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Created on 2014-02-16 23:34 by vstinner, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (4) | |||
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| msg211374 - (view) | Author: STINNER Victor (vstinner) *  |
Date: 2014-02-16 23:34 | |
In Python 3.4, poll and epoll were modified to round the timeout away from zero to fix a performance issue in asyncio. I also modified select and kqueue for the same reason. changeset: 89230:180e4b678003 tag: tip user: Victor Stinner <victor.stinner@gmail.com> date: Mon Feb 17 00:02:43 2014 +0100 files: Include/pytime.h Lib/test/test_time.py Misc/NEWS Modules/_datetimemodule.c Modules/_testcapimod description: Issue #20320: select.select() and select.kqueue.control() now round the timeout aways from zero, instead of rounding towards zero. It should make test_asyncio more reliable, especially test_timeout_rounding() test. |
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| msg211446 - (view) | Author: Larry Hastings (larry) * |
Date: 2014-02-17 21:34 | |
This one worries me a little. Antoine, do you agree that this should be cherry-picked for 3.4.0? |
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| msg212024 - (view) | Author: Gregory P. Smith (gregory.p.smith) * |
Date: 2014-02-23 20:07 | |
I don't see why this cannot wait until 3.4.1. True, rounding away from zero is desirable in these cases but it seems like this should be a non issue most of the time and any distro (ubuntu) that picks up 3.4.0 can apply this fix to their own python package if they ever find this causing an actual problem. It was never explained in the original #20320 why anything considers it sane to call a selector with a non-zero microscopic timeout in the first place and expect well defined behavior. IMNSHO desiring any timeout less than a millisecond is asking for trouble from a variety of OS APIs. |
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| msg212700 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2014-03-04 10:22 | |
Let's wait 3.4.1 for this one. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:58 | admin | set | github: 64845 |
| 2014-03-04 10:22:37 | vstinner | set | status: open -> closed resolution: wont fix messages: + msg212700 |
| 2014-02-23 20:07:31 | gregory.p.smith | set | nosy:
+ gregory.p.smith messages: + msg212024 |
| 2014-02-17 21:34:22 | larry | set | nosy:
+ pitrou messages: + msg211446 |
| 2014-02-16 23:34:35 | vstinner | create | |