ID: 19886
Updated by: spic@php.net
Reported By: spic@php.net
-Status: Feedback
+Status: Open
-Bug Type: Performance problem
+Bug Type: Reproducible crash
Operating System: Windows, any Version
PHP Version: 4CVS-2002-10-13
New Comment:
The following snippets illustrate the environment
[frameset.php]
->frame1.php
->frame2.php
->frame3.php
[frame1.php]
<?
header("Content-type: application/pdf\n");
readfile("some_100k_large.pdf");
?>
[frame2.php]
<?
echo "Something";
?>
[frame3.php]
<?
echo "else";
?>
Previous Comments:
------------------------------------------------------------------------
[2002-10-13 10:16:01] spic@php.net
@wez: These scripts don't use sessions. They run of a CD in a
single-user-environment.
@nicos: Calling the "passthrough"-script directly works without errors.
But calling it in an frameset (together with two other scripts) crashes
when outputting a file > 100k,
The php_stream_read() returns the correct filesize.
The fact, that the parrallel execution of three scripts of one handles
a big file may be the source of the problem.
There are no write-accesses. Only Read-Accesses to small config-files.
Removing the "big-files-passthrough" let the scripts run properly.
------------------------------------------------------------------------
[2002-10-13 10:02:11] wez@php.net
Can you reduce this to the simplest combination of scripts?
(That don't use sessions).
------------------------------------------------------------------------
[2002-10-13 09:37:40] nicos@php.net
did you checked if php_stream_read() was returning the right filesize
value? that was the first bug.
------------------------------------------------------------------------
[2002-10-13 09:10:57] spic@php.net
Note: Calling sleep(5) before dumping the PDF solves the problem, so I
think the bug is related to a memory management/multithreading
problem...
------------------------------------------------------------------------
[2002-10-13 09:08:03] spic@php.net
Environment: Windows
WebServer: Microweb (CD-WebServer)
PHP-Version: Latest CVS and 4.2.4-dev
PHP is installed as CGI
In a frameset-environment, PHP hangs while outputting large PDF-Files.
The Frameset consists of three Frames. Every Frame is PHP-generated.
One functions as "PDF-Passthrough".
All works fine, if the Passthrough-File is smaller than approx. 100k.
Files >100k make the system hang.
Calling the passthrough-script directly (w/o frameset) causes no
problems.
There is no difference between using readfile, fpassthru, or fread.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=19886&edit=1