Interactive rebase on large repositories is now unusably slow

[drobilla]

At some point in the past couple of months or so (sorry, I haven't narrowed this down more yet), interactively rebasing in magit (from Melpa) has gotten dramatically slower. So much so that I've had to resort to interactive rebasing from the command line.

Magit 20180717.1801, Git 2.14.3 (Apple Git-98), Emacs 25.3.1, darwin

The issue is present with a clean magit-only emacs instance. Before the interactive rebase window finally pops up, emacs is locked up, and the CPU time is all going to git in the command:

/usr/local/bin/git --no-pager --literal-pathspecs -c core.preloadindex=true -c log.showSignature=false branch --remote --contains xxxxxxxxxxx

It's possible something has changed with this particular repository, though the issue occurs for me across various checkout and operating systems (Linux and MacOS). If I run this command manually in a terminal, it also takes a very long time to complete. However, if I do an interactive rebase from the terminal using a different editor, everything is fine.

Trying this command out manually, I've narrowed it down to the --remote option. Without specifying this, the command is a lot faster (still a bit slow, but usable). It looks this this arrived in a7da211

If this functionality is necessary, could perhaps a configuration option be added to disable it?

[tarsius]

I haven't narrowed this down more yet ... It looks this this arrived in a7da211

He said ... and went on to do it 😄

Thanks!

[tarsius]

I haven't narrowed this down more yet ... It looks this this arrived in a7da211

He said ... and went on to do it 😄

Thanks!

[drobilla]

Yeah, I ended up digging a little more than anticipated when I started writing that :)

Awesome, seems fine now. Thanks!

[drobilla]

Yeah, I ended up digging a little more than anticipated when I started writing that :)

Awesome, seems fine now. Thanks!