CMS 10.6.308–10.6.342: DSS Performance Issues Caused By Excessive Rebuilds of Core System Metadata
In CMS 10.6.308–10.6.342, DSS increased response times led to site instability and unsreponsiveness. These issues were caused by excessive resource consumption and contention from the DSS repeatedly rebuilding single object core system metadata after each publish and replication event.
Statement of Issue
On the DSS, core system metadata is stored in single objects used by all website requests to the website. These objects function as in-memory databases and require updates after each publish and replication event.
Instead of the DSS handling the update process as a background task, a software issue in version 10.6 caused the DSS to repeatedly rebuild the core system metadata stored in single objects. These rebuild cycles occurred multiple times after each publish and replication event, resulting in excessive resource consumption and contention. The issue was also compounded during publish and replicaiton events when the DSS experienced high traffic load.
Symptoms
When the DSS site is under consistent load (at about ten requests per second or more) and a publish/replication is running during this load period, the DSS site may become unresponsive for other incoming page requests.
In some scenarios, the DSS requires an application pool recycle to become responsive again.
Resolution
Additional Information
If you encounter further issues, contact Ingeniux Support.
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