[Vm-dev] [Pharo-project] jenkins cog - slow monticello on osx

[Eliot Miranda]

this is a job for the VM profiler.  I expect it will zero in on the cause
PDQ.

On Thu, Sep 22, 2011 at 10:32 AM, Tudor Girba <tudor at tudorgirba.com> wrote:

>
> Hi,
>
> I looked a bit into the slowness of the OS X Jenkins Cog VM with
> Monticello. The problem exists and it is reproducible.
>
> I performed the following experiments using the following script:
>
> Time millisecondsToRun:
>                [ 1 to: 100 do: [:x |
>                        | window |
>                        window := MCWorkingCopyBrowser new show.
>                        window delete ] ]
>
> I ran it on the same image using the following vms (on Mac OS X Lion):
> - Jenkins VM from 31.08.2011
> - Cog VM r2489
>
> I ran the scenario twice with two different setups:
>
> 1. I placed the image in an empty folder:
>
> Cog VM 2389: 4808 ms
> Jenkins VM: 7345 ms
>
> 2. I places the image in a folder that already had a large package-cache
> with 7400 mcz files:
> Cog VM: 4867 ms
> Jenkins VM:      50754 ms
>
>
> So:
> - even if there is no package cache, the Jenkins VM seems to perform 1.5
> times slower
> - when there is a package-cache, it becomes hardly unusable.
>
> Cheers,
> Doru
>
>
> On 8 Sep 2011, at 12:10, Tudor Girba wrote:
>
> > Hi,
> >
> > I did not forget about this, but I did not have enough time yet.
> >
> > Cheers,
> > Doru
> >
> >
> > On 26 Aug 2011, at 14:40, Igor Stasenko wrote:
> >
> >>
> >> On 26 August 2011 13:30, Tudor Girba <tudor at tudorgirba.com> wrote:
> >>> Hi,
> >>>
> >>> Since a couple of weeks I am working with the Cog VM built on Jenkins:
> >>> https://ci.lille.inria.fr/pharo/view/Cog/job/Cog-Mac-Cocoa/
> >>>
> >>> Here is a little feedback. It worked quite well, the only problem is
> that Monticello is really slow in the Moose image. This means that even
> opening the Monticello Browser takes several seconds.
> >>>
> >>> I thought that this might be induced by something in the Moose image,
> but if I try with the Elliot's VM (2489), it works blazingly fast.
> >>>
> >>
> >> Thanks for the  information, Tudor.
> >> Apparently the difference between Eliot's VM and Cog-Mac-Cocoa that
> >> they are using different frameworks
> >> (Carbon vs Cocoa)
> >> and i don't know too much details about the difference there.
> >> John or Esteban may have better insights how to fix that.
> >>
> >>> Cheers,
> >>> Doru
> >>>
> >>>
> >>> --
> >>> www.tudorgirba.com
> >>>
> >>> "The coherence of a trip is given by the clearness of the goal."
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >>
> >> --
> >> Best regards,
> >> Igor Stasenko AKA sig.
> >
> > --
> > www.tudorgirba.com
> >
> > "Yesterday is a fact.
> > Tomorrow is a possibility.
> > Today is a challenge."
> >
> >
> >
>
> --
> www.tudorgirba.com
>
> "Sometimes the best solution is not the best solution."
>
>


-- 
best,
Eliot
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