On Wed, Apr 22, 2009 at 1:40 PM, Rob Beezer <goo...@beezer.cotse.net> wrote:
>
> Here's my $0.02 worth on worksheet management as part of the notebook
> interface.
>
> For most new users the notebook is the face of Sage initially.  And it
> is very impressive.  But I worry about users seeing the (very
> frustrating) slowdowns that Jason and I experienced after heavy use
> (tens or hundreds of worksheets) for a long period (months), and I
> really worry about server setups at schools (next fall!) where the
> growth of the snapshot directories causes severe headaches for
> sysadmins that are not very familiar with the internals of Sage.
>
> There are a good many patches out there to address small aspect of
> these problems.  In #4886 and #4887 Timothy Clemans has some good
> ideas for renaming some variables and making default save periods
> configurable from the "Settings" page of the notebook.  However, these
> patches seem to depend on a variety of other patches, some with
> distinctly different purposes, with #4135 being a major obstacle to
> freeing up all the dependencies.
>
> It would be great if somebody who understands the notebook, CSS,
> templates, and file management were to take the best ideas from these
> patches and address the core problems in one, or a few, pointed
> patches.  Unfortunately, I am not that person, but I'd be ready to
> help and review work done in this direction.  Done right, this might
> obsolete several other patches and then free up others that would also
> be welcome enhancements to the notebook.

I would just forget about all that crap, and write
something so there can be at most say 30 snapshots for any given
worksheet. Full stop.  How those 30 are divied out is a matter of
algorithms, but the simplest choice is just delete all but the 30 most
recent.

William

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