JMH reports

Julien Nicoulaud julien.nicoulaud at gmail.com
Mon May 6 04:42:44 PDT 2013


2013/5/6 Aleksey Shipilev <aleksey.shipilev at oracle.com>

> On 05/04/2013 03:53 PM, Julien Nicoulaud wrote:
> > Here is some feedback on JMH reports after setting it up on a project:
>
> Thanks!
>
> >  * The most convenient format for automating stuff is CSV, but
> > unfortunately the CSV report only contains raw iterations data, not the
> > per-test "Mean" and "Mean error" as shown in the text report. Maybe this
> > could be solved by allowing several output formats at the same time, and
> > add a "aggregated CSV" output format ?
>
> Yes, we are considering this. You are not alone in these desires :)
>
Great, thanks :)

>
> >  * When redirecting output to a file with the --output option, there is
> no
> > more output in the console. It would be great to allow to use both at the
> > same time ?
>
> Nope, that fits the definition of "redirecting everything into the
> file". I would guess you'd rather want to tee the console output to file
> to get the desired effect. Although, we will certainly consider this
> when reworking the output formatters.
>
OK, also one point more in favor of not redirecting everything: the report
contains the logs of the code under tests, which breaks the CSV syntax for
example. So IMHO it would be better if the --output option just meant
"report file" with only JMH output. As you said, users can use shell
redirections if they want to redirect everything.

>
> Thanks,
> -Aleksey.
>
>
Cheers,
Julien


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