Stefan Egli created OAK-2613:
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Summary: Do versionGC more frequently and at adjusted speed
Key: OAK-2613
URL: https://issues.apache.org/jira/browse/OAK-2613
Project: Jackrabbit Oak
Issue Type: Improvement
Components: core, mongomk
Affects Versions: 1.0.12
Reporter: Stefan Egli
Fix For: 1.2
This is a follow-up ticket from
[here|https://issues.apache.org/jira/browse/OAK-2557?focusedCommentId=14355322&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14355322]
mixed with an offline discussion with [~mreutegg]:
* we could make the VersionGC play nicely to existing load on the system: it
could progress slower if the load is higher and vice-verca. One simple measure
could be: if the observation queue is small (eg below 10) then the load is low
and it could progress full-speed. Otherwise it could add some artificial
sleeping in between.
* we could run versionGC more regularly than once a day but instead kind of
'continuously' let it run in the background. While the speed of the gc would be
adjusted to the load - it also would have to be assured that it doesn't run too
slow (and would never finish if instance is under some constant load)
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