Red Hat Runtimes

Join us at DevNation and learn about Shenandoah. You've tuned your Java application so that you can promise response times of 10ms and then a GC pause happens. You want to scale up your enterprise application but suddenly your GC pauses go from 50ms to 2 minutes. You need a garbage collector that works while your program is running so that you don't hit the GC wall. Current GC technology works really well for managing pause times right up until...

I had an interesting question from one of our developers here at Red Hat: "When I was investigating a performance issue in our project after switched to oracle's jdk7u40, I found a performance regression in class sun.net.www.protocl.http.HttpURLConnection.getOutputStream(). This method takes more cpu time than with jdk7u25." And it does, much more time. In fact, when fixedLengthStreamingMode is enabled HttpURLConnection.getOutputStream() takes ten times as long: about 1.2 milliseconds versus 47 microseconds. So, I traced through getOutputStream() deep into the class library...

We at the AArch64 Port Project are pleased to announce the first release of OpenJDK on the Linux/AArch64 platform. It is the first implementation of the Java platform to be made available for this processor architecture. For those who haven't heard: AArch64 is the latest architecture from ARM. It is an entirely new instruction set, not compatible with the earlier generation of 32-bit ARM processors, so we need a new OpenJDK port for it. This is a complete port, with...