gh-117205: Increase chunksize when compiling pyc in parallel (#117206)

hauntsaninja · web-flow · commit b4fe02f595fc · 2024-04-03T15:24:24.000-07:00
diff --git a/Lib/compileall.py b/Lib/compileall.py
@@ -116,7 +116,8 @@ def compile_dir(dir, maxlevels=None, ddir=None, force=False,
                                            prependdir=prependdir,
                                            limit_sl_dest=limit_sl_dest,
                                            hardlink_dupes=hardlink_dupes),
-                                   files)
+                                   files,
+                                   chunksize=4)
             success = min(results, default=True)
     else:
         for file in files:
diff --git a/Misc/NEWS.d/next/Library/2024-03-25-00-20-16.gh-issue-117205.yV7xGb.rst b/Misc/NEWS.d/next/Library/2024-03-25-00-20-16.gh-issue-117205.yV7xGb.rst
@@ -0,0 +1 @@
+Speed up :func:`compileall.compile_dir` by 20% when using multiprocessing by increasing ``chunksize``.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Speed up :func:`compileall.compile_dir` by 20% when using multiprocessing by increasing ``chunksize``.