[infinispan-issues] [JBoss JIRA] (ISPN-6027) Use bundler sender-sends-with-timer by default

[Dan Berindei (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-6027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13143943#comment-13143943 ] 

Dan Berindei commented on ISPN-6027:
------------------------------------

We handle commands in Infinispan's thread pool, without blocking the OOB thread. However, we do the unmarshalling on the delivery thread, and unmarshalling also takes some time, so batching may hurt us there. On the other hand, messages marked {{OOB | DONT_BUNDLE}} are always delivered on separate threads, and the {{DONT_BUNDLE}} flag doesn't seem to affect our performance with {{TransferQueueBundler}}.

Another potential problem with {{TransferQueueBundler}} is that you have a single bundler thread sending messages to all destinations, unicasts and broadcasts, as if you had a single lock on the transport. Without a bundler, you have a lock per connection, so you can send messages to multiple targets in parallel.

> Use bundler sender-sends-with-timer by default
> ----------------------------------------------
>
>                 Key: ISPN-6027
>                 URL: https://issues.jboss.org/browse/ISPN-6027
>             Project: Infinispan
>          Issue Type: Task
>          Components: Configuration, Core
>    Affects Versions: 8.1.0.Final
>            Reporter: Dan Berindei
>            Assignee: Dan Berindei
>             Fix For: 8.2.0.Alpha1
>
>
> Performance tests show {{sender-sends-with-timer}} is still a bit faster than {{transfer-queue}}, so we should make it the default.



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