https://github.com/python/cpython/commit/a7584245661102a5768c643fbd7db8395fd3c90e
commit: a7584245661102a5768c643fbd7db8395fd3c90e
branch: main
author: Xi Ruoyao <[email protected]>
committer: gvanrossum <[email protected]>
date: 2024-06-07T08:51:32-07:00
summary:
gh-120226: Fix test_sendfile_close_peer_in_the_middle_of_receiving on Linux >=
6.10 (#120227)
The worst case is that the kernel buffers 17 pages with a page size of 64k.
files:
M Lib/test/test_asyncio/test_sendfile.py
diff --git a/Lib/test/test_asyncio/test_sendfile.py
b/Lib/test/test_asyncio/test_sendfile.py
index d33ff197bbfa1d..2509d4382cdebd 100644
--- a/Lib/test/test_asyncio/test_sendfile.py
+++ b/Lib/test/test_asyncio/test_sendfile.py
@@ -93,13 +93,10 @@ async def wait_closed(self):
class SendfileBase:
- # 256 KiB plus small unaligned to buffer chunk
- # Newer versions of Windows seems to have increased its internal
- # buffer and tries to send as much of the data as it can as it
- # has some form of buffering for this which is less than 256KiB
- # on newer server versions and Windows 11.
- # So DATA should be larger than 256 KiB to make this test reliable.
- DATA = b"x" * (1024 * 256 + 1)
+ # Linux >= 6.10 seems buffering up to 17 pages of data.
+ # So DATA should be large enough to make this test reliable even with a
+ # 64 KiB page configuration.
+ DATA = b"x" * (1024 * 17 * 64 + 1)
# Reduce socket buffer size to test on relative small data sets.
BUF_SIZE = 4 * 1024 # 4 KiB
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