Boyle Owen wrote:
-----Original Message-----From: Stan Kaushanskiy [mailto:stan@xxxxxxxxxxxxx] Sent: Wednesday, September 27, 2006 9:16 PMTo: users@xxxxxxxxxxxxxxxx Subject: [users@httpd] Apache 2.2.3 CGI OS 5 Issue under load Hi All, I am running a cgi program through Apache 2.2.3. Usually everything works fine,but sometimes under load and after about 1-2 hours continuous requests,I get the following error in the apache log:[Tue Sep 26 19:08:16 2006] [error] [client 192.168.26.155] (OS 5)Access is denied. : couldn't set child process attributes: E:/php/php-cgi.exe [Tue Sep 26 19:08:16 2006] [error] [client 192.168.26.155] (OS 5)Accessis denied. : couldn't spawn child process: E:/php/php-cgi.exe[Wed Sep 27 11:25:22 2006] [error] [client 192.168.26.155] (OS 5)Accessis denied. : couldn't set child process attributes: E:/cgi-bin/UploadProcessor.exe[Wed Sep 27 11:25:22 2006] [error] [client 192.168.26.155] (OS 5)Access is denied. : couldn't spawn child process: E:/cgi-bin/UploadProcessor.exeThis error happens with both PHP 5.1.6 as well as with a CGI I compiledfrom C++, so it cannot be a php issue.I have around 50 - 150 clients hitting the server every 10 seconds. TheCGI processes are "long-lived" they take 1 second to 3 minutes to do their thing.Probably some statistician could come up with the correct Bayesian formula for this, but off the top of my head, if you have about 10 hits/sec and each hit takes about a minute to process (mid-point of your ranges), then every second you add 10 processes and it takes 1 minute before any resources are free again, so you peak at about 600 concurrent processes. That seems a lot for a PC... I would guess that you're simply running out of resources.
I never have more than 150 concurrent connections. I have plenty of RAM free. What resources might I be running out of? Is there any way to find out which resources are the problem?
thanks, stan
Rgds, Owen BoyleDisclaimer: Any disclaimer attached to this message may be ignored.This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please notify the sender urgently and then immediately delete the message and any copies of it from your system. Please also immediately destroy any hardcopies of the message. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. The sender's company reserves the right to monitor all e-mail communications through their networks. Any views expressed in this message are those of the individual sender, except where the message states otherwise and the sender is authorised to state them to be the views of the sender's company.I have not noticed the lifetime of the cgi processes affecting this behavior. When these errors happen the clients get 500 errors. Prior to 2.2.3 I ran Apache 2.0.52 and the same issues happened. My Setup: P4 3Ghz HT 1 GB Ram Windows XP Pro Apache 2.2.3 any ideas? thanks, stan ---------------------------------------------------------------------The official User-To-User support forum of the Apache HTTP Server Project.See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx--------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
-- Stan KaushanskiyPC-Doctor, Inc. 9805 Double R Boulevard, Suite 301
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