Re: [PATCH 1/2] builtin/repack.c: simplify cruft pack aggregation

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On Thu, Feb 27, 2025 at 11:23:02AM -0800, Elijah Newren wrote:
> > The original idea behind this approach was that smaller cruft packs
> > would get combined together until the sum of their sizes was no larger
> > than the given max pack size.
> >
> > There is a much simpler way to achieve this, however, which is to simply
> > combine *all* cruft packs which are smaller than the threshold,
> > regardless of what their sum is. With '--max-pack-size', 'pack-objects'
> > will split out the resulting pack into individual pack(s) if necessary
> > to ensure that the written pack(s) are each no larger than the provided
> > threshold.
>
> That doesn't really "achieve this" though, unless the antecedent of
> "this" isn't what was described in the previous paragraph but
> something elsewhere.  I suspect your actual meaning was something
> along the lines of "There is a much simpler way to combine cruft
> packs, however, which..." ?

Great suggestion, thanks. I swapped out "achieve this" for your
recommendation.

> > This yields a slight behavior change, which is reflected in the removed
> > test. Previous to this change, we would aggregate smaller cruft packs
> > first, whereas now we will opportunistically combine as many cruft packs
> > as possible. As as result, that test is no longer relevant, and can be
> > deleted.
>
> I like the idea, since it sounds like it should be simpler...

Heh. I don't know why I wrote it the way it was originally. I wrote the
second patch in this series first, and when I was trying to explain how
multi-cruft pack aggregation works I paused and then wrote what is now
the first patch.

Hindsight is 20/20, I suppose ;-).

Thanks,
Taylor




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