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author | msoxzw <56633971+msoxzw@users.noreply.github.com> | 2022-04-15 19:59:01 (GMT) |
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committer | GitHub <noreply@github.com> | 2022-04-15 19:59:01 (GMT) |
commit | 42fabc3ea767f10989363536eaaa9da32616ab57 (patch) | |
tree | 6233bfa04fbe4ad6f367d2f4e05d0acb7553c006 /Lib/asyncio/selector_events.py | |
parent | c9e231de8551ab6d06c92dfa95033150e52d7f1f (diff) | |
download | cpython-42fabc3ea767f10989363536eaaa9da32616ab57.zip cpython-42fabc3ea767f10989363536eaaa9da32616ab57.tar.gz cpython-42fabc3ea767f10989363536eaaa9da32616ab57.tar.bz2 |
gh-91487: Optimize asyncio UDP speed (GH-91488)
Fix #91487
When transferring a small file, e.g. 256 KiB, the speed of this PR is comparable. However, if a large file, e.g. 65536 KiB, is transferred, asyncio UDP will be over 100 times faster than the original. The speed is presumably significantly faster if a larger file is transferred, e.g. 1048576 KiB.
Automerge-Triggered-By: GH:gpshead
Diffstat (limited to 'Lib/asyncio/selector_events.py')
-rw-r--r-- | Lib/asyncio/selector_events.py | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py index e99a503..c9bbe2a 100644 --- a/Lib/asyncio/selector_events.py +++ b/Lib/asyncio/selector_events.py @@ -1131,6 +1131,7 @@ class _SelectorDatagramTransport(_SelectorTransport): waiter=None, extra=None): super().__init__(loop, sock, protocol, extra) self._address = address + self._buffer_size = 0 self._loop.call_soon(self._protocol.connection_made, self) # only start reading when connection_made() has been called self._loop.call_soon(self._add_reader, @@ -1141,7 +1142,7 @@ class _SelectorDatagramTransport(_SelectorTransport): waiter, None) def get_write_buffer_size(self): - return sum(len(data) for data, _ in self._buffer) + return self._buffer_size def _read_ready(self): if self._conn_lost: @@ -1200,11 +1201,13 @@ class _SelectorDatagramTransport(_SelectorTransport): # Ensure that what we buffer is immutable. self._buffer.append((bytes(data), addr)) + self._buffer_size += len(data) self._maybe_pause_protocol() def _sendto_ready(self): while self._buffer: data, addr = self._buffer.popleft() + self._buffer_size -= len(data) try: if self._extra['peername']: self._sock.send(data) @@ -1212,6 +1215,7 @@ class _SelectorDatagramTransport(_SelectorTransport): self._sock.sendto(data, addr) except (BlockingIOError, InterruptedError): self._buffer.appendleft((data, addr)) # Try again later. + self._buffer_size += len(data) break except OSError as exc: self._protocol.error_received(exc) |