mpt timed out and Re: port math/gnuplot hangs and ignores "kill -9"

[Anton Shterenlikht]

On Thu, Sep 17, 2009 at 02:40:24PM +0100, Anton Shterenlikht wrote:
> On Thu, Sep 17, 2009 at 03:16:16PM +0200, Roland Smith wrote:
> > On Thu, Sep 17, 2009 at 01:34:04PM +0100, Anton Shterenlikht wrote:
> > > > It could be that the process is stuck in the 'D' state (uninterruptable wait).
> > > > You can veryfiy that by running 'ps -u' and looking in the eight column when
> > > > gnuplot is running. 
> > > > 
> > > > Does the window with the plot actually appear?
> > > >  
> > > > Interactive use of gnuplot-4.2.6 is fine on amd64 7.2-RELEASE-p2.
> > > 
> > > I reinstalled gnuplot-4.2.6 and (hopefully) all ports on which it depends.
> > > I still get the same behaviour. 
> > > 
> > > top -PISu shows:
> > > 
> > > last pid:   108;  load averages:  0.88,  0.35,  0.19    up 2+02:23:38  13:27:52
> > > 109 processes: 4 running, 88 sleeping, 17 waiting
> > > CPU 0:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> > > CPU 1:  0.0% user,  0.0% nice,  100% system,  0.0% interrupt,  0.0% idle
> > > Mem: 105M Active, 2074M Inact, 363M Wired, 768K Cache, 827M Buf, 5322M Free
> > > Swap: 19G Total, 19G Free
> > > 
> > >   PID    UID    THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
> > >    11      0      2 171 ki31     0K    64K RUN     0  77.9H 100.00% idle
> > > 99992   1001      2  48    0 98240K 55608K CPU1    1   0:00 100.00% gnuplot
> > > 
> > > so gnuplot is using 100% and all in system state.
> > > 
> > > and ps -u:
> > > 
> > > USER    PID %CPU %MEM   VSZ   RSS  TT  STAT STARTED      TIME COMMAND
> > > mexas 99992 98.1  0.7 98240 55608   5  R+    1:25pm   0:00.72 gnuplot
> > > 
> > > so the state is not "D".
> > > 
> > > The window does appear (just using simple gnuplot> plot sin(x), and
> > > the terminal is set to 'wxt', but nothing ever apears in the window.
> > 
> > The wxt terminal is only available when gnuplot is compiled with the wxWidgets
> > toolkit. Try using the plain x11 terminal, and see if that works better?
> 
> yes, that works fine! Thank you!
> 
> So the problem must be with wxgtk2-2.8.10_1 and wxgtk2-common-2.8.10_1 ?
> 
> How can I kill the offending gnuplot process?

On reboot I see this on the console:

System shutdown time has arrived
Stopping cron.
Stopping sshd.
Stopping ntpd.
Stopping devd.
Writing entropy file:mpt0: request 0xa0000000000d2140:52792 timed out for ccb 0x

e000000019ece800 (req->ccb 0xe000000019ece800)
mpt0: completing timedout/aborted req 0xa0000000000d2140:52792
mpt0: Timedout requests already complete. Interrupts may not be functioning.
Sep 17 14:49:59 mech-cluster241 syslogd: exiting on signal 15
Sep 17 14:49:59 init: timeout expired for /bin/sh on /etc/rc.shutdown: Interrupt

ed system call; going to single user mode
Sep 17 14:50:19 init: some processes would not die; ps axl advised
Waiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...3 1 2


I'm a bit worried about mpt0 messages - this is the SCSI driver.
Does this indicate a problem with mpt?

many thanks
anton

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423