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Re: Strange IDL Help probelm 6.3 [message #52493 is a reply to message #52484]

Wed, 07 February 2007 01:40

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

JJ wrote:

> Stranger and stranger.
>
> More info.
>
> I found that there is a ~/.assistant directory, which contains files
> like "contentdb.IDL 6.3 Help" and "indexdb.IDL 6.3 Help".
>
> There is also a ~/.qt directory, which may contain files like:
> ".idl_assistantrc.lock" and "idl_assistantrc"
>
> If I remove "~/.qt/idl_assistantrc" I can get the IDL help to start from
> one of the non-primary computers. However, when I try and exit the IDL
> help, it hangs and it does not create a new "~/.qt/idl_assistantrc".
>
> If "~/.qt/idl_assistantrc" does not exist, starting IDL help will always
> determine that it needs to reinitialize the db files in ~/.assistant
>
> This whole thing is quite annoying as I frequently work on computers
> other than the main server and am fond of using the IDL help.
>
> I'm not even sure what the .qt directory is for. I'm not sure what the
> .idl_assistantrc.lock file is doing. Behavior seems to be the same
> regardless of whether it is there or not.
>
> Any ideas?
>
> Thanks.
>
> -Jonathan

It's probably file locking over NFS. I don't know how well this is
implemented/supported on Solaris.

idl_assistant requests advisory locks [ fcntl(fd, F_SETLKW, {type=F_RDLCK]
on .qt/.qtrc.lock and .qt/.idl_assistantrc.lock. File locking over NFS is
notorious for problems of this kind.

Truss may be able to tell you exactly what system call is causing the program to
hang. If I run IDL 6.2 idl_assistant here it seg. faults, and I don't have the
6.3 version for Solaris so I can't test it myself.

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555

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[Message index]

		Re: Strange IDL Help probelm 6.3 By: Nigel Wade on Thu, 08 February 2007 02:49
		Re: Strange IDL Help probelm 6.3 By: David Fanning on Wed, 07 February 2007 10:25
		Re: Strange IDL Help probelm 6.3 By: JJ on Wed, 07 February 2007 09:43
		Re: Strange IDL Help probelm 6.3 By: JJ on Wed, 07 February 2007 09:34
		Re: Strange IDL Help probelm 6.3 By: JJ on Wed, 07 February 2007 09:25
		Re: Strange IDL Help probelm 6.3 By: JJ on Wed, 07 February 2007 09:20
		Re: Strange IDL Help probelm 6.3 By: JJ on Wed, 07 February 2007 09:18
		Re: Strange IDL Help probelm 6.3 By: Nigel Wade on Wed, 07 February 2007 01:40
		Re: Strange IDL Help probelm 6.3 By: JD Smith on Tue, 06 February 2007 16:00
		Re: Strange IDL Help probelm 6.3 By: JJ on Tue, 06 February 2007 14:07
		Re: Strange IDL Help probelm 6.3 By: JJ on Tue, 06 February 2007 12:10

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