feat(watcher): partial git refresh #1373
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
First PR of many. These can be incrementally merged.
Optimising watchers has two parts:
Preventing concurrency for both is a problem as they cover a different set of files.
Avoid this problem for directory watchers by only git refreshing the sub-tree and making the sets of files the same.
Experimentation has shown that this is a substantial time save: ~1/20th for my large test repo