HTTP Server Is Either Slow Or Stops Responding When Installed On A NFS Mounted Drive
(Doc ID 560853.1)
Last updated on AUGUST 20, 2021
Applies to:Oracle HTTP Server - Version 10.1.2.0.2 to 10.1.2.3 [Release AS10gR2]
Information in this document applies to any platform.
If HTTP Server is delivering pages slowly:
- Accessing the HTTP Server for a static page is extremely slow.
- The page displayed in about 10-30 seconds.
- If the page is requested again after it is displayed, then it does display normally with no delay.
- After waiting a period of time, then if the same static page is requested again it will have a 20-30 second delay.
- There are no errors recorded in logs or any other information in any other logs
If HTTP Server is not responding:
- OPMN is restarting HTTP Server because it cannot ping it
- From the $ORACLE_HOME/opmn/logs/ipm.log:
- The $ORACLE_HOME/Apache/Apache/logs/access_log shows that requests stop just before it cannot be pinged.
- This occurs randomly with hardly anyone using the system
- When it stops responding, the number of httpd processes is well below the MaxClients value set in $ORACLE_HOME/Apache/Apache/conf/httpd.conf
- The "top" command shows no httpd processes consuming large amounts of CPU before the crash.
- "netstat" output looks normal
- The same problem occurs if HTTP Server is started outside of OPMN i.e $ORACLE_HOME/Apache/Apache/bin/.apachectl start
- A small load test accessing index.html, shows that HTTP Server stops accepting requests after a short period of time.
- At the point it stops accessing requests, netstat shows that the Listen port is still available, and its still possible to telnet to the Listen port. However a GET request from the telnet session, and a request from a browser just hang.
- A "ps -edf | grep httpd" shows that httpd processes still exist, but are nowhere near MaxClients.
- This proves the issue in with HTTP Server itself.
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document
My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.