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path: root/doc/todo/avoid_unnecessary_union_merges.mdwn
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* remove old closed bugs and todo items to speed up wiki updates and reduce sizeGravatar Joey Hess2014-05-29
| | | | | | | | Remove closed bugs and todos that were least edited before 2014. Command line used: for f in $(grep -l '\[\[done\]\]' *.mdwn); do if [ -z $(git log --since=2014 --pretty=oneline "$f") ]; then git rm $f; git rm -rf $(echo "$f" | sed 's/.mdwn$//'); fi; done
* avoid unnecessary auto-merge when only changing a file in the branch.Gravatar Joey Hess2011-11-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Avoids doing auto-merging in commands that don't need fully current information from the git-annex branch. In particular, git annex add no longer needs to auto-merge. Affected commands: Anything that doesn't look up data from the branch, but does write a change to it. It might seem counterintuitive that we can change a value without first making sure we have the current value. This optimisation works because these two sequences are equivilant: 1. pull from remote 2. union merge 3. read file from branch 4. modify file and write to branch vs. 1. read file from branch 2. modify file and write to branch 3. pull from remote 4. union merge After either sequence, the git-annex branch contains the same logical content for the modified file. (Possibly with lines in a different order or additional old lines of course).
* addGravatar Joey Hess2011-11-12
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