11.0 stuck on high network load

[hiren panchasara]

On 09/15/16 at 12:35P, Slawa Olhovchenkov wrote:
> On Sun, Sep 04, 2016 at 06:46:12PM -0700, hiren panchasara wrote:
> 
> > On 09/05/16 at 12:57P, Slawa Olhovchenkov wrote:
> > > I am try using 11.0 on Dual E5-2620 (no X2APIC).
> > > Under high network load and may be addtional conditional system go to
> > > unresponsible state -- no reaction to network and console (USB IPMI
> > > emulation). INVARIANTS give to high overhad. Is this exist some way to
> > > debug this?
> > 
> > Can you panic it from console to get to db> to get backtrace and other
> > info when it goes unresponsive?
> 
> ipmi console don't respond (chassis power diag don't react)
> login on sol console stuck on *tcp.

I assume you tried ~^b (tilda followed by ctrl+b) without success?

That usually drops into db>

I am also fighting an issue where upon said keystrokes, I see 
"KDB: enter: Break to debugger" but it doesn't drop to db>
At that point I have to 'ipmitool blah power reset' the box.

Cheers,
Hiren
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