I have been experiencing this errors in my linux servers. Resource temporarily unavailable [fork] & insufficient memory for the Java Runtime Environment to continue I have increased the nproc limit in my server to 2047. And I hope that resourse unavailable message will not come again But while entering the java command itself, it is … Read more
I know this is a question already discussed, but I couldn’t find a method to get peace of mind. Basically we have a java web application that runs under a tomcat application server, specifically: Java HotSpot(TM) 64-Bit Server VM; 1.8.0_112; 25.112-b15; mixed mode Tomcat 7.0_Tomcat7.0.73 Windows Server 2012 R2 (6.3.9600) Our application is becomind too … Read more
I am looking for a way with which I can find any and all programs which are using Java on a windows server. Is there a cmd command or something similar which would give me a list of all programs using java? Thanks Edit: I am basically about to remove Java from the server but … Read more
The real context here is elasticsearch but I’m curious what would happen more generally (minecraft / jetty / etc). When an OS process is out of system memory, you can see this behavior by checking swap. If a box isn’t swapping then it doesn’t need more memory (I believe this is mostly always true). What … Read more
We have a tomcat7 running on top of docker container (official docker image). On rush hours after some time the tomcat hangs and no longer able to serve reqeusts (many requests are stuck and waiting indefinitely). Here is the ‘manager-app’ details: JVM Free memory: 627.21 MB Total memory: 1751.50 MB Max memory: 10923.00 MB http-apr-8080 … Read more
I am trying to understand why the following occurred: I have a Docker container with Yarn and Spark running fine except that the timestamp of that container was minus X hours of what I wanted it to be. So when I was running date it was returning a timestamp minus X hours of the current … Read more
I am getting the following errors on the IBM Domino Server console. Running 9.0.1 FP8 Win64 HTTP Server: Using Web Configuration View HTTP JVM: JVMJ9VM015W Initialization error for library j9gc28(2): Failed to instantiate compressed references metadata; 200M requested JVM: The Java Virtual Machine creation returned an invalid JVM machine pointer. JVM: Java Virtual Machine failed … Read more
I recently got tasked with a project to move an Java application hosted with Tomcat that we wrote 3-4 years ago and that has been running in a clients data center to AWS. Right now we’re in the middle of load testing and have about 20% of all traffic going to the AWS, around 800 … Read more
Our service runs on AWS on m5.12xlarge nodes (48 cores, 192 G RAM) on Ubuntu 16.04. We use Java 8. For our service we allocate about 150G as max heap size. We have no swap on the node. The nature of our service is that it allocates a lot of large short-lived objects. Apart from … Read more
ElasticSearch 5.6.7 throws somewhat misleading following error and refuse to start: [2018-08-02T10:07:50,333][ERROR][o.e.b.Bootstrap ] [esm56n3] node validation exception [2] bootstrap checks failed [1]: memory locking requested for elasticsearch process but memory is not locked [2]: system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own … Read more
