title: Indexing speed performances with and without Solrcloud
body: <p>I've done 2 performances tests to measures the indexing speed with a collection of 235280 documents: </p>
  
  <p><b>1st test</b> : 1 solr instance <b>without</b> SolrCloud: indexing speed = 6191 doc/s</p>
  
  <p><b>2nd test</b> : 4 solr instance (4 shards) linked <b>with</b> SolrCloud : indexing speed = 4506 doc/s</p>
  
  <p>I use 8 CPUs.</p>
  
  <p>So, I've some questions about these results :</p>
  
  <p><b>Q1 : </b> Usually, Does the number of solr instances improve or degrade indexing speed ?</p>
  
  <p><b>Q2 : </b> Does SolrCloud degrade indexing speed ?</p>
  
  <p><b>Q3 : </b> Why do I get a decrease of performances when I use SolrCloud ? Do I missed something (setting ?) ? </p>
  
  <p><b>Edit :</b></p>
  
  <p>I use a CSV update handler to index my collection.</p>