Performance notes

Jump to bottom Edit New page

Adam Fraser edited this page Feb 17, 2015 · 2 revisions

lag-queue

change.TimeReceived until added to all channel caches
TimeReceived set immediately prior to calling processEntry

lag-queue is made up of:

processEntry
- get changeCache write lock
- is next sequence
  - _addToCache
  - _addPendingLogs()
- is pending
  - adds to pending
  - if past maxPending, does _addPendingLogs()
- was skipped
  - _addToCache
_addToCache
- for each channel
  - gets cache from map (already has write lock from above)
  - channel.addToCache
  - if late, channel.AddLateSequence
channel.addToCache
- gets channel cache write lock
- _appendChange
  - if latest, iterate over cache looking for duplicate DocID
  - if late, iterate over cache looking for position and duplicate DocID
- _pruneCache
  - loop - if cache exceeds max, remove first entry