[jbosstools-issues] [JBoss JIRA] (JBIDE-19820) Batch feature makes wildfly import way slower

[Viacheslav Kabanovich (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-19820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13069404#comment-13069404 ] 

Viacheslav Kabanovich commented on JBIDE-19820:
-----------------------------------------------

To check if a library or a project has Batch artifacts, there is only one way - to scan classes.

The list of wildfly projects that have Batch API in classpath, with number of scanned classes and used time:

wildfly-testsuite-shared - 56240 classees in 24068 ms,
wildfly-testsuite-compat - 9990 classes in 5784 ms,
wildfly-jberet - 7578 classes in 3229 ms,
wildfly-ts-integ-xts - 4967 classes in 2309 ms,
wildfly-batch - 4885 classes in 773 ms,
wildfly-spec-api-test - 3096 classes in 109 ms,
wildfly-ts-integ-basic 2321 classes in 331 ms,
wildfly-ts-integ-picketlink - 868 classes in 63 ms,
wildfly-ts-integ-clustering - 249 classes in 63 ms,
wildfly-ts-integ-web - 206 classes in 40 ms,
wildfly-ts-integ-smoke - 231 classes in 25 ms,
wildfly-ts-integ-rts - 125 classes in 9 ms,
wildfly-ts-integ-rbac - 118 classes in 6 ms,
wildfly-ts-integ-multinode - 135 classes in 17 ms,
wildfly-ts-integ-manualmode - 160 classes in 14 ms,
wildfly-ts-integ-java8 - 117 classes in 7 ms,
wildfly-ts-integ-iiop 131 classes in 7 ms,
wildfly-testsuite-integration-mixed-domain - 129 classes in 13 ms,
wildfly-testsuite-integration-domain - 138 classes in 10 ms,

Totally about 92000 classes processed in 37 s.

These projects hava totally about 450 jars in their classpath, and search for Batch artifacts in them takes 56 s.

Totally for 92000 classes and 450 jars - 93 s.

> Batch feature makes wildfly import way slower
> ---------------------------------------------
>
>                 Key: JBIDE-19820
>                 URL: https://issues.jboss.org/browse/JBIDE-19820
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: batch
>    Affects Versions: 4.3.0.Alpha2
>            Reporter: Rastislav Wagner
>            Assignee: Viacheslav Kabanovich
>            Priority: Critical
>             Fix For: 4.3.0.Beta1
>
>
> I made a comparison between Eclipse M6 and Eclipse M6 with batch feature installed while importing wildfly. WF is imported as maven project, maven is set to offline mode and local repository contains all needed dependencies.
> I did a 4 runs with following results:
> M6 was able to import WF 628,575,577,612 (in seconds) = average 598s
> M6 with batch feature: 843,832,924,877 (in seconds) = average 869s



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