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Re: [ath9k-devel] ath9k: massive unexplained latency in 2.6.27 (rc5, rc6, probably others)

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On Sat, Sep 20, 2008 at 2:48 PM, Steven Noonan <steven@xxxxxxxxxxxxxx> wrote:
> On Sat, Sep 20, 2008 at 2:26 PM, Luis R. Rodriguez
> <lrodriguez@xxxxxxxxxxx> wrote:
>> On Sat, Sep 20, 2008 at 2:22 PM, Steven Noonan <steven@xxxxxxxxxxxxxx> wrote:
>>
>>> Heh. I don't have an Xbox 360 or PS3 (sad, I know). Do have several
>>> 2.4GHz phones. ;)
>>
>> Microwaves are the best to make the signal wet poop BTW, if you have
>> that option available. Not sure if we can trigger the device that way
>> but I'm just brainstorming here.
>>
>
> Well, I've got the thing set to ATH_DBG_ANY (I want this damn bug
> found!), which will certainly be *interesting*. In 5 minutes, the log
> has jumped 9 megabytes.
>
> I've also got sadc monitoring IRQs so I know for certain when the
> interrupt storm starts.
>
> I'll let you know how this goes.

OK, here's the time index at which it b0rked:

18:28:38          sum   1106.00
18:28:39          sum   1037.62
18:28:40          sum   1069.00
18:28:41          sum   1167.00
18:28:42          sum   1155.00
18:28:43          sum   1339.00
18:28:44          sum  18355.00
18:28:45          sum  17845.45
18:28:46          sum  15285.00
18:28:47          sum  17511.00
18:28:48          sum  17568.69
18:28:49          sum  17704.04
18:28:50          sum  18566.67
18:28:51          sum  18913.13

And the entire log of the minute 18:28 is here:
http://www.uplinklabs.net/~tycho/linux/18.28.00-59.log.gz

It looks pretty crazy.

- Steven
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