indexing using DataImportHandler does not use entire CPU capacities
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Key: SOLR-2356
URL: https://issues.apache.org/jira/browse/SOLR-2356
Project: Solr
Issue Type: Improvement
Components: update
Affects Versions: 4.0
Environment: intel xeon processor (4 cores), Debian Linux Lenny,
OpenJDK 64bits server v1.6.0
Reporter: colby
Priority: Minor
When I use a DataImportHandler to index a large number of documents (~35M), cpu
usage doesn't go over than 100% cpu (i.e. just one core).
When I configure 4 threads for the <entity> tag, the cpu usage is splitted to
25% per core but never use 400% of cpu (i.e 100% of the 4 cores)
I use solr embedded with jetty server.
Is there a way to tune this feature in order to use all cores and improve
indexing performances ?
Because for the moment, an extra script (PHP) gives better indexing
performances than DIH.
thanks
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