Question about benchmark finish and non daemon threads

[Zoltan Farkas]

I run benchmarks continuously, by the time I look at the results the process is long gone.

When this happens Java flight recorder data is not persisted, which is inconvenient.

To help with this, I am printing out all non daemon threads on benchmark teardown... 

Thought it would be useful of jmh would provide this detail in case the benchmark is not finishing properly...

--z


> On Jun 25, 2015, at 9:18 AM, Aleksey Shipilev <aleksey.shipilev at oracle.com> wrote:
> 
> Hi Zoltan,
> 
>> On 06/25/2015 03:29 PM, Zoltan Farkas wrote:
>> I see at the end of the benchmark:
>> 
>> <JMH had finished, but forked VM did not exit, are there stray
>> running threads? Waiting 14 seconds more…>
>> 
>> Would it be possible before to add some code to list the non daemon
>> threads still running? would help with troubleshooting…
> 
> Is there a reason you can't use "jstack" against the forked VM to figure
> this out?
> 
> -Aleksey.
>