Changes between Version 16 and Version 17 of BackendPrograms

Timestamp:

Jun 20, 2014, 5:13:56 PM (10 years ago)

Author:

davea

Comment:

--

BackendPrograms

@@ -40 +40 @@
  --purge_stale X::
         remove work items from the shared memory segment that have been there for longer than x minutes but haven't been assigned
- -appids N1, N2, ... ::
+ --appids N1, N2, ... ::
    Get work only for the given apps.
    Useful if your project uses both locality and job-cache scheduling.
@@ -60 +60 @@
  -d N:: debug level N (1 .. 4 = most verbose)
  --mod n i:: process only workunits with (id mod n) == i
+
+The transitioner works asynchronously from work generators and schedulers,
+and in high-load situations it can fall behind
+(i.e. a large queue of workunits waiting to be processed can build up).
+The transitioner backlog is shown in the server status page.
+If the backlog becomes large (> 1 hour) you can do the following:
+
+ * stop the project
+ * run '''sched/transitioner_catchup.php'''
+ * start the project