Issue 4663: Increase TextIOWrapper._CHUNK_SIZE - Python tracker
Issue4663
Created on 2008-12-14 18:18 by pitrou, last changed 2022-04-11 14:56 by admin. This issue is now closed.
| Messages (2) | |||
|---|---|---|---|
| msg77814 - (view) | Author: Antoine Pitrou (pitrou) *  |
Date: 2008-12-14 18:18 | |
Simply bumping TextIOWrapper._CHUNK_SIZE from 128 to 1024 yields some
significant performance improvements.
./python -m timeit -s "f=open('LICENSE')" "f.seek(0)" "for line in f: pass"
-> with 128: 6.21 msec per loop
-> with 1024: 3.41 msec per loop
./python -m timeit -s "f=open('LICENSE')" "f.seek(0)" "while
f.read(100): pass"
-> with 128: 4.03 msec per loop
-> with 1024: 1.25 msec per loop
Is there any counter-indication to doing so?
|
|||
| msg77890 - (view) | Author: Antoine Pitrou (pitrou) * |
Date: 2008-12-15 23:04 | |
Committed in r67803, r67804. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:56:42 | admin | set | github: 48913 |
| 2008-12-15 23:04:19 | pitrou | set | status: open -> closed resolution: fixed messages: + msg77890 |
| 2008-12-14 18:18:30 | pitrou | create | |