Mercurial > p > roundup > code
annotate roundup/anypy/xmlrpc_.py @ 6565:2c2dbfc332ba
Try to handle multiple connections better.
The session database is a hot spot. When multiple requests (e.g. 20)
come in at the same time session database contention can get great.
The original code didn't retry session database access when the open
failed. This resulted in errors at the client.
The second pass delayed 0.01 seconds and retried. It was better but we
still had multiple second stalls. I think the first request got in,
everybody else backed up and then retried at the same time. Again they
stepped on each other. With logging I would see many counters go all
the way to low single digits or to -1 indicating falure.
This pass uses randomint to generate delays from 0-.125 seconds in 5ms
increments. This performs better in testing. I rarely saw a counter
less than 13 (2 failed retries). Current logging starts after 6
failures and counts down until success or failure.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Thu, 16 Dec 2021 20:02:00 -0500 |
| parents | 99d4fb22aa65 |
| children | 7b33365ccb2a |
| rev | line source |
|---|---|
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5408
e46ce04d5bbc
Python 3 preparation: update xmlrpclib / SimpleXMLRPCServer imports.
Joseph Myers <jsm@polyomino.org.uk>
parents:
diff
changeset
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1 try: |
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e46ce04d5bbc
Python 3 preparation: update xmlrpclib / SimpleXMLRPCServer imports.
Joseph Myers <jsm@polyomino.org.uk>
parents:
diff
changeset
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2 # Python 3+. |
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e46ce04d5bbc
Python 3 preparation: update xmlrpclib / SimpleXMLRPCServer imports.
Joseph Myers <jsm@polyomino.org.uk>
parents:
diff
changeset
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3 from xmlrpc import client, server |
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5552
db10c0a1f338
Fix xmlrpc module selection for incomplete backport (issue2551010).
Gabi <gabriele.roeger@unibas.ch>
parents:
5408
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4 server.SimpleXMLRPCDispatcher |
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db10c0a1f338
Fix xmlrpc module selection for incomplete backport (issue2551010).
Gabi <gabriele.roeger@unibas.ch>
parents:
5408
diff
changeset
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5 except (ImportError, AttributeError): |
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5408
e46ce04d5bbc
Python 3 preparation: update xmlrpclib / SimpleXMLRPCServer imports.
Joseph Myers <jsm@polyomino.org.uk>
parents:
diff
changeset
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6 # Python 2. |
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6049
99d4fb22aa65
flake8 fixes: ignore import unused in python3.
John Rouillard <rouilj@ieee.org>
parents:
5552
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7 import xmlrpclib as client # noqa: F401 |
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5408
e46ce04d5bbc
Python 3 preparation: update xmlrpclib / SimpleXMLRPCServer imports.
Joseph Myers <jsm@polyomino.org.uk>
parents:
diff
changeset
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8 import SimpleXMLRPCServer as server |
