Aquib,
On 10/28/20 08:31, Aquib Khan wrote:
Hi,
We are using Tomcat Version : 8.5.53.
OS Name: Linux
OS Version: 3.10.0-1127.18.2.el7.x86_64
We have a requirement where we wanted a logger to get printed in
Catalina.out when Tomcat reaches it’s max thread limit.
We reduced values of properties : /minSpareThreads, maxThreads and
acceptCount/ in server.xml. Also changed logging level to ALL/DEBUG in
logging.properties.
When we made higher number of requests to tomcat we face
*/java.net.SocketTimeoutException: Read timed out/ *Exception on client
side but no Log or Exception on Tomcat side.
What change we have to perform, so that tomcat indicates it’s thread
limit has reached or it is about to reach that limit.
Tomcat doesn't bother to log when it hits its maximum thread limit
because it's an unremarkable event. Who cares that you've hit your max?
Well, obviously YOU care.
The MXBeans for thread pools, etc. don't have any subscribable events.
Theoretically, you could listen for attribute change notifications from
an MXBean but none have been programmed into Tomcat.
Attaching screenshot of server.xml and Logging.properties.
Screenshots don't make it to this list. You gotta use text to communicate.
If it's not important to know the exact moment you hit your high-water
mark, you could poll Tomcat via JMX to find out what the current
max-threads is and the current active-threads. If you have
active-threads=max-threads=max-max-threads then you know that your
server is saturated.
-chris
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