Hi!

Those TIM messages and PSPOLL messages are expected. They're the power
save state change.s

Since your laptop on battery is likely trying ot save as much power as
possible, this isn't surprising.

can you give me the logging info when TX stalls? I'd like to see what
the state of the TX queues are.

Thanks!



Adrian

On 16 May 2013 02:09, Lev Serebryakov <l...@freebsd.org> wrote:
> Hello, Adrian.
> You wrote 15 мая 2013 г., 22:34:26:
>
> AC> I've just committed my first pass of improved power save and ps-poll
> AC> support in AP mode to -HEAD.
> AC> There's a bunch of corner cases I'm trying to solve but I'd rather
> AC> this be in the driver now rather than later.
> AC> So please, update to -HEAD and give this a whirl. Let me know if
> AC> things are better, worse or the same.
>  r250675, my ususal test (300 mbit AP -> Client).
> Looks good. First of all, it gives me stable 100-150Mbit, so it could
> negotiate HT rates again without TCP :)
>
>
>  And it sustain for 600 seconds in this mode, which was impossible
> before.
>
>  There was several such messages:
>
> May 16 12:57:31 gateway kernel: ath0: ath_tx_tid_bar_suspend: 
> tid=0xffffff8000d82230, bar_wait=0, bar_tx=0, called
> May 16 12:57:31 gateway kernel: ath0: ath_tx_tid_bar_tx_ready: 
> c4:85:08:3f:9e:c2: tid=0xffffff8000d82230 (0), bar ready
> May 16 12:57:31 gateway kernel: ath0: ath_tx_tid_bar_tx: c4:85:08:3f:9e:c2: 
> tid=0xffffff8000d82230, called
> May 16 12:57:31 gateway kernel: ath0: ath_tx_tid_bar_tx: c4:85:08:3f:9e:c2: 
> tid=0xffffff8000d82230, new BAW left edge=676
> May 16 12:57:31 gateway kernel: ath0: ath_bar_response: c4:85:08:3f:9e:c2: 
> called; tap=0xffffff8000d7f3a0, atid=0xffffff8000d82230, txa_tid=0, 
> atid->tid=0, status=0, attempts=1
> May 16 12:57:31 gateway kernel: ath0: ath_tx_tid_bar_unsuspend: 
> c4:85:08:3f:9e:c2: tid=0xffffff8000d82230, called
>
>  But no full stalls.
>
>  I have dev.ath.0.debug=0x900000020
>
>  A lot of such messages in log when notebook is on battery (no such
> messages when it is on AC power):
>
> May 16 12:51:12 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 12:51:12 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
> May 16 12:51:12 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=0, an_pwrsave=0, disabling
> May 16 12:51:18 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=1
> May 16 12:51:18 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 12:51:18 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
> May 16 12:51:18 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=0, an_pwrsave=0, disabling
> May 16 12:51:20 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=1
> May 16 12:51:20 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 12:51:20 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
> May 16 12:51:20 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=0, an_pwrsave=0, disabling
> May 16 12:51:21 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=1
> May 16 12:51:21 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 12:51:21 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
> May 16 12:51:21 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=0, an_pwrsave=0, disabling
> May 16 12:51:31 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=1
> May 16 12:51:31 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 12:51:31 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
> May 16 12:51:31 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=0, an_pwrsave=0, disabling
> May 16 12:51:32 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=1
> May 16 12:51:32 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 12:51:32 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
> May 16 12:51:32 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=0, an_pwrsave=0, disabling
> May 16 12:51:34 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=1
>
> And sometimes it shows:
>
> May 16 13:05:52 gateway kernel: ath0: ath_node_set_tim: c4:85:08:3f:9e:c2: 
> enable=1, enabling TIM
> May 16 13:05:52 gateway kernel: ath0: ath_node_recv_pspoll: 
> c4:85:08:3f:9e:c2: leaking frame to TID 0
> May 16 13:05:52 gateway kernel: ath0: ath_tx_leak_count_update: 
> c4:85:08:3f:9e:c2: leak count = 1, psq=1, swq=6, MORE=1
> May 16 13:05:52 gateway kernel: ath0: ath_node_recv_pspoll: 
> c4:85:08:3f:9e:c2: leaking frame to TID 0
> May 16 13:05:52 gateway kernel: ath0: ath_tx_leak_count_update: 
> c4:85:08:3f:9e:c2: leak count = 1, psq=1, swq=8, MORE=1
> May 16 13:05:52 gateway kernel: ath0: ath_node_powersave: c4:85:08:3f:9e:c2: 
> enable=0
>
>   It is when traffic goes 100-150Mbit/s, with drops to 75-85 every
> ~10th second.
>
>   At second test, after ~300 seconds of test in battery mode it drops to 
> non-N speeds
>  and never recovered.
>
> --
> // Black Lion AKA Lev Serebryakov <l...@freebsd.org>
>
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