[jboss-jira] [JBoss JIRA] Created: (JGRP-478) SFC changes

[Bela Ban (JIRA)]

SFC changes
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                 Key: JGRP-478
                 URL: http://jira.jboss.com/jira/browse/JGRP-478
             Project: JGroups
          Issue Type: Feature Request
    Affects Versions: 2.4.1 SP1
            Reporter: Bela Ban
         Assigned To: Bela Ban
             Fix For: 2.5


Various changes described in the subtasks:
   1.  Your FC2 is essentially SFC plus (a) credits replenishments only return the bytes read *not* the full credits (OK), (b) they are sent before available credits have been exhausted and (c) with unicast flow control.
   2. (a) makes a lot of sense, I'll add it to SFC. (BTW: FC used to do this, but then I changed it to make it simpler :-))
   3. (b) Not sure this makes sense; this can be achieved (e.g. in FC) by setting max_credits to a smaller value and increasing min_threshold. I agree that sending smaller number of credits in smaller interval is better, I measured this in my perf tests with SFC. OK, I'll likely implement (b) in SFC as well
   4. (c) The reason I didn't do unicast flow control was that SFC was simpler than FC, and I thought we don't need unicast flow control as there are not many unicast messages. Enter Buddy Replication with anycast, and that argument is flawed... :-)


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