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Performance tuning activities

One of the important steps after upgradation is applied all the possible performance tuning activities. We did following things as a part of it.
  1. Update JVM Parameters in start script
    1. Check CQ process: $ps –ef | grep cq
    2. Check crx-quickstart path : $pwdx <pid>
    3. Go to crx-quickstart path: $cd <aem-install-path>/crx-quickstart/bin
    4. Edit start file using Vi editor, Update CQ_JVM_OPTS as mentioned below;
    5. Reduce Xms heap size from 27648 MB to 12000 MB and Xmx from 27648 MB to 18000 MB
    6. Update CQ_JVM_OPTS statement from CQ 5.6.1 instance and add below properties:
    7. Doak.queryLimitInMemory=500000
    8. Doak.queryLimitReads=100000
    9. Dupdate.limit=250000
    10. Doak.fastQuerySize=true
    12. XX:+CMSScavengeBeforeRemark 
    13. -XX:+ScavengeBeforeFullGC 
    14. -XX:+ParallelRefProcEnabled 
    15. -XX:CMSInitiatingOccupancyFraction=70 
    16. -XX:+UseConcMarkSweepGC  
    17. -XX:+CMSParallelRemarkEnabled 
    18. -XX:ConcGCThreads=8 
    19. -XX:ParallelGCThreads=8 
    20. -Xloggc:/opt/adobe/author/crx-quickstart/logs/gc-auth.log 
    21. -XX:+UseGCLogFileRotation 
    22. -XX:NumberOfGCLogFiles=10 
    23. -XX:GCLogFileSize=10M 
    24. -XX:+HeapDumpOnOutOfMemoryError 
    25. -XX:HeapDumpPath=/opt/adobe/author/crx-quickstart/logs/dump 
    26. -XX:ErrorFile=/opt/adobe/author/crx-quickstart/logs/jvm/hs_err_pid%p.log 
    27. -Djackrabbit.maxQueuedEvents=1000000 
    28. -Djava.io.tmpdir=/opt/adobe/author/tmp 
    29. -Djava.awt.headless=true 
    30. -Doak.queryLimitInMemory=500000 
    31. -Doak.queryLimitReads=100000 
    32. -Dupdate.limit=250000 
    33. -Doak.fastQuerySize=true 
    34. -Dorg.apache.jackrabbit.core.security.authorization.acl.CachingEntryCollector.maxsize=30000'
  2. Installing all Hotfixes, security patches & Service packs
  3. OSGI configuration changes like
    1. Increase Cache size for CQBufferedImageCache
    2. Disable Mobile Redirect Filter, if not needed
    3. Disable Mobile TransformerFactory, if not needed
    4.  Set Number of Requests to Record to Zero in Sling Main Servlet
    5. Disable unnecessary OSGI Components
    6. Disable unused components
  4. Index optimisations
    1. Go to /oak:index/nodetype ,
    2. Edit property *declareNodeType and remove slingevent:Job from array 
    3. Reindex nodetype using operation OOTB tool. 
  5. Workflows - Convert workflow type to “Transient” (if lots of workflows are going to be used)
  6. Remove Sling Queues Configured

  1. After doing both post upgrade activities and performance tuning activities, its important to do sanity on the AEM systems
    1. Check Login page and welcome page post login.
    2. Check CRXde, CRX Explorer is accessible
    3. Check if Replication agents are accessible. 
    4. Check DAM admin access and view image properties.
    5. Check tools console (miscadmin).
    6. Check workflow console and view workflow models.
    7. Check cloud services console
    8. Check Tags console.
    9. Check Felix console (bundles, configMgr, services, components, JMX console etc.)
    10. Check Package manager console. 

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