freebsd stable - Sep 2016 - 11.0 stuck on high network load

On Fri, Sep 16, 2016 at 12:11:55PM -0700, hiren panchasara wrote:
> 
> As I suspected, this looks like a hang trying to lock V_tcbinfo.
> 
> I'm ccing Julien here who worked on WLOCK -> RLOCK transition to
improve
> performance for short-lived connections. I am not too sure if thats the
> problem but looks in similar area so he may be able to provide some
> insights.
No, this is other case. In may case at this time no network traffic
more then hour. This is some sore of deadlock or like.

On 09/16/16 at 11:30P, Slawa Olhovchenkov wrote:
> On Fri, Sep 16, 2016 at 12:11:55PM -0700, hiren panchasara wrote:
> 
> > 
> > As I suspected, this looks like a hang trying to lock V_tcbinfo.
> > 
> > I'm ccing Julien here who worked on WLOCK -> RLOCK transition
to improve
> > performance for short-lived connections. I am not too sure if thats
the
> > problem but looks in similar area so he may be able to provide some
> > insights.
> 
> No, this is other case. In may case at this time no network traffic
> more then hour. This is some sore of deadlock or like.
In my limited understanding, such deadlock like situation can occur
without traffic too.

Cheers,
Hiren
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