Linux: <defunct> unresponsive processes hold up jcmd, jps

[Chris Plummer]

Is it possible to remove or rename the hsperf file?

Chris

On 4/30/18 6:34 AM, Thomas Stüfe wrote:
> Hi all,
>
> as the subject says, I have a defunct, unkillable java process on my
> machine. Why it is there I have no idea and no great motivation to
> analyze, it is a remnant from an earlier debug session and quite
> unkillable.
>
> However, it seems jps, jcmd and probably other tools too stumble over
> it. An invocation of jcmd to list current java processes, normally
> instantaneous, takes long.
>
> I assume the tool sees the still existing
> /tmp/hsperfdata_thomas/<pid>, attempts to connect, and times out?
> Would there be a way to avoid attempting to connect to a defunct
> process?
>
> Thanks, Thomas