Message142856
> Using CLOCK_MONOTONIC is better than CLOCK_REALTIME (default) for GIL
> because settimeofday() may break the pthread_cond_timedwait().
Indeed.
A couple remarks:
- regular locks and conditions variables exposed by the threading module suffer from the same problem
- POSIX semaphores are also affected, but you can't select an alternative clock source
- actually, CLOCK_MONOTONIC is affected by NTP adjustements: while it's guaranteed not to go backward, its rate can be affected
Did you really encounter this problem, or is this just a theoretical concern? |
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Date |
User |
Action |
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2011-08-23 18:54:29 | neologix | set | recipients:
+ neologix, vstinner, methane |
2011-08-23 18:54:29 | neologix | set | messageid: <1314125669.3.0.498159085449.issue12822@psf.upfronthosting.co.za> |
2011-08-23 18:54:28 | neologix | link | issue12822 messages |
2011-08-23 18:54:28 | neologix | create | |
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