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Re: % FINDFILE: Error managing child process. [message #40283 is a reply to message #40238]

Wed, 28 July 2004 15:36

Karl Schultz
Messages: 341
Registered: October 1999

Senior Member

It turns out that this is a known problem. Here's what is happening:

FINDFILE launches child processes (using the same mechanism as SPAWN) to get
file and directory information. The problem really has more to do with
SPAWN itself and not FINDFILE, so you'll see the same issue anywhere else
SPAWN is used.

On Solaris, IDL 5.5 and versions prior to 5.5 used vfork() to spawn
processes. IDL 5.6 (and 6.0) were changed to use fork() because we were led
to believe that fork() was more suitable when some of the threading support
was added in 5.6. It turns out that vfork() is really the method to use
regardless of the threading, and so IDL 6.1 uses vfork() again. This means
that your problem should go away with IDL 6.1.

Hope this helps.

Karl

"Timm Weitkamp" <dont.try@this.address> wrote in message
news:Pine.LNX.4.44.0407280954480.29421-100000@localhost.loca ldomain...
> Thank you for all info and suggestions. It seems unlikely (though not
> impossible) to me that a lack of swap space or other disk space should
> cause my problem, as some of you have suggested.
>
> Given that there is plenty of swap space, even quite a bit of RAM left and
> that the problem occurs only with 5.6 and higher, but not with 5.4, I tend
> to think that it is an internal IDL problem.
>
> I will further investigate this thing when I have more time -- for the
> time being I can live with it. Thanks again to all of you.
>
> Timm
>
> --
> Timm Weitkamp
> Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
>

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[Message index]

		% FINDFILE: Error managing child process. By: Timm Weitkamp on Fri, 23 July 2004 15:02
		Re: % FINDFILE: Error managing child process. By: Timm Weitkamp on Sat, 31 July 2004 03:21
		Re: % FINDFILE: Error managing child process. By: Karl Schultz on Wed, 28 July 2004 15:36
		Re: % FINDFILE: Error managing child process. By: Mark Hadfield on Wed, 28 July 2004 14:50

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