stream-clone: stop getting the file size of all file in v3
The point of v3 is to do less work in the locked section. It was currently not
the case.
This significantly boost performance. The following number comes from a large
private repository using perf::stream-locked-section:
base-line: 35.03 seconds
this-change: 24.50 seconds (-30%)
--- a/mercurial/streamclone.py Tue Mar 26 18:55:40 2024 +0000
+++ b/mercurial/streamclone.py Tue Mar 26 11:24:20 2024 +0000
@@ -723,8 +723,8 @@
# create a copy of volatile files
for k, vfs, e in entries:
for f in e.files():
- f.file_size(vfs) # record the expected size under lock
if f.is_volatile:
+ f.file_size(vfs) # record the expected size under lock
copy(vfs.join(f.unencoded_path))
# the first yield release the lock on the repository
yield None