'git gc' always run, on old kernel repo?

'git gc' always run, on old kernel repo?

[Jeff Garzik]

In order to apply a kernel patch diff'd against an older kernel, I ran

	git checkout -b tmp v2.6.23
	git-am --signoff --utf8 /g/tmp/mbox

The patch applied successfully, but each time I run this, it starts an 
automated 'git gc' run...  even if there is nothing useful to gc:

> [jgarzik@pretzel netdev-2.6]$ git-am --signoff --utf8 /g/tmp/mbox 
> Applying Add support for HT1100 SATA controller - sent from evolution
> Auto packing your repository for optimum performance. You may also
> run "git gc" manually. See "git help gc" for more information.
> Counting objects: 1, done.
> Writing objects: 100% (1/1), done.
> Total 1 (delta 0), reused 0 (delta 0)
> warning: There are too many unreachable loose objects; run 'git prune' to remove them.

IMO there is a broken hueristic in there somewhere...  I regularly run 
'git gc' on my repos...

	Jeff

Re: 'git gc' always run, on old kernel repo?

[Jeff Garzik]

Jeff Garzik wrote:
>> [jgarzik@pretzel netdev-2.6]$ git-am --signoff --utf8 /g/tmp/mbox 
>> Applying Add support for HT1100 SATA controller - sent from evolution
>> Auto packing your repository for optimum performance. You may also
>> run "git gc" manually. See "git help gc" for more information.
>> Counting objects: 1, done.
>> Writing objects: 100% (1/1), done.
>> Total 1 (delta 0), reused 0 (delta 0)
>> warning: There are too many unreachable loose objects; run 'git prune' 
>> to remove them.
> 
> IMO there is a broken hueristic in there somewhere...  I regularly run 
> 'git gc' on my repos...


Follow-up...   this is already becoming a PITA.

I am going through and rebasing multiple repos in the same repository... 
and it keeps running 'git gc' on each branch!  grrrr.

Step 1:
pull "../linux-2.6" into master branch of local repo.  this repo was 
created with "--reference".  It _might_ be reasonable to expect 'git gc' 
to be run:

> [jgarzik@pretzel libata-dev]$ git pull ../linux-2.6/
> Updating bfa274e..7704a8b
> Fast forward
> Auto packing your repository for optimum performance. You may also
> run "git gc" manually. See "git help gc" for more information.
> Counting objects: 462, done.
> Compressing objects: 100% (333/333), done.
> Writing objects: 100% (462/462), done.
> Total 462 (delta 345), reused 176 (delta 129)
> warning: There are too many unreachable loose objects; run 'git prune' to remove them.


Step 2:
In the same repo, rebase a branch (contains a single changeset), 
immediately following step #1:

> [jgarzik@pretzel libata-dev]$ git branch
>   ALL
>   NEXT
> * master
>   mv-ahci-pata
>   new-eh
>   sii-lbt
> [jgarzik@pretzel libata-dev]$ git-checkout sii-lbt && git-rebase master
> Switched to branch "sii-lbt"
> First, rewinding head to replay your work on top of it...
> HEAD is now at 7704a8b... Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
> Applying [libata] sata_sil: Turn on Large Block Transfer (LBT) feature
> Auto packing your repository for optimum performance. You may also
> run "git gc" manually. See "git help gc" for more information.
> Counting objects: 4, done.
> Compressing objects: 100% (4/4), done.
> Writing objects: 100% (4/4), done.
> Total 4 (delta 0), reused 0 (delta 0)
> warning: There are too many unreachable loose objects; run 'git prune' to remove them.


Step 3:
Ditto, a second rebase in the same repo, immediately following step #2:

> [jgarzik@pretzel libata-dev]$ git-checkout new-eh && git-rebase master
> Switched to branch "new-eh"
> First, rewinding head to replay your work on top of it...
> HEAD is now at 7704a8b... Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
> Applying [libata #new-eh] sata_sx4: convert to new EH
> Auto packing your repository for optimum performance. You may also
> run "git gc" manually. See "git help gc" for more information.
> Counting objects: 4, done.
> Compressing objects: 100% (4/4), done.
> Writing objects: 100% (4/4), done.
> Total 4 (delta 0), reused 0 (delta 0)
> warning: There are too many unreachable loose objects; run 'git prune' to remove them.


Step 4:
Ditto, a third rebase in the same repo, immediately following step #3:

> [jgarzik@pretzel libata-dev]$ git-checkout mv-ahci-pata && git-rebase master
> Switched to branch "mv-ahci-pata"
> First, rewinding head to replay your work on top of it...
> HEAD is now at 7704a8b... Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
> Applying [libata #mv-ahci-pata] ahci: add rough draft Marvell PATA support
> Auto packing your repository for optimum performance. You may also
> run "git gc" manually. See "git help gc" for more information.
> Counting objects: 5, done.
> Compressing objects: 100% (5/5), done.
> Writing objects: 100% (5/5), done.
> Total 5 (delta 0), reused 0 (delta 0)
> warning: There are too many unreachable loose objects; run 'git prune' to remove them.


Will the 'git gc' never end???

	Jeff

Re: 'git gc' always run, on old kernel repo?

[Asheesh Laroia]

On Thu, 28 Feb 2008, Jeff Garzik wrote:

> Will the 'git gc' never end???

sudo ln -sf /usr/bin/git-gc /bin/echo

(-;

-- Asheesh.

-- 
Maternity pay?	Now every Tom, Dick and Harry will get pregnant.
 		-- Malcolm Smith

Re: 'git gc' always run, on old kernel repo?

[Asheesh Laroia]

On Thu, 28 Feb 2008, Asheesh Laroia wrote:

> On Thu, 28 Feb 2008, Jeff Garzik wrote:
>
>> Will the 'git gc' never end???
>
> sudo ln -sf /usr/bin/git-gc /bin/echo

Er, the other way around.  Must have had too much crack this morning.

*blushes*

-- Asheesh.

-- 
Your boss is a few sandwiches short of a picnic.

Re: 'git gc' always run, on old kernel repo?

[Nicolas Pitre]

On Thu, 28 Feb 2008, Jeff Garzik wrote:

> > warning: There are too many unreachable loose objects; run 'git prune' to
> > remove them.
> 
> Will the 'git gc' never end???

What happens if you try to run "git prune"?


Nicolas

Re: 'git gc' always run, on old kernel repo?

[Jeff Garzik]

Nicolas Pitre wrote:
> On Thu, 28 Feb 2008, Jeff Garzik wrote:
> 
>>> warning: There are too many unreachable loose objects; run 'git prune' to
>>> remove them.
>> Will the 'git gc' never end???
> 
> What happens if you try to run "git prune"?

Same behavior.

FWIW I run "git prune" immediately prior to "git push", _every_ time I 
push to master.kernel.org (git.kernel.org).

	Jeff