[kronolith] Reminders: listAlarms () why not a filter on event_start ?

[Patrick ABIVEN]

Hello
Using Horde_Alarms for Kronolith reminders on a large database, we are facing poor performances due to the large number of events retrieved at each iteration. And many of these events doesn't occurs before weeks.
 In kronolith/lib/Driver/sql.php, the listAlarms() function calls $this->listEvents($date, null, true); Instead of passing null for the second argument (use for filtering on event_start), it seems that passing $date + X days will greatly reduce the number of events. X can be defined as a configuration argument.
Thank for your advises.
Patrick