On Thu, 18 Sep 2025 14:57:44 GMT, Ivan Bereziuk <[email protected]> wrote:
> `jcmd` provides great diagnostics but many commands lack a timestamp in their > output. > Adding a timestamp to the output of some would add value for those debugging > JVM data. > > Some diagnostic commands already provide timestamps. For example > `Thread.print` already prints one of "yyyy-MM-dd HH:mm:ss" format. > > Adding timestamps to all diagnostic `jcmd` commands with a non-throw-away > STDOUT. > > The exceptions are: > * `VM.uptime` - command run with `-date` argument will also print a timestamp; > * `VM.system_properties` - already lists timestamp > * `Thread.dump_to_file` - the content dumped to file already has a timestamp; > * `VM.version` It might be useful for @larry-cable to comment on this too. I think he's exploring some of these command serving up JSON rather than plain text. Any "infrastructure" that print a plain text timestamp could mess that up. ------------- PR Comment: https://git.openjdk.org/jdk/pull/27368#issuecomment-3323199390
