New Plugin for VisualVM - Buffer Monitor
By Tomas Hurka on Jun 23, 2009
Buffer Monitor Plugin monitors the resources associated with pools of buffers. Plugin can monitor direct buffers that are allocated outside of the garbage-collected heap (by ByteBuffer.allocateDirect), and memory-mapped buffers, created by mapping a region of a file into memory (using FileChannel.map). The plugin uses newly added java.nio.BufferPoolMXBean to monitor the buffers usage. BufferPoolMXBean is available only in JDK 7 (build 36 and newer), so if you want to use this plugin, your monitored application must run on the latest JDK 7 build available here. More details about buffer pools monitoring are available in Alan Bateman's blog. The plugin is available at VisualVM 1.1.1 plugin center.