[jboss-jira] [JBoss JIRA] (JGRP-1722) Improve performance of ENCRYPT protocol

[Bela Ban (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12948873#comment-12948873 ] 

Bela Ban commented on JGRP-1722:
--------------------------------

As every message that needs to be encrypted (when sent or received) has to acquire the *single* lock in {{ENCRYPT}}, even unrelated messages (e.g. from different senders or tagged as {{OOB|DONT_BUNDLE}}) are delivered or sent sequentially.
SOLUTION: use a pool of ciphers. Each cipher has a related lock. A sender or receiver thread grabs a random cipher and locks its associated lock. This way, lock requests are striped and the single lock bottleneck is removed. The pool size (and thus the lock striping) needs to be configurable.
                
> Improve performance of ENCRYPT protocol
> ---------------------------------------
>
>                 Key: JGRP-1722
>                 URL: https://issues.jboss.org/browse/JGRP-1722
>             Project: JGroups
>          Issue Type: Enhancement
>    Affects Versions: 3.4
>            Reporter: Martin Gencur
>            Assignee: Bela Ban
>             Fix For: 3.5
>
>
> A stress tests with the following setup showed that performance (reads and writes/sec) is halved when ENCRYPT protocol is enabled:
> Infinispan had distributed sync cache with 2 owners on 4 nodes, no transactions. The stress test used 10 threads on each node accessing 1024 byte entries, no conflicts on keys, 20 % writes, 80 % reads. 
> It would be great if we could improve the performance of ENCRYPT protocol.

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