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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2009/03/28 10:05:51 UTC

[jira] Commented: (LUCENE-1577) Benchmark of different in RAM realtime techniques

    [ https://issues.apache.org/jira/browse/LUCENE-1577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12693414#action_12693414 ] 

Michael McCandless commented on LUCENE-1577:
--------------------------------------------

Are these tests measuring adding a single doc, then searching on it?  What are the numbers you measure in the results (eg 25882 for LuceneRealtimeWriter)?

I think we need a more realistic test for near real-time search, but I'm not sure exactly what that is.

In LUCENE-1516 I've added a benchmark task to periodically open a new near real-time reader from the writer, and then tested it while doing bulk indexing.  But that's not a typical test, I think (normally bulk indexing is done up front, and only a "trickle" of updates to doc are then done for near real-time search).  Maybe we just need an updateDocument task, which randomly picks a doc (identified by a primary-key "docid" field) and replaces it.  Then, benchmark already has the ability to rate-limit how frequently docs are updated.

> Benchmark of different in RAM realtime techniques
> -------------------------------------------------
>
>                 Key: LUCENE-1577
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1577
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/*
>    Affects Versions: 2.4.1
>            Reporter: Jason Rutherglen
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1577.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> A place to post code that benchmarks the differences in the speed of indexing and searching using different realtime techniques.

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