Extend jcmd to java application level

Denghui Dong denghui.ddh at alibaba-inc.com
Thu Oct 7 13:58:27 UTC 2021

Hi team,

The `jcmd` command can be used to call some built-in diagnostic commands in vm.
Can we consider extending it to the java layer like perf data, so that Java developers can
customize their diagnostic commands and then call them through `jcmd`?

One application scenario I can think of for this extension is that some statistical information
may be collected in a java application. Triggering the output of this statistical information through
the `jcmd` command seems to me relative to other mechanisms that trigger output (such as through
an HTTP service, or periodic Printing) is more convenient.

Any input is appreciated.

Denghui Dong

More information about the hotspot-runtime-dev mailing list