Am 09.01.19 um 11:14 schrieb Mark Thomas: > On 08/01/2019 23:51, Mason Meier wrote: >> Hello, >> >> I'm running Tomcat-8.5 with TLS and I've noticed substantial memory growth >> with requests over time, to the point that if I run Tomcat in Docker and >> make constant requests to it, Docker will kill the container due to >> excessive memory utilization. The problem occurs with standalone Tomcat as >> well. Over the course of millions of requests, the memory usage of the >> Tomcat process grows continuously, seemingly without bound. > I've behaviour like this in the past. From memory there was some caching > in the TLS implementation at the root of most of it that could be > controlled with some system properties. > > It may be you are seeing the same thing. Or you may have found a memory > leak. The next step would be to use a profiler to see where the memory > is being used. > >> I've done a fair amount of testing on AWS EC2 instances and some local >> machines, and here are my observations: >> * 'org.apache.tomcat.util.net.openssl.OpenSSLImplementation' seems to >> increase memory utilization more quickly and consistently than >> 'org.apache.tomcat.util.net.jsse.JSSEImplementation'. The >> JSSEImplementation doesn't cause the memory to grow in certain setups. > Can you share some configs that demonstrate an issue and some that > don't. That might help narrow down what is going on. > > Mark >
We do also see frequent OOM memories with the latest Tomcat versions. Free memory shrinks to a critical value. With previous versions this behaviour was not here. However, we use a limited machine and I need to investigate further. Markus > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
