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From Grant Ingersoll <>
Subject Re: good performance news
Date Mon, 17 Aug 2009 21:27:43 GMT

On Aug 16, 2009, at 3:46 PM, Yonik Seeley wrote:

> I just profiled a CSV upload, and aside from the CSV parsing, Solr
> adds pretty much no overhead!
> I was expecting some non-trivial overhead due to Solr's
> SolrInputDocument, update processing pipeline, and update handler...
> but profiling showed that it amounted to less than 1%.
> 85% of the time was spent in Lucene's IndexWriter
> 12% of the time was spent in the CSV parser2

I'm curious how much overhead there is in parsing Solr XML.  I will  
try some tests on that later if I get a chance.  We really should push  
clients to use the Binary request/response formats in most cases.

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