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Date:      Fri, 16 Sep 2016 21:18:39 +0300
From:      Slawa Olhovchenkov <slw@zxy.spb.ru>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        freebsd-stable@FreeBSD.org
Subject:   Re: 11.0 stuck on high network load
Message-ID:  <20160916181839.GC2960@zxy.spb.ru>
In-Reply-To: <20160915090633.GS2840@zxy.spb.ru>
References:  <20160904215739.GC22212@zxy.spb.ru> <20160905014612.GA42393@strugglingcoder.info> <20160914213503.GJ2840@zxy.spb.ru> <20160915085938.GN38409@kib.kiev.ua> <20160915090633.GS2840@zxy.spb.ru>

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On Thu, Sep 15, 2016 at 12:06:33PM +0300, Slawa Olhovchenkov wrote:

> On Thu, Sep 15, 2016 at 11:59:38AM +0300, Konstantin Belousov wrote:
> 
> > On Thu, Sep 15, 2016 at 12:35:04AM +0300, 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.
> > 
> > Is 'login' you reference is the ipmi client state, or you mean login(1)
> > on the wedged host ?
> 
> on the wedged host
> 
> > If BMC stops responding simultaneously with the host, I would suspect
> > the hardware platform issues instead of a software problem.  Do you have
> > dedicated LAN port for BMC ?
> 
> Yes.
> But BMC emulate USB keyboard and this is may be lock inside USB
> system.
> "ipmi console don't respond" must be read as "ipmi console runnnig and
> attached but system don't react to keypress on this console".
> at the sime moment system respon to `enter` on ipmi sol console, but
> after enter `root` stuck in login in the '*tcp' state (I think this is
> NIS related).

~^B don't break to debuger.
But I can login to sol console.
All system work tooooo slooooow.
Some cores displayed by top as 100% idle.
Some cores displayed by top as 100% interrupt.

last pid: 16631;  load averages:  9.00,  9.08,  9.35    up 0+06:26:34  19:53:13
832 processes: 22 running, 765 sleeping, 42 waiting, 3 lock
CPU 0:   0.0% user,  0.0% nice,  0.0% system,  100% interrupt,  0.0% idle
CPU 1:   0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU 2:   0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU 3:   0.0% user,  0.0% nice,  0.4% system,  0.0% interrupt, 99.6% idle
CPU 4:   0.0% user,  0.0% nice,  0.0% system,  100% interrupt,  0.0% idle
CPU 5:   0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU 6:   0.0% user,  0.0% nice,  0.0% system,  100% interrupt,  0.0% idle
CPU 7:   0.0% user,  0.0% nice,  0.0% system,  100% interrupt,  0.0% idle
CPU 8:   0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU 9:   0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
CPU 10:  0.0% user,  0.0% nice,  0.0% system,  100% interrupt,  0.0% idle
CPU 11:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
Mem: 1564M Active, 5169M Inact, 114G Wired, 4548M Free
ARC: 107G Total, 98G MFU, 9476M MRU, 160K Anon, 150M Header, 254M Other
Swap: 32G Total, 32G Free

Now I am trying to

# pmcstat -c 0 -S CPU_CLK_UNHALTED_CORE -l 10 -O sample0.out

load: 10.32  cmd: pmcstat 16878 [runnable] 4632.42r 0.00u 0.00s 0% 2940k

I am still waiting




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