Issue : Repository
growth
Recommendation
Starting from CQ 5.6.1, the referencedBy
property has been introduced in order to keep track of the pages that reference
the same link.
However, in
case a link such as external links in the page footers is referenced from too
many pages, Linkchecker performs a lot of JCR writes/update causing CPU peaks
as well as performance decreases, mainly caused by the JCR locks.
To verify if
the repository growth is related to the linkchecker, enable TRACE log level for
org.apache.jackrabbit.oak.jcr.operations.writes during a few minutes, and check
if the majority of the writes are below /var/linkchecker. Then do not forgot to
disable the TRACE log level.
In such
cases where performance is compromised by this linkchecker behavior, it is
recommended to disable this feature by following the steps below:
Solution
1. Delete
/var/linkchecker (it will be recreated automatically)
2. In the
OSGI configuration console, open Day CQ Link Checker Info Storage Service and
deselect "Save external link references” option and save.
Please note
that, disabling this option will not cause automatic removal of the existing
referencedBy property values. To achieve this, first remove /var/linkchecker.
