#33502 Unsynchronized access to map in LogConfigManager
Under heavy load, an endless loop may occur within the org.apache.sling.commons.log.internal.slf4j.LogConfigManager class, and result in a 99% cpu usage, leading to an unresponsive instance. See also SLING-1326.
This issue is fixed by CQ5.2.1/CQ5.3 hotfix package #33502. Please raise a DayCare ticket to obtain this package.