Improve performance of publishing files with iso_distributor via the way of fast-forward
Improve performance of publishing with iso_distributor via the way of fast-forward
This function, which is used to publishing a repo with iso_distributor, takes around 35 minutes (there are ~88k units in the repository)
The old implementation would generate symlinks for all units in the repository then copy to target published directories. If there are huge mount of units in the repository, the publish would be pretty slow due to those file operations.
Actually, just a few files are added/changed before every publish. So if just generate symlinks for those incremental or changed files, the publish will get faster.
On our installation, for a repo with 71K, this reduced the runtime of this publish from ~23 minutes to ~30 seconds.
Improve performance of publish with iso_distributor via fast-forward
Only symlinks for those incremental or changed files are generated
and copied to target directories, then the publish gets faster.
update unit test because os.makedirs is now called conditionally
add missing parameters
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