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http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-1019?pa...
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Guillaume Smet commented on HSEARCH-1019:
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Hi Sanne,
Very promising numbers. Is there a snapshot we can test somewhere so that we also test
your patch on standard hard drives?
FYI, Laurent did some further testing to understand the difference between his laptop and
mine (see numbers above: Lucene 3.4 is 20x slower for him whereas it is only 3x slower on
my laptop): this is due to write barriers being enabled by default even for ext3 on the
newest Linux kernels - >= 3.1 - (and they also are enabled by default on ext4). I still
have ext3 with an old kernel and that's why they are disabled on my laptop.
--
Guillaume
Profile mass indexer to reduce number of index commits
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Key: HSEARCH-1019
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-1019
Project: Hibernate Search
Issue Type: Improvement
Components: massindexer
Affects Versions: 4.0.0.Final
Reporter: Hardy Ferentschik
Assignee: Sanne Grinovero
Priority: Blocker
Fix For: 4.1.0.Alpha1
We need to profile the new mass indexer design and try to reduce the number of index
commits. Performance of the filesystem based directory declined to a bug fix in Lucene
(
https://issues.apache.org/jira/browse/LUCENE-3418). Trying to reduce the amount of index
commits (and hence fsync calls) might alleviate the performance loss.
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