[jboss-jira] [JBoss JIRA] (WFLY-5822) Clustering performance regression in ejbremote-dist-sync scenario

[Richard Achmatowicz (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-5822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144255#comment-13144255 ] 

Richard Achmatowicz commented on WFLY-5822:
-------------------------------------------

Set up some basic byteman scripts to dump out the following information on the server side:

Infinispan processing a get request in DistributionInterceptor:
{noformat}
[BYTEMAN-Get(perf18)] command = GetKeyValueCommand {key=eac549bf-6076-4d09-a6c4-1f9f545e8c6a, flags=null}, isOriginLocal = true, isInTxnScope = true, origin = null, cacheTopologyId = 6, primaryOwner = perf18, isKeyLocal = false
{noformat}

Infinispan processing a put request in DistributionInterceptor:
{noformat}
[BYTEMAN-Put(perf18)] command = PutKeyValueCommand{key=UnknownSessionID [6868556952675068536750685266705766505570704954555069526651494854], value=org.wildfly.clustering.ejb.infinispan.bean.InfinispanBeanEntry at 1bb137da, flags=[FORCE_SYNCHRONOUS], putIfAbsent=true, valueMatcher=MATCH_EXPECTED, metadata=EmbeddedMetadata{version=null}, successful=true}, isOriginLocal = true, isInTxnScope = true, origin = null, cacheTopologyId = 6, primaryOwner = perf18, isKeyLocal = false
{noformat}

Infinispan needing to do a remote get for a value during DistributionInterceptor processing:
{noformat}
[BYTEMAN-RetrieveFromRemote(perf18)] key = perf18
{noformat}

This is a first approximation to seeing what is going on here.

The jobs are here:

EAP 6.4.0.GA
https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/rachmatowicz___byteman___eap-6x-stress-ejbremote-dist-sync

EAP 7.0.0.DR4
https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/rachmatowicz___byteman___eap-7x-stress-ejbremote-dist-sync



> Clustering performance regression in ejbremote-dist-sync scenario 
> ------------------------------------------------------------------
>
>                 Key: WFLY-5822
>                 URL: https://issues.jboss.org/browse/WFLY-5822
>             Project: WildFly
>          Issue Type: Bug
>          Components: Clustering, EJB
>    Affects Versions: 10.0.0.CR5
>            Reporter: Michal Vinkler
>            Assignee: Richard Achmatowicz
>            Priority: Critical
>
> Compared to EAP 6, all SYNC scenarios have the same/better performance except of this one, wonder why?
> Compare these results:
> stress-ejbremote-dist-sync
> 7.0.0.ER2: [throughput|http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-stress-ejbremote-dist-sync/4/artifact/report/graph-throughput.png]
> 6.4.0.GA: [throughput|http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-6x-stress-ejbremote-dist-sync_noperf21/1/artifact/report/graph-throughput.png]
> ---------------------------------------
> Just for comparison: ejbremote REPL_SYNC scenario *performs well* on the other hand:
> stress-ejbremote-repl-sync
> 7.0.0.ER2: [throughput|http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-stress-ejbremote-repl-sync/3/artifact/report/graph-throughput.png]
> 6.4.0.GA: [throughput|http://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-6x-stress-ejbremote-repl-sync_noperf21/2/artifact/report/graph-throughput.png]



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