Owner: nbd
Type: defect | Status: closed
Priority: normal | Milestone: Barrier Breaker 14.07
Component: kernel | Version: Attitude Adjustment 12.09 Beta
Resolution: no_response | Keywords: ar71xx ath9k wrt160nl loss
--------------------------+--------------------------------------------
Comment (by dap@…):
Replying to [comment:134 dap@…]:
> Replying to [comment:126 nbd]:
> > please try copying http://nbd.name/950-test3.patch to
package/kernel/mac80211/patches, rebuild and test again.
> Now I've some spare time, I'm testing r42516 right now;
Stability is currently OK, but the performance issue I mentioned in
comment:108 still there. It hitted the AP after about 24h uptime.
ANI stat under degraded performance when clients are idle:
{{{
ANIR OFDM CCKL SPUP SPDW OWD1 OWD0 MRC1 MRC0 FIRU FIRD INVL OERR
CERR
14:22:17 0 7 2 1 1 0 0 0 0 1 1 0 2859
5
14:22:27 0 6 2 1 1 0 0 0 0 1 2 0 2760
3
14:22:37 0 6 2 1 1 0 0 0 0 1 1 0 3310
6
14:22:47 0 6 2 1 1 0 0 0 0 1 1 0 3028
10
14:22:57 0 7 2 1 1 0 0 0 0 1 0 0 3120
3
14:23:07 0 7 2 1 1 0 0 0 0 1 1 0 3021
18
14:23:17 0 6 2 0 0 1 1 0 0 1 2 0 2218
4
14:23:27 0 7 2 1 1 0 0 0 0 1 0 0 3234
6
}}}
ANI stat under degraded performance when a client downloading:
{{{
ANIR OFDM CCKL SPUP SPDW OWD1 OWD0 MRC1 MRC0 FIRU FIRD INVL OERR
CERR
14:26:48 0 6 2 0 0 0 0 0 0 0 1 0 1666
58
14:26:58 0 7 2 2 2 0 0 0 0 2 1 0 1866
58
14:27:08 0 7 2 0 0 1 1 0 0 1 1 0 1903
55
14:27:18 0 7 2 0 0 3 3 0 0 3 3 0 1386
33
14:27:28 0 6 2 1 1 0 0 0 0 1 2 0 1721
45
14:27:38 0 7 2 2 2 0 0 0 0 2 1 0 2266
40
14:27:48 0 5 2 1 1 0 0 0 0 1 3 0 1755
41
14:27:58 0 5 2 2 2 0 0 0 0 2 2 0 1915
39
}}}
Here I issued the "wifi" command, normal performance has been restored
immediately.
ANI stat when clients are idle:
{{{
ANIR OFDM CCKL SPUP SPDW OWD1 OWD0 MRC1 MRC0 FIRU FIRD INVL OERR
CERR
14:39:10 0 8 2 0 0 0 0 0 0 1 1 0 2899
5
14:39:20 0 6 2 0 0 1 0 0 0 0 2 0 2899
4
14:39:30 0 9 2 1 1 0 1 0 0 3 0 0 3413
9
14:39:40 0 7 2 0 0 1 0 0 0 0 2 0 2708
15
14:39:50 0 9 2 0 0 0 1 0 0 2 0 0 3557
18
14:40:00 0 9 2 0 0 0 0 0 0 1 1 0 3190
7
14:40:10 0 7 2 0 0 1 0 0 0 0 2 0 2598
7
14:40:20 0 9 2 0 0 0 1 0 0 2 0 0 3099
43
}}}
ANI stat when a client downloading with high speed:
{{{
ANIR OFDM CCKL SPUP SPDW OWD1 OWD0 MRC1 MRC0 FIRU FIRD INVL OERR
CERR
14:36:22 0 7 2 0 0 1 0 0 0 0 1 0 2897
13
14:36:32 0 7 2 0 0 1 1 0 0 1 1 0 2293
42
14:36:42 0 9 2 0 0 0 1 0 0 2 0 0 1766
92
14:36:52 0 9 2 0 0 0 0 0 0 0 0 0 1370
84
14:37:02 0 8 2 0 0 0 0 0 0 0 1 0 1550
88
14:37:12 0 9 2 0 0 0 0 0 0 1 0 0 1581
92
14:37:22 0 9 2 0 0 0 0 0 0 1 1 0 1287
96
14:37:32 0 9 2 0 0 0 0 0 0 0 0 0 1495
84
}}}
The performance issue is noticable on normal web browsing too.
Good to see the improvement on stability, but this performance issue is
still a significant problem.
--
Ticket URL: <https://dev.openwrt.org/ticket/12372#comment:135>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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