如何通过 JMX 获取网络 I/O 和磁盘 I/O

Question

I have been working on to get system mertics like CPU, Memory, Network I/O, Disk I/O using JMX.

• For CPU i have used function OperatingSystemMXBean.getSystemLoadAverage() and got the load of CPU.

• For Memory i have used functions OperatingSystemMXBean.getTotalPhysicalMemorySize() and OperatingSystemMXBean.getFreePhysicalMemorySize().

Is there any function to get Network I/O and Disk I/O through JMX?

Answer 1

Most VMs (all?) do not expose that data. You would need to use a library like sigar (source is at github ), that can gather those values and then expose the return values of sigar via JMX.

We are using sigar with success in http://rhq-project.org/

Answer 2

I found out that SIGAR API will get the System Metrics easily.