#40596 [Fbk->Bgs]: Running two PHP scripts causes Apache freeze

ID: 40596 Updated by: tony2001@php.net Reported By: karldray at interchange dot ubc dot ca -Status: Feedback +Status: Bogus Bug Type: Apache2 related Operating System: Windows XP SP2 PHP Version: 5.2.1 New Comment: Not PHP problem. Previous Comments: ------------------------------------------------------------------------ [2007-02-22 22:37:51] fmk@php.net I Think this is an IE problem and has nothing to do with PHP or Apache. Try the same thing in Firefox and you will not see this problem. IE seams to have a limit of two connections to the same server at any time. ------------------------------------------------------------------------ [2007-02-22 22:36:49] karldray at interchange dot ubc dot ca Bug closed: I just noticed that while the first two scripts are running, Apache still responds fine to requests coming from other clients. There must simply be a limit of two simultaneous requests per client that Apache is enforcing. Now I just need to figure out how to change this. ------------------------------------------------------------------------ [2007-02-22 22:31:21] tony2001@php.net Please make sure you have a clean system. I.e. no firewalls, no third-party applications that might affect it. It would be good if try it on another machine. Personally I do not believe an issue like this might come unnoticed, so it looks like your local problem. ------------------------------------------------------------------------ [2007-02-22 22:20:50] karldray at interchange dot ubc dot ca Description: ------------ While two PHP scripts (or two instances of the same script) are running, Apache (2.2.4) stops responding to any new requests (even for non-php pages) until one of them finishes. It doesn't seem to matter what the scripts are actually doing; the same problem occurs when they're doing any of the following: -performing calculations (e.g. counting from 1 to 10000000) -blocking on socket functions -sleep() ing Reproduce code: --------------- wait.php: <?php sleep(15); ?> 1. Open two browser windows and point them both to wait.php so that they're running at the same time. 2. Before they finish, open a third browser window and point it to any other URI on the server (even a non-php page). Expected result: ---------------- The third window should load immediately. Actual result: -------------- The third window does not load until one of the two PHP scripts finshes. Note: If the third request is for a PHP page containing an error_log() at the very beginning, then the logfile output is not generated as long as the first two pages are running (suggesting that Apache isn't getting around to starting PHP during this time). ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40596&edit=1