Commits on Aug 1, 2016

1. scheduler: Debounce commit events …

   When loading a state that contained large numbers of nodes and tasks,
   but no ready nodes that could accept the tasks, swarmd used large
   amounts of CPU repeatedly trying to schedule the full set of tasks. The
   allocator caused many commits on startup (see moby#1286), and this produced
   a large backlog of commit events, each one of which caused a full
   scheduling pass.
   
   To avoid this pathological behavior, debounce the commit events
   similarly to how the dispatcher's Tasks loop debounces events. When a
   commit event is received, that starts a 50 ms countdown to wait for
   another commit event before running the scheduling pass. If commit
   events keep being received and resetting this timer, the scheduler will
   run the scheduling pass anyway after a second.
   
   Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>

   

   aaronlehmann committed Aug 1, 2016
   Configuration menu

   • View commit details
   • Copy full SHA for 77c62db
   • Browse repository at this point

   Copy the full SHA

   77c62db View commit details

   Browse the repository at this point in the history