Re: [script] find largest pack objects

On Fri, 10 Jul 2009, Antony Stubbs wrote:

Blog post about git pruning history and finding large objects in your repo:
http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/

This is a script I put together after migrating the Spring Modules project
from CVS, using git-cvsimport (which I also had to patch, to get to work on OS
X / MacPorts). I wrote it because I wanted to get rid of all the large jar
files, and documentation etc, that had been put into source control. However,
if _large files_ are deleted in the latest revision, then they can be hard to
track down.

#!/bin/bash
#set -x

# Shows you the largest objects in your repo's pack file.
# Written for osx.
#
# @see
http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
# @author Antony Stubbs

# set the internal field spereator to line break, so that we can iterate
easily over the verify-pack output
IFS=$'\n';

# list all objects including their size, sort by size, take top 10
objects=`git verify-pack -v .git/objects/pack/pack-*.idx | grep -v chain |
sort -k3nr | head`

echo "All sizes are in kB's. The pack column is the size of the object,
compressed, inside the pack file."

output="size,pack,SHA,location"
for y in $objects
do
	# extract the size in bytes
	size=$((`echo $y | cut -f 5 -d ' '`/1024))
	# extract the compressed size in bytes
	compressedSize=$((`echo $y | cut -f 6 -d ' '`/1024))
	# extract the SHA
	sha=`echo $y | cut -f 1 -d ' '`
	# find the objects location in the repository tree
	other=`git rev-list --all --objects | grep $sha`
	#lineBreak=`echo -e "\n"`
	output="${output}\n${size},${compressedSize},${other}"
done

echo -e $output | column -t -s ', '

This is certainly useful.  Mind submitting a patch adding this script to 
contrib/stats/ ?


Nicolas