Re: Why gc --auto is called so rarely?

Re: Why gc --auto is called so rarely?

[Ilya Kantor]

...It seems sane to git gc --auto from command that are expected to take time.

That's probably the reason why it's not called on commits and called on receive-pack. 

But then why call it on merges? Especially on those that have no conflicts and should run fast.
Also, merges are not supposed to introduce unreachable objects.

P.S. The old gmane discussion referenced by some previous posts on this subject is lost.

Re: Why gc --auto is called so rarely?

[Eric Sunshine]

On Sun, Nov 19, 2017 at 12:04 PM, Ilya Kantor <ilya.a.kantor@icloud.com> wrote:
> P.S. The old gmane discussion referenced by some previous posts on this subject is lost.

You can find old gmane conversations at https://public-inbox.org/git/
by searching for "gmane:<id>" in the search field, where <id> is the
gmane ID number of the message.

Re: Why gc --auto is called so rarely?

[Junio C Hamano]

Ilya Kantor <ilya.a.kantor@icloud.com> writes:

> ...It seems sane to git gc --auto from command that are expected to take time.
>
> That's probably the reason why it's not called on commits and
> called on receive-pack.
>
> But then why call it on merges? Especially on those that have no
> conflicts and should run fast.  Also, merges are not supposed to
> introduce unreachable objects.

The primary thing we want the users get out of running "gc --auto"
during these operations are not the removal of unreachable garbage.
It is primarily run to reduce the number of loose objects and
prevent great many numbers of tiny packfiles from being accumulated,
so the places you see calls to it tend to be after creating new
objects in the repository.

Why gc --auto is called so rarely?

[Ilya Kantor]

Hello,

I tried to find places where git gc --auto is called, and found that
there's only a few.

First, in *some* merges. That is, if there was a conflict during the
merge, that is resolved, then it's not called.

Then in
* receive-pack
* fetch
* am

Is there any logic in such assignments? Why there?

In particular, gc --auto was called in commits earlier, but not in the
recent versions of git.

---
Best Regards,
Ilya Kantor