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https://issues.apache.org/jira/browse/OAK-1312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15585767#comment-15585767
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Chetan Mehrotra commented on OAK-1312:
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h4. Benchmark
Implemented a benchmark and committed that to trunk in r1765455. It
has 3 parts
* main - The code here create an app:Asset structure
* Reader - This thread does reads of random assets and read the
'jcr:content/metadata/status' property
* Mutator - This thread modifies the status property of random asset nodes
h4. Benchmark - Overhead of new bundling logic when bundling not in use
It does not depend on bundling api and first purpose is to see overhead of new
bundling logic when bundling feature itself is not used.
{noformat}
# BundlingNodeTest C min 10% 50% 90% max
N Reader Mutator Assets#
Oak-Mongo-DS 1 189 280 432 817 1414
123 75403 2817 1390 #oak:Resource (trunk)
Oak-Mongo-DS 5 362 489 735 1612 2740
340 75093 2464 3580 #oak:Resource (trunk)
Oak-Mongo-DS 1 224 292 453 732 1591
122 77328 2794 1400 #oak:Resource (OAK-1312 branch)
Oak-Mongo-DS 5 336 489 735 1476 2787
349 73245 2496 3660 #oak:Resource (OAK-1312 branch)
{noformat}
With above numbers it can be concluded that there is no overhead of bundling
related change in critical path
> Bundle nodes into a document
> ----------------------------
>
> Key: OAK-1312
> URL: https://issues.apache.org/jira/browse/OAK-1312
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, documentmk
> Reporter: Marcel Reutegger
> Assignee: Chetan Mehrotra
> Labels: performance
> Fix For: 1.6
>
> Attachments: OAK-1312-meta-prop-handling.patch,
> OAK-1312-review-v1.diff, OAK-1312-review-v2.diff
>
>
> For very fine grained content with many nodes and only few properties per
> node it would be more efficient to bundle multiple nodes into a single
> MongoDB document. Mostly reading would benefit because there are less
> roundtrips to the backend. At the same time storage footprint would be lower
> because metadata overhead is per document.
> Feature branch -
> https://github.com/chetanmeh/jackrabbit-oak/compare/trunk...chetanmeh:OAK-1312
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