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Date:      Mon, 14 Sep 2009 19:22:33 +0200
From:      Roland Smith <rsmith@xs4all.nl>
To:        Anton Shterenlikht <mexas@bristol.ac.uk>
Cc:        glewis@freebsd.org, freebsd-questions@freebsd.org, freebsd-ia64@freebsd.org
Subject:   Re: port math/gnuplot hangs and ignores "kill -9"
Message-ID:  <20090914172233.GA69286@slackbox.xs4all.nl>
In-Reply-To: <20090914154241.GA60268@mech-cluster241.men.bris.ac.uk>
References:  <20090914153728.GA60162@mech-cluster241.men.bris.ac.uk> <20090914154241.GA60268@mech-cluster241.men.bris.ac.uk>

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On Mon, Sep 14, 2009 at 04:42:41PM +0100, Anton Shterenlikht wrote:
> On Mon, Sep 14, 2009 at 04:37:28PM +0100, Anton Shterenlikht wrote:
> > on ia64 HEAD,  gnuplot-4.2.6, any plot command
> > hangs the program. top shows gnuplot is using 100% of CPU,
> > yeat CPU time is zero:
> >=20
> >   PID    UID    THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMM=
AND
> > 60071   1001      2  48    0 98008K 51424K CPU1    1   0:00 100.00% gnu=
plot
> >=20
> > kill -9 60071, either from my account, or from root,
> > has no effect, the process is still there.
> >=20
> > I cannot find a way to terminate this hanged process without reboot.
> >=20
> > This seems to be a regression.
>=20
> running gnuplot in batch (non-interactive) mode seems fine, so
> the problem seems to be with the screen terminal.
>=20
> I'm mostly puzzled by the fact that I cannot kill the process..

It could be that the process is stuck in the 'D' state (uninterruptable wai=
t).
You can veryfiy that by running 'ps -u' and looking in the eight column when
gnuplot is running.=20

Does the window with the plot actually appear?
=20
Interactive use of gnuplot-4.2.6 is fine on amd64 7.2-RELEASE-p2.

Roland
--=20
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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