link state changes take a "long" time to execute

Robert Watson rwatson at FreeBSD.org
Thu Jun 9 05:21:27 GMT 2005


On Wed, 8 Jun 2005, Jeff Roberson wrote:

>> So it sounds like there's a substantial delay in the link change thread --
>> probably because another task takes a long time to execute, maybe
>> blocking or delaying the task thread and preventing another task from
>> running.  On this box, I'm running with an idle if_xl, and an in-use
>> if_wi, which probably went into the associated state about when the
>> message was printed.  Kernel source date is June 3.
>
> If you save a ktrdump right when that message is generated it'll be easy 
> to understand if other threads are interfering.

Unfortunately, I'm not sure how reproduceable this is.  I've only had it 
that one time, but will keep an eye out for it again.

Robert N M Watson


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