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Title: opcode prediction distorts dynamic execution profile stats
Type: Stage:
Components: Interpreter Core Versions:
process
Status: closed Resolution: fixed
Dependencies: Superseder:
Assigned To: rhettinger Nosy List: aimacintyre, rhettinger
Priority: normal Keywords:

Created on 2004年01月25日 06:34 by aimacintyre, last changed 2022年04月11日 14:56 by admin. This issue is now closed.

Messages (3)
msg19816 - (view) Author: Andrew I MacIntyre (aimacintyre) * (Python triager) Date: 2004年01月25日 06:34
By defining DYNAMIC_EXECUTION_PROFILE (and DXPAIRS if
you want opcode pair counts), opcode frequencies can be
evaluated for various program runs.
However successful opcode predictions bypass the
counter updates, which happen at the top of the loop.
So the result can be significantly under-represented
opcodes in the total statistics.
msg19817 - (view) Author: Andrew I MacIntyre (aimacintyre) * (Python triager) Date: 2004年01月25日 06:47
Logged In: YES 
user_id=250749
See patch #884022 for a possible fix/work around.
msg19818 - (view) Author: Raymond Hettinger (rhettinger) * (Python committer) Date: 2004年02月08日 20:06
Logged In: YES 
user_id=80475
Applied patch 884022.
History
Date User Action Args
2022年04月11日 14:56:02adminsetgithub: 39864
2004年01月25日 06:34:00aimacintyrecreate

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