title: setFetchBatchSize doesn't seem to work properly
body: <p>I ask a few questions on this topic but still can't get it to work.  I have a core data with 10k+ rows of people names that i am showing in a tableview.  I would like to be able to search and update the table with every letter.  It's very laggy.  As suggested i watch the  WWWDC '10 core data presentation and was trying to implement </p>
  
  <pre><code>[request setFetchBatchSize:50];
  </code></pre>
  
  <p>Doesn't seem to work.  When i use instruments to check core data it still shows that there is still 10k request when loading the tableview and when i search it also gets all the results.
  Is there anything else that needs to be done to set the batch size or thats not something that will help me.</p>
  
  <p>The only thing that seems to work is setting the fetchlimit to 100 when i search.  Do you think its a good solution?</p>
  
  <p>Thanks in advance!</p>