"Ferguson, Duncan" <Duncan.Ferguson@[...].com>  writes:

>  The console is a perl/tk widget with a couple of menus and an Entry widget
>  with a few bindings set up on it.  Every time a key is pressed it drops into
>  a func that replicates that key press to all the open file handles.
>  
>  I can open as many xterms as I want without a problem (we have the limit set
>  at 256), but the console window only appears if I have less than 15 of them
>  opened from the perl script.
>  
>  The script works by calling it with a list of hostnames, i.e. cssh s1 s2 s3
>  s4 s5 s6
>  Then the script forks itself, and the children exec into xterm connections
>  to the servers while the parent
>  works out the controlling terminal of all the children, opens a filehandle
>  to each of them, and stores the info in a hash.
>  Then, every time a key is pressed the hash is walked and the key sent to
>  each file handle of the child.
>  
>  As I say, this all works until I have more than 14 children, then the parent
>  refuses to show until a enough children are closed to get under the 14
>  limit.
>  
>  I have been looking at this for a few weeks and got no-where...
>  

The subject is about "Perl/Tk limits" and I don't see anything
appliable here, other than X11 server or OS limits. Are you using
fileevent()? Can you make the problem appear in a minimal script and
post this script to the list?

Regards,
	Slaven


>    Duncs
>  
>  -- 
>  
>  
>  
>  -----Original Message-----
>  From: Slaven Rezic [mailto:slaven@[...].de] 
>  Sent: 01 May 2003 15:09
>  To: Ferguson, Duncan
>  Cc: 'ptk@lists.stanford.edu'
>  Subject: Re: Perl/TK limits
>  
>  
>  "Ferguson, Duncan" <Duncan.Ferguson@[...].com> writes:
>  
>  > I seem to have hit a limit of some kind while using Perl(5.6.1)/TK(8.0) on
>  > Solaris 2.6 and I would like to extend it.
>  > 
>  > I have written a small program that will open up a number of xterm
>  sessions
>  > to a number of servers, and then opens up a small console window.  If you
>  > type into the console window it replicates the text into all xterm
>  windows,
>  > or you can type directly into one of the xterms (I grab all of the input
>  > file handles from the xterms and store them all in a hash so then I can
>  grab
>  > the input from the console, cycle through all of the connections and write
>  > out the input to each of the xterms)
>  > 
>  > Everything works perfectly until I try to open up more than 14 sessions.
>  > All the sessions start, MainLoop is entered, and the console window
>  doesn't
>  > open.  If I close 1 of the xterm sessions then the console opens up fine
>  and
>  > all works as before.
>  > 
>  > It appears as though there may be a limit of 16 file handles on my perl/tk
>  > script, and the console GUI needs 2 of them before it will open.  The
>  > session I start the perl in has no limits applied (certainly not this
>  small,
>  > anyhow).
>  > 
>  > What and where might this limit be, and how can I increase it?  I cannot
>  > find any reference to this type of thing in the FAQ, modules or manuals.
>  > 
>  
>  It is not clear to me what your console window looks like. Is it a
>  "xterm -C", or built from a Perl/Tk widget, e.g. a Tk::Text widget?
>  There are certainly limits how many xterms (or pseudo ttys at all) can
>  be created. On my system it's about 24. If it's more, I get "xterm: no
>  available ptys: No such file or directory" errors.
>  
>  Regards,
>  	Slaven
>  
>  -- 
>  Slaven Rezic - slaven@[...].de
>  
>      tksm - Perl/Tk program for searching and replacing in multiple files
>      http://ptktools.sourceforge.net/#tksm
>  
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-- 
Slaven Rezic - slaven@[...].de

    tktimex - project time manager
    http://sourceforge.net/projects/ptktools/
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