[wp-trac] Re: [WordPress Trac] #7068: cron improvement

[WordPress Trac]

#7068: cron improvement
-------------------------+--------------------------------------------------
 Reporter:  hailin       |        Owner:  hailin  
     Type:  enhancement  |       Status:  reopened
 Priority:  high         |    Milestone:  2.7     
Component:  General      |      Version:          
 Severity:  normal       |   Resolution:          
 Keywords:               |  
-------------------------+--------------------------------------------------
Comment (by Otto42):

 I believe this race condition is unavoidable as long as it is driven off
 of hits to the site itself, as those hits are unpredictable. Two in quick
 succession can always cause wp-cron to hit twice so the most you can do is
 reduce it.

 PHP does not really have a good interprocess mutex mechanism. There's one
 over here that uses semaphores or file locking, but I have no information
 on how reliable such a thing would be:
 http://in2.php.net/manual/en/ref.sem.php

-- 
Ticket URL: <http://trac.wordpress.org/ticket/7068#comment:8>
WordPress Trac <http://trac.wordpress.org/>
WordPress blogging software