[OSM-talk] Some tiles not rendering?

[Nakor]

>
>> Also from the graph it looks like the queue when almost empty during 
>> the past 24 hours so why would the tile not be rendered in that case?
>
> Really?  The queue has been full 18 hours a day or more for the past 
> two weeks.
>
> Bob

Sorry I was not clear "The queue went almost empty (for some time) 
during the past 24 hours" would have been more correct.

That still leaves 6 hours where the queue is close to empty as seen on 
the graph for today between 0:00 and 6:00 approximately. If there are 
tiles waiting to be rendered why do not they get processed during that time?