![]() How to analyze the Assets performance issue Inadequate server sizing for the user load.What causes issues with Assets performance Assets operations such as move, delete, edit, and metadata update taking too long.Thumbnails are taking too long to be generated.Slow file uploads to /assets.html or /damadmin UI.Refer to this article for detailed steps on ways to optimize performance.These tools will give you recommendations on client-side performance improvements. Use client-side site analysis tools such as the Audits feature in Google Chrome browser Developer Tools panel.Review caching strategies implemented at the AEM dispatcher level.Data Store Garbage Collection (Systems with FileDataStore or S3 DataStore only) - weekly.Offline Tar Compaction (TarMK only) - bi-weekly.Revision Clean Up (MongoMK and Database DocumentNodeStore’s only) - daily or more frequent.See this article for details on AEM maintenance and ensure that you are doing proper maintenance on AEM including: Review your system maintenance procedures.Analyze the request.log file for any slow requests.Linux: use the top command to check CPU utilization.Check at the OS level if the AEM java process is causing high CPU utilization: If AEM is causing high CPU utilization then run the out-of-the-box profiling tool for a few minutes and analyze the result.Capture a series of thread dumps and analyze them.Insufficient server sizing or incorrect architecture.CSS loaded throughout page instead of in the HTML head.Too many scripts loaded on page and loaded at top of page.Expensive requests such as expensive searches or inefficient application code, components, etc.Thread contention - long running requests such as slow searches, write-heavy background jobs, moving of whole branches of site content, etc. ![]() The request.log on AEM shows slow response times.AEM is not responding for some requests.This article describes the most common critical AEM issues and how to analyze them. Learn about the most common critical AEM issues and how to analyze them.
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