Since we don’t have any nice NMT (Native Memory Tracking) MBean in HotSpot (yet), and therefore not in the JMC console, I thought I’d show how it can be done using command line arguments and JCMD. Please note that you’ll get a 5-10% performance hit if you enable this. Step 1 – Enabling NMT This is done by using the following command line: -XX:NativeMemoryTracking=[off|summary|detail] Where the dif
22 May 2013 I've been working with different Java web applications since the late 90's and when there have been performance issues, I would say that 99% of the time, the problem is the database, or rather how it is used. At my last company (Josh) we had a really good connection pool wrapper, that collected data and made us know exactly what happens to the database. But that code isn't Open Source
Alex ZhitnitskySeptember 23rd, 2014Last Updated: September 30th, 2014 Raygun, Stack Hunter, Sentry, Takipi and Airbrake: Modern developer tools to help you crush bugs before bugs crush your app! With the Java ecosystem going forward, web applications serving growing numbers of requests and users’ demand for high performance – comes a new breed of modern development tools. A fast paced environment
JVMWatcher is the application which outputs the log of the JSON format at the constant period, watching in the condition of JavaVM. JVMWatcher is the Java application which collects the CPU usage rate and the memory usage of more than one JavaVM to the constant period. It developed this JVMWatcher to realize the fluentd plug-in ( jvmwatcher ) which collects the operating status of JVM. JVMWatcher
Starting in 2012, Zorka was the first open source Java application monitoring agent featuring full transaction tracing via bytecode instrumentation. Both agent and collector source codes are publicly available on GPLv3 license, so there is no vendor lock-in and no license fees. Agent-collector protocol is well documented - old ZICO/TCP protocol via source code, upcoming ZICO/HTTP uses CBOR encodin
With New Relic's Java agent, you can track everything from performance issues to tiny errors within your code. Every minute the agent posts metric timeslice and event data to the New Relic user interface, where the owner of that data can sign in and use the data to see how their website is performing. Use the New Relic Java agent to solve your app's performance issues with our My app is slow tutor
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