If you're looking to just monitor metrics remotely, writing a JMX tool is probably the recommended way of doing it, or using an existing tool like NewRelic's agent or Netflix's Servo library to acquire this data via JMX if you don't want to write it yourself. JFR is an always-on profiling mechanism which periodically dumps data that you can process, but in non-streaming mode, it will dump contents after a particular amount of data is collected. Top Linux Process Monitoring Linux Top command is a performance monitoring program which is used frequently by many system administrators to monitor Linux performance and it is available under many Linux/Unix like operating systems. If you're Java 14 o above, then you can use JFR Streaming to process the data as it comes off (added in JEP 394). Here, we are going to see some of the Command Line Tools to Monitor Linux Performance 1. However, if you want to get this information regularly, you should look at writing a program to query either JMX ( ) or by using JFR to gain this data. Rather than the CPU/RAM stats seen in Top and Htop, it will display disk read, write, swap in, and IO for each process. On the storage side of things, Iotop provides Linux disk performance monitoring. Use Iotop and Iostat for Linux disk performance monitoring. For example, you can get information about the process' use of memory by running jcmd GC.heap_info. 33 Command Line Tools to Monitor Linux Performance 648 0 JTable of Content 1. The tcpdump command looks like this: tcpdump -i eth0. Run jcmd help to find out what your JVM supports. You can get some this information by running jcmd repeatedly against your process.
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