[
https://issues.apache.org/jira/browse/OAK-851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jukka Zitting resolved OAK-851.
-------------------------------
Resolution: Fixed
Fix Version/s: 0.9
Looks like we can mark this as resolved as the main bottleneck is gone.
> Slowness while traversing a tree
> --------------------------------
>
> Key: OAK-851
> URL: https://issues.apache.org/jira/browse/OAK-851
> Project: Jackrabbit Oak
> Issue Type: Bug
> Reporter: Antonio Sanso
> Fix For: 0.9
>
> Attachments: GetNodesTest.java, less-reconnects.patch
>
>
> I have done some simple test on tree traversal and it seems that is really
> slow (specially compared with the Jackrabbit case).
> My scenario is a bit artificial but not so far away from reality.
> I have a tree with a depth of 100 and I have tried to traverse it from root
> to leaf.
> This is the performance of oak
> # GetNodesTest min 10% 50% 90% max N
> Oak-Memory 980 999 1073 1160 1189 14
> while Jackrabbit gives me
> # GetNodesTest min 10% 50% 90% max N
> Jackrabbit 0 1 1 2 40 10187
> As you see the performance difference is quite substantial.
> I have tried to nail down the source of sloweness but I could not find it. It
> seems more that the culprit is the huge amount of call to TreeImpl#reconnect.
> Just for completeness I have done a test on accessing directly the leaf
> rather than traverse and the performance are quite good (still not great
> though)....
> # GetNodesTest min 10% 50% 90% max N
> Oak-Memory 15 16 17 22 53 817
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
