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https://issues.apache.org/jira/browse/OAK-1465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910373#comment-13910373
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Stefan Egli edited comment on OAK-1465 at 2/24/14 3:01 PM:
-----------------------------------------------------------
Attached the CreateManyIndexedNodesTest which when run as follows:
{code}
-Xmx2048m -Dwarmup=10 -Druntime=20
--concurrency 1,1,1,1,1,1,1,1,1,1 CreateManyIndexedNodesTest Oak-Mongo
{code}
yields the following degradation on my box:
{code}
# CreateManyIndexedNodesTest C min 10% 50% 90% max
N
Oak-Mongo 1 1092 1131 1221 1379 1657
17
Oak-Mongo 1 1252 1269 1362 1471 1530
15
Oak-Mongo 1 1340 1362 1424 1507 1531
15
Oak-Mongo 1 1427 1434 1508 5956 7004
11
Oak-Mongo 1 1551 1554 1649 16383 22377
12
Oak-Mongo 1 1682 1682 1761 4961 4961
9
Oak-Mongo 1 1696 1696 1811 4608 4608
9
Oak-Mongo 1 1881 1881 1918 37519 37519
3
Oak-Mongo 1 28782 28782 28782 28782 28782
1
Oak-Mongo 1 25750 25750 25750 25750 25750
1
{code}
was (Author: egli):
Attached the CreateManyIndexedNodesTest which when run as follows:
-Xmx2048m -Dwarmup=10 -Druntime=20
--concurrency 1,1,1,1,1,1,1,1,1,1 CreateManyIndexedNodesTest Oak-Mongo
yields the following degradation on my box:
# CreateManyIndexedNodesTest C min 10% 50% 90% max
N
Oak-Mongo 1 1092 1131 1221 1379 1657
17
Oak-Mongo 1 1252 1269 1362 1471 1530
15
Oak-Mongo 1 1340 1362 1424 1507 1531
15
Oak-Mongo 1 1427 1434 1508 5956 7004
11
Oak-Mongo 1 1551 1554 1649 16383 22377
12
Oak-Mongo 1 1682 1682 1761 4961 4961
9
Oak-Mongo 1 1696 1696 1811 4608 4608
9
Oak-Mongo 1 1881 1881 1918 37519 37519
3
Oak-Mongo 1 28782 28782 28782 28782 28782
1
Oak-Mongo 1 25750 25750 25750 25750 25750
1
> performance degradation with growing index size on Oak-Mongo
> ------------------------------------------------------------
>
> Key: OAK-1465
> URL: https://issues.apache.org/jira/browse/OAK-1465
> Project: Jackrabbit Oak
> Issue Type: Bug
> Affects Versions: 0.17.1
> Reporter: Stefan Egli
> Attachments: CreateManyIndexedNodesTest.java
>
>
> Tested with an oak-snapshot of Monday Feb 23, 10AM EST.
> Noticed that when the amount of nodes indexed - eg wrt a particular property
> - the adding of nodes becomes slower and slower.
> Will attach a oak-run benchmark to underline this. Basically the scenario
> where this occurred was:
> * have a number of "level 1" nodes (eg 100)
> * under those "level 1" nodes, add a growing list of children, each with a
> property that is indexed (ie that index is actually growing and is probably
> causing the slowdown).
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