On Sun, Oct 28, 2012 at 11:22 PM, Christopher Armstrong < ra...@twistedmatrix.com> wrote:
> On Sun, Oct 28, 2012 at 1:28 PM, <exar...@twistedmatrix.com> wrote: > >> On 05:57 am, dynami...@gmail.com wrote: >> >Hi All >> > >> > I am quite concerned the ticket 2424 due to our system use >> >reactor.callLater almost anywhere. I know this issue is hard to be >> >finxed >> >otherwise It wouldn't exist for such a long time. So any work around >> >before >> >we getting fix it? The only way I can do is to disable NTP or stop >> >process, >> >sync the time manually and then restart the process. The latter way is >> >hard >> >to be accepted due to we have many machines. >> >> NTP does not cause problems with scheduling. NTP gradually slews the >> system clock - it does not introduce discontinuities (either forward or >> backward), it changes the rate at which time passes until the system >> clock agrees with the external clock. >> >> If you have systems configured to have their system clocks jump >> (`ntpdate` is sometimes used for this), fix them to not be configured >> this way. >> >> #2424 is primarily about user-initiated events, primarily on desktop >> machines - a user changing the system time, a user suspending the >> machine (and later unsuspending it). There's little or no reason for >> problems related to #2424 to ever come up on a properly maintained >> server. >> >> > I think that for *certain* uncommon types of applications, even the very > minor skewing of ntp can cause problems, but I wonder if gelin yan has > encountered real problems caused by the ntp skewing in the application > under discussion. Gelin, you did not describe what problem you're actually > having. If you would, that would benefit the continuation of the discussion. > > -- > Christopher Armstrong > http://radix.twistedmatrix.com/ > http://planet-if.com/ > > > > _______________________________________________ > Twisted-Python mailing list > Twisted-Python@twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > > Hi Christopher I didn't encounter any problem with twisted so far but it happened a few years ago when I deployed the system (based on C#/C++) on windows. Sometimes, the timer stopped running. Bugs triggered by this issue are not really easy to be detected. That is why I am concerned.
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