Date: Fri, 16 Sep 2016 22:03:30 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: hiren panchasara <hiren@strugglingcoder.info> Cc: Konstantin Belousov <kostikbel@gmail.com>, freebsd-stable@FreeBSD.org Subject: Re: 11.0 stuck on high network load Message-ID: <20160916190330.GG2840@zxy.spb.ru> In-Reply-To: <20160916183053.GL9397@strugglingcoder.info> 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> <20160916181839.GC2960@zxy.spb.ru> <20160916183053.GL9397@strugglingcoder.info>
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On Fri, Sep 16, 2016 at 11:30:53AM -0700, hiren panchasara wrote:
> On 09/16/16 at 09:18P, Slawa Olhovchenkov wrote:
> > 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.
>
> You can probably:
> debug.kdb.enter: set to enter the debugger
>
> or force a panic and get vmcore:
> debug.kdb.panic: set to panic the kernel
I am reset this host.
PMC samples collected and decoded:
@ CPU_CLK_UNHALTED_CORE [4653445 samples]
51.86% [2413083] lock_delay @ /boot/kernel.VSTREAM/kernel
100.0% [2413083] __rw_wlock_hard
100.0% [2413083] tcp_tw_2msl_scan
99.99% [2412958] pfslowtimo
100.0% [2412958] softclock_call_cc
100.0% [2412958] softclock
100.0% [2412958] intr_event_execute_handlers
100.0% [2412958] ithread_loop
100.0% [2412958] fork_exit
00.01% [125] tcp_twstart
100.0% [125] tcp_do_segment
100.0% [125] tcp_input
100.0% [125] ip_input
100.0% [125] swi_net
100.0% [125] intr_event_execute_handlers
100.0% [125] ithread_loop
100.0% [125] fork_exit
09.43% [438774] _rw_runlock_cookie @ /boot/kernel.VSTREAM/kernel
100.0% [438774] tcp_tw_2msl_scan
99.99% [438735] pfslowtimo
100.0% [438735] softclock_call_cc
100.0% [438735] softclock
100.0% [438735] intr_event_execute_handlers
100.0% [438735] ithread_loop
100.0% [438735] fork_exit
00.01% [39] tcp_twstart
100.0% [39] tcp_do_segment
100.0% [39] tcp_input
100.0% [39] ip_input
100.0% [39] swi_net
100.0% [39] intr_event_execute_handlers
100.0% [39] ithread_loop
100.0% [39] fork_exit
08.57% [398970] __rw_wlock_hard @ /boot/kernel.VSTREAM/kernel
100.0% [398970] tcp_tw_2msl_scan
99.99% [398940] pfslowtimo
100.0% [398940] softclock_call_cc
100.0% [398940] softclock
100.0% [398940] intr_event_execute_handlers
100.0% [398940] ithread_loop
100.0% [398940] fork_exit
00.01% [30] tcp_twstart
100.0% [30] tcp_do_segment
100.0% [30] tcp_input
100.0% [30] ip_input
100.0% [30] swi_net
100.0% [30] intr_event_execute_handlers
100.0% [30] ithread_loop
100.0% [30] fork_exit
05.79% [269224] __rw_try_rlock @ /boot/kernel.VSTREAM/kernel
100.0% [269224] tcp_tw_2msl_scan
99.99% [269203] pfslowtimo
100.0% [269203] softclock_call_cc
100.0% [269203] softclock
100.0% [269203] intr_event_execute_handlers
100.0% [269203] ithread_loop
100.0% [269203] fork_exit
00.01% [21] tcp_twstart
100.0% [21] tcp_do_segment
100.0% [21] tcp_input
100.0% [21] ip_input
100.0% [21] swi_net
100.0% [21] intr_event_execute_handlers
100.0% [21] ithread_loop
100.0% [21] fork_exit
05.35% [249141] _rw_wlock_cookie @ /boot/kernel.VSTREAM/kernel
99.76% [248543] tcp_tw_2msl_scan
99.99% [248528] pfslowtimo
100.0% [248528] softclock_call_cc
100.0% [248528] softclock
100.0% [248528] intr_event_execute_handlers
100.0% [248528] ithread_loop
100.0% [248528] fork_exit
00.01% [15] tcp_twstart
100.0% [15] tcp_do_segment
100.0% [15] tcp_input
100.0% [15] ip_input
100.0% [15] swi_net
100.0% [15] intr_event_execute_handlers
100.0% [15] ithread_loop
100.0% [15] fork_exit
00.24% [598] pfslowtimo
100.0% [598] softclock_call_cc
100.0% [598] softclock
100.0% [598] intr_event_execute_handlers
100.0% [598] ithread_loop
100.0% [598] fork_exit
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