[squeak-dev] [ANN] New source.squeak.org prototype

David T. Lewis lewis at mail.msen.com
Fri Sep 6 23:22:01 UTC 2013

Bravo! This is great stuff.

I loaded Monticello-cmm.566 from the inbox, and I want to try out the
new 'browse mc origin' and 'browse mc versions' feature, which shows
up in the methods pane and class list pane as promised. But I can't
figure out how to activate them so they are not greyed out??? I'm trying
to browse a class in the sound package (just to see what it does), so
I added the http://box4.squeak.org:8888/trunk repository to package 
Sound in my MC browser, but no joy. How do I activate the 'browse mc versions'

Thanks for doing this Chris!


On Fri, Sep 06, 2013 at 04:46:46PM -0500, Chris Muller wrote:
> An on-going concern of the community is sustaining and improving our
> trunk development process.  Currently source.squeak.org employs an old
> version of SqueakSource running on an old Squeak 3.x image on an old
> interpreter VM.  I have deployed a prototype replacement on box4 with
> several improvements:
>   - It is running on the latest trunk image with a recent Cog VM.
>   - The SqueakSource package has been upgraded to generically support
> any type of backend instead of only a Filesystem-based back end.
>   - A new subclass for a Magma-based back end was added and used by
> the prototype.
>   - Startup time is > 10X faster than with the FileSystem (which uses
> ReferenceStream).
>   - Commits are > 100X faster because it's simply a DB commit rather
> than re-serializing the entire model with ReferenceStream for every
> change.
>   - However, we will not notice a speed up because we have hacked
> SqueakSource to bypass the Filesystem subclass for a
> save-the-image-every-hour persistence.  But this is unsustainable and
> dangerous.
>   - The SqueakSource-software now responds to SIGTERM to conduct a
> graceful shutdown and exit.
>   - Use of the Magma back end improves the SCM tool by letting us
> browse all 'mc versions' of any method or class-definition.  We can
> also browse the 'mc origin' of same -- which is just the oldest
> version it is known to exist in (which, if we would ensure ALL
> ancestry is present, then it will truly be the origin).  Happy
> birthday Tim Rowledge.
> I have done VERY minimal testing.  But we need to finally begin the
> process of moving this crucial component our community away from the
> costly Hetzner box and onto Gandi-based servers provided by the SFC,
> so please try it and provide feedback!
> To use the new prototype:
>   1) Use a recent trunk image.
>   2) Install Monticello-cmm.565 from the Inbox.  'browse mc versions'
> and 'browse mc origin' will be added to methods and class-list menus
> (but are initially grayed out).
>   3) Add this repository to Monticello:
>     MCHttpRepository
>         location: 'http://box4.squeak.org:8888/trunk'
>         user: 'id'
>         password: 'pw'
>   4) Add the above repository to whichever packages you wish to invoke
> the new SCM features.
>  - Chris
> PS -- This prototype only has data loaded for the trunk project as of
> about one week ago.  It is not kept in-sync with production trunk,
> this is just a test.

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