git/list[1] front-page[2] threads[3] people[4] search[5] about
 

RE: [PATCH/RFC] Always auto-gc after calling a fast-import transport

From
Felipe Contreras <felipe.contreras@gmail.com>
Date
May 16, 2014, 13:08 UTC
Message-ID
<53760db99f8ae_6899d4d2f8c6@nysa.notmuch>
In-Reply-To
<20140515053722.GB12133@camelia.ucw.cz>
Stepan Kasal wrote:
Show 12 quoted lines
> From: Johannes Schindelin <johannes.schindelin@gmx.de>
> Date: Mon, 9 Apr 2012 13:04:35 -0500
> 
> After importing anything with fast-import, we should always let the
> garbage collector do its job, since the objects are written to disk
> inefficiently.
> 
> This brings down an initial import of http://selenic.com/hg from about
> 230 megabytes to about 14.
> 
> In the future, we may want to make this configurable on a per-remote
> basis, or maybe teach fast-import about it in the first place.

Actually I tested this patch and it makes no difference. Before and after the patch the repository size is exactly the same (and so is the run-time).

That is because after the initial import there are no loose objects, every thing is into one big pack, so `git gc --auto` does nothing.

> Could anyone on the list try to reproduce the performance problem
> that triggered this?
I'd say this patch is not doing anything in recent versions of Git.
-- 
Felipe Contreras

-- 
-- 
*** Please reply-to-all at all times ***
*** (do not pretend to know who is subscribed and who is not) ***
*** Please avoid top-posting. ***
The msysGit Wiki is here: https://github.com/msysgit/msysgit/wiki - Github accounts are free.

You received this message because you are subscribed to the Google
Groups "msysGit" group.
To post to this group, send email to msysgit@googlegroups.com
To unsubscribe from this group, send email to
msysgit+unsubscribe@googlegroups.com
For more options, and view previous threads, visit this group at
http://groups.google.com/group/msysgit?hl=en_US?hl=en

--- 
You received this message because you are subscribed to the Google Groups "msysGit" group.
To unsubscribe from this group and stop receiving emails from it, send an email to msysgit+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
Previous: Felipe Contreras
Message 3 of 3 in “Always auto-gc after calling a fast-import transport”
  1. Always auto-gc after calling a fast-import transportStepan Kasal, May 15, 2014
  2. Felipe ContrerasMay 15, 2014
  3. Felipe ContrerasMay 16, 2014

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.