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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "FAQ" by HossMan
Date Tue, 03 Jan 2012 20:36:02 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for change notification.

The "FAQ" page has been changed by HossMan:
http://wiki.apache.org/solr/FAQ?action=diff&rev1=81&rev2=82

Comment:
QTime

  
  See also the `<maxWarmingSearchers/>` option in SolrConfigXml.
  
+ == Why is the QTime Solr returns lower then the amount of time I'm measuring in my client?
==
+ 
+ "QTime" only reflects the amount of time Solr spent processing the request.  It does not
reflect any time spent reading the request from the client across the network, or writing
the response back to the client. (This should hopefully be obvious since the QTime is actually
included in body of the response.)
+ 
+ The time spent on this network I/O can be a non-trivial contribution to the the total time
as observed from clients, particularly because there are many cases where Solr can stream
"stored fields" for the response (ie: requested by the "fl" param) directly from the index
as part of the response writing, in which case disk I/O reading those stored field values
may contribute to the total time observed by clients outside of the time measured in QTime.
+ 
+ 
  = Developing =
  == Where can I find the latest and Greatest Code? ==
  In the [[http://lucene.apache.org/solr/version_control.html|Solr Version Control Repository]].

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