Hi, I am running a website with a load balancer (software) and three web servers, each of which deploys an instance of Tomcat 7. While the other two web servers look OK, there is one web server which often gives me trouble after restarting Tomcat.
Basically, the maxThread (2000) is reached and the server is almost not accessible. When I open the server:8080/manager of that server, I found that all the Stages under "http-nio-8080" are "S"! The values of "BSent" and "BRecv" are all 0 KB. What does that mean? To solve this problem, the only way I know is to restart Tomcat, but after several days, the problem emerges again. These three servers are deployed in exactly the same way, so it is very strange that one of them uses all 2000 theads, but the others use only less than 300 threads! Currently, the load balancer distributes 3/7 traffic to Server 1, 2/7 traffic to Server 2, and 2/7 traffic to Server 3. The problematic server is Server 2. Thanks Jian Wu
