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Posted to dev@reef.apache.org by Jason Jeong <cu...@gmail.com> on 2015/10/30 12:25:46 UTC

Meters in Wake

Hi everyone,

I have a question on Wake.

What's the purpose of the 'Meter' class in Wake?
They seem to be used in EStages, but I'm not sure what these Meters are
doing.
Could anyone kindly help me?

Thanks,
Jason

Re: Meters in Wake

Posted by Jason Jeong <cu...@gmail.com>.

Thanks, Markus and Gon!
Now I understand why we have those EStage classes instead of directly using
Java ExecutorServices.

Cheers,
Jason


On Fri, Oct 30, 2015 at 11:37 PM, Byung-Gon Chun <bg...@gmail.com> wrote:

> Hi Jason,
>
> As Markus pointed out, we used Wake profiling for a visualization demo.
>
> The original purpose is to profile the load of the stage and to autotune
> how much threads to use per stage. This is one of the to-do items.
>
> -Gon
>
>
> On Fri, Oct 30, 2015 at 9:37 PM, Markus Weimer <ma...@weimo.de> wrote:
>
> > On 2015-10-30 12:25, Jason Jeong wrote:
> >
> >> What's the purpose of the 'Meter' class in Wake?
> >>
> >
> > I *believe* those were used for a pretty nifty demo at VLDB 2014, where
> we
> > could show the event flow in Wake in a nice HTML based visualization. Gon
> > and Rusty would know better.
> >
> > Markus
> >
> >
>
>
> --
> Byung-Gon Chun
>

Re: Meters in Wake

Posted by Byung-Gon Chun <bg...@gmail.com>.

Hi Jason,

As Markus pointed out, we used Wake profiling for a visualization demo.

The original purpose is to profile the load of the stage and to autotune
how much threads to use per stage. This is one of the to-do items.

-Gon

On Fri, Oct 30, 2015 at 9:37 PM, Markus Weimer <ma...@weimo.de> wrote:

> On 2015-10-30 12:25, Jason Jeong wrote:
>
>> What's the purpose of the 'Meter' class in Wake?
>>
>
> I *believe* those were used for a pretty nifty demo at VLDB 2014, where we
> could show the event flow in Wake in a nice HTML based visualization. Gon
> and Rusty would know better.
>
> Markus
>
>

-- 
Byung-Gon Chun

Re: Meters in Wake

Posted by Markus Weimer <ma...@weimo.de>.

On 2015-10-30 12:25, Jason Jeong wrote:
> What's the purpose of the 'Meter' class in Wake?

I *believe* those were used for a pretty nifty demo at VLDB 2014, where 
we could show the event flow in Wake in a nice HTML based visualization. 
Gon and Rusty would know better.

Markus