Let's make it 59.99 then. We want to avoid false positives more than false negatives.
On Mar 3, 7:08 pm, Rowdy <[email protected]> wrote: > mdipierro wrote: > > grrrr. as the changelog above said: > > > 1) major fix in cron (will I ever get this 100% right?) > > > Anyway, please check it in trunk. > > I did not get a chance to test cron changes in trunk before the 1.76.3 > release. > > Thank you for the speedy responses and update. > > I have had a look at the 1.76.3 cron, and have the following > observations. > > 1. The "execute every minute" problem is fixed :-) > > 2. The spelling error is still there "CRON Call retruned success" should > be "returned" > > 3. There is a problem with acquiring a lock. Not a web2py problem > particularly. As I understand it, Token.acquire() in cron.py checks > whether the last time cron started was more than 60 seconds ago. If > not, it does not try to acquire a lock, and the whole cron cycle > silently aborts (crondance(): if not cronmaster: return) until the next > minute. > > What I am seeing with a few extra debug statements is that while > acquiring a lock and testing "self.now - start >= 60" sometimes the > calculation is like 60.0000019073 and sometimes like 59.9999949932. > This seems to happen fairly randomly, so occasionally, but repeatably, > cron thinks the last execution was 59.999 seconds ago, and does not > start up. The next time thru the time difference is like 119.999917984 > seconds, so the next cron does start. > > How about changing the test for >= 60 seconds to >= 59 seconds in > Token.acquire()? I tried that and, although it is difficult to state > authoritatively that it works forever, running my 5 minute and 10 minute > cron jobs for an hour or so has reliably run each job at the scheduled > times. > > Rowdy -- You received this message because you are subscribed to the Google Groups "web2py-users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/web2py?hl=en.
