[ale] apache2 process hanging

[James P. Kinney III]

I think it's perl issue. Fletch will correct me if I'm wrong.

A workaround is to append all the output data to an array and print it
in one print loop at the end.

I seem to recall some major differences between 5.0 and 5.8. I know
there are aspects of 5.8 that have cased pain in big applications
(Interchange) due to the threaded perl that RedHat ships with. Threaded
perl is a great idea, but it can cause problems if the app is not
designed to avoid it if not needed. I don't know enough to use it so I
had to recompile perl to be non-threaded for use in Interchange.

On Mon, 2004-03-01 at 10:02, Armsby John-G16665 wrote:
> All,
> 
> I am at my dim wits end.  I have tried and cried.
> 
> I am moving a working perl cgi program from hpux 10, perl 5.003, apache 1.3.1 TO Red Hat Linux 9, perl 5.8, apache2.
> 
> The program reads a several meg text file, and spits out a table based upon form criteria.  The program compiles and executes with no problem.  THE PROBLEM is that the print output appears to be hanging in the buffer.  I get a little bit of output and then the program hangs.  I have grepped the process and find that it is asleep after a few seconds.  
> 
> I have seen a similar problem with a C cgi script that I moved over.  Liberally sprinkling the print statements with flush fixed the problem.
> 
> I have tried placing $| = 1; immediately before all my print statements.  No go.  I have seen some "select" code associated with a file handle use with setting $| to 1, but have been unable to make the leap from flushing a file handle.
> 
> I can't figure out if this is a perl problem or an apache2 problem.  Since I am taking the original Perl and moving it over, it appears that apache2 is handling buffering differently from1.3.1.
> 
> I am stumped.
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James P. Kinney III          \Changing the mobile computing world/
CEO & Director of Engineering \          one Linux user         /
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GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney at localnetsolutions.com>
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