* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
@ 2011-01-11 16:24 Bernhard Walle
2011-01-20 9:53 ` Bernhard Walle
2011-01-20 22:39 ` Luis R. Rodriguez
0 siblings, 2 replies; 8+ messages in thread
From: Bernhard Walle @ 2011-01-11 16:24 UTC (permalink / raw)
To: ath9k-devel
Hello ath9k experts,
can somebody explain what
> [...]
> PHY ERR : 96196
> [...]
> UNDERRUN : 96196
> [...]
in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
a hardware problem, or a driver problem?
Thanks for any pointers!
Regards,
Bernhard
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-11 16:24 [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv Bernhard Walle
@ 2011-01-20 9:53 ` Bernhard Walle
2011-01-20 10:07 ` Mohammed Shafi
2011-01-20 22:39 ` Luis R. Rodriguez
1 sibling, 1 reply; 8+ messages in thread
From: Bernhard Walle @ 2011-01-20 9:53 UTC (permalink / raw)
To: ath9k-devel
Hi again,
Am 11.01.2011 17:24, schrieb Bernhard Walle:
>
> can somebody explain what
>
>> [...]
>> PHY ERR : 96196
>> [...]
>> UNDERRUN : 96196
>> [...]
>
> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
> a hardware problem, or a driver problem?
>
> Thanks for any pointers!
Does that really nobody know? Anyone else seeing that problem?
Regards,
Bernhard
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-20 9:53 ` Bernhard Walle
@ 2011-01-20 10:07 ` Mohammed Shafi
2011-01-20 10:13 ` Bernhard Walle
0 siblings, 1 reply; 8+ messages in thread
From: Mohammed Shafi @ 2011-01-20 10:07 UTC (permalink / raw)
To: ath9k-devel
On Thu, Jan 20, 2011 at 3:23 PM, Bernhard Walle <walle@corscience.de> wrote:
> Hi again,
>
> Am 11.01.2011 17:24, schrieb Bernhard Walle:
>>
>> can somebody explain what
>>
>>> [...]
>>> ? ? ? ? ? ?PHY ERR : ? ? ?96196
>>> [...]
>>> ? ? ? ? ? UNDERRUN : ? ? ?96196
>>> [...]
>>
>> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
>> a hardware problem, or a driver problem?
>>
>> Thanks for any pointers!
>
> Does that really nobody know? Anyone else seeing that problem?
Hi I had seen PHY_ERR but not of this much frequency.
have not seen UNDERRUN errors like this
what card are you using ? and kernel /compat wireless
>
>
> Regards,
> Bernhard
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-20 10:07 ` Mohammed Shafi
@ 2011-01-20 10:13 ` Bernhard Walle
2011-01-20 10:18 ` Mohammed Shafi
0 siblings, 1 reply; 8+ messages in thread
From: Bernhard Walle @ 2011-01-20 10:13 UTC (permalink / raw)
To: ath9k-devel
Hello,
Am 20.01.2011 11:07, schrieb Mohammed Shafi:
> On Thu, Jan 20, 2011 at 3:23 PM, Bernhard Walle <walle@corscience.de> wrote:
>> Am 11.01.2011 17:24, schrieb Bernhard Walle:
>>>
>>> can somebody explain what
>>>
>>>> [...]
>>>> PHY ERR : 96196
>>>> [...]
>>>> UNDERRUN : 96196
>>>> [...]
>>>
>>> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
>>> a hardware problem, or a driver problem?
>>>
>>> Thanks for any pointers!
>>
>> Does that really nobody know? Anyone else seeing that problem?
>
> Hi I had seen PHY_ERR but not of this much frequency.
> have not seen UNDERRUN errors like this
> what card are you using ? and kernel /compat wireless
I'm using a SparkLAN WPEA-111N with 2.6.37 vanilla driver/kernel. I'm
seeing that error only on the AP side, not the STA side.
Regards,
Bernhard
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-20 10:13 ` Bernhard Walle
@ 2011-01-20 10:18 ` Mohammed Shafi
0 siblings, 0 replies; 8+ messages in thread
From: Mohammed Shafi @ 2011-01-20 10:18 UTC (permalink / raw)
To: ath9k-devel
On Thu, Jan 20, 2011 at 3:43 PM, Bernhard Walle <walle@corscience.de> wrote:
> Hello,
>
> Am 20.01.2011 11:07, schrieb Mohammed Shafi:
>> On Thu, Jan 20, 2011 at 3:23 PM, Bernhard Walle <walle@corscience.de> wrote:
>>> Am 11.01.2011 17:24, schrieb Bernhard Walle:
>>>>
>>>> can somebody explain what
>>>>
>>>>> [...]
>>>>> ? ? ? ? ? ?PHY ERR : ? ? ?96196
>>>>> [...]
>>>>> ? ? ? ? ? UNDERRUN : ? ? ?96196
>>>>> [...]
>>>>
>>>> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
>>>> a hardware problem, or a driver problem?
>>>>
>>>> Thanks for any pointers!
>>>
>>> Does that really nobody know? Anyone else seeing that problem?
>>
>> Hi I had seen PHY_ERR but not of this much frequency.
>> have not seen UNDERRUN errors like this
>> what card are you using ? and kernel /compat wireless
>
> I'm using a SparkLAN WPEA-111N with 2.6.37 vanilla driver/kernel. I'm
> seeing that error only on the AP side, not the STA side.
Ok, I referred to station(AR9280) and yours also same i think.
Have not tested it in AP.
>
>
> Regards,
> Bernhard
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-11 16:24 [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv Bernhard Walle
2011-01-20 9:53 ` Bernhard Walle
@ 2011-01-20 22:39 ` Luis R. Rodriguez
2011-01-21 8:42 ` Bernhard Walle
1 sibling, 1 reply; 8+ messages in thread
From: Luis R. Rodriguez @ 2011-01-20 22:39 UTC (permalink / raw)
To: ath9k-devel
On Tue, Jan 11, 2011 at 8:24 AM, Bernhard Walle <walle@corscience.de> wrote:
> Hello ath9k experts,
>
> can somebody explain what
>
>> [...]
>> ? ? ? ? ? ?PHY ERR : ? ? ?96196
>> [...]
>> ? ? ? ? ? UNDERRUN : ? ? ?96196
>> [...]
>
> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
> a hardware problem, or a driver problem?
Kyungwan has explained to me:
We have 3 types of underrun, fifo_underrun, tx_data_underrun_err and
tx_dlmtr_underrun_err. All 3 underruns happen because there is not
enough data for transmission. But when happens and how to handle are
slightly different for each type.
Luis
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-20 22:39 ` Luis R. Rodriguez
@ 2011-01-21 8:42 ` Bernhard Walle
2011-01-21 18:59 ` Kyungwan Nam
0 siblings, 1 reply; 8+ messages in thread
From: Bernhard Walle @ 2011-01-21 8:42 UTC (permalink / raw)
To: ath9k-devel
Hi Luis,
thanks for your reply!
Am 20.01.2011 23:39, schrieb Luis R. Rodriguez:
> On Tue, Jan 11, 2011 at 8:24 AM, Bernhard Walle <walle@corscience.de> wrote:
>>
>> can somebody explain what
>>
>>> [...]
>>> PHY ERR : 96196
>>> [...]
>>> UNDERRUN : 96196
>>> [...]
>>
>> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
>> a hardware problem, or a driver problem?
>
> Kyungwan has explained to me:
>
> We have 3 types of underrun, fifo_underrun, tx_data_underrun_err and
> tx_dlmtr_underrun_err. All 3 underruns happen because there is not
> enough data for transmission. But when happens and how to handle are
> slightly different for each type.
And what does it mean? Is that critical? Normal?
Regards,
Bernhard
^ permalink raw reply [flat|nested] 8+ messages in thread
* [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
2011-01-21 8:42 ` Bernhard Walle
@ 2011-01-21 18:59 ` Kyungwan Nam
0 siblings, 0 replies; 8+ messages in thread
From: Kyungwan Nam @ 2011-01-21 18:59 UTC (permalink / raw)
To: ath9k-devel
Hi Bernhard,
Typically Tx underrun can be seen at high MCS rate because it's not fast enough to fetch the data to transmit but typically it's temporal and transient and we can ignore it. However, if Tx underrun keeps happening or happens frequently, then we need to put our effort on investigation. Thanks!
Regards,
Kyungwan
-----Original Message-----
From: Bernhard Walle [mailto:walle at corscience.de]
Sent: Friday, January 21, 2011 12:43 AM
To: Luis R. Rodriguez
Cc: ath9k-devel at lists.ath9k.org; Kyungwan Nam
Subject: Re: [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv
Hi Luis,
thanks for your reply!
Am 20.01.2011 23:39, schrieb Luis R. Rodriguez:
> On Tue, Jan 11, 2011 at 8:24 AM, Bernhard Walle <walle@corscience.de> wrote:
>>
>> can somebody explain what
>>
>>> [...]
>>> PHY ERR : 96196
>>> [...]
>>> UNDERRUN : 96196
>>> [...]
>>
>> in /sys/kernel/debug/ath9k/phy0/recv actually means. Is that normal, or
>> a hardware problem, or a driver problem?
>
> Kyungwan has explained to me:
>
> We have 3 types of underrun, fifo_underrun, tx_data_underrun_err and
> tx_dlmtr_underrun_err. All 3 underruns happen because there is not
> enough data for transmission. But when happens and how to handle are
> slightly different for each type.
And what does it mean? Is that critical? Normal?
Regards,
Bernhard
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2011-01-21 18:59 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-01-11 16:24 [ath9k-devel] UNDERRUN / PHY ERR in /sys/kernel/debug/ath9k/phy0/recv Bernhard Walle
2011-01-20 9:53 ` Bernhard Walle
2011-01-20 10:07 ` Mohammed Shafi
2011-01-20 10:13 ` Bernhard Walle
2011-01-20 10:18 ` Mohammed Shafi
2011-01-20 22:39 ` Luis R. Rodriguez
2011-01-21 8:42 ` Bernhard Walle
2011-01-21 18:59 ` Kyungwan Nam
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