title: Tuning recommendations from mysqltuner.pl: query_cache_limit
body: <p>The <a href="http://mysqltuner.pl/mysqltuner.pl" rel="noreferrer"><code>mysqltuner.pl</code></a> script gives me the following recommendation:</p>
  
  <pre><code>query_cache_limit (&gt; 1M, or use smaller result sets)
  </code></pre>
  
  <p>And MySQL status output shows:</p>
  
  <pre><code>mysql&gt; SHOW STATUS LIKE 'Qcache%';
  +-------------------------+------------+
  | Variable_name           | Value      |
  +-------------------------+------------+
  | Qcache_free_blocks      | 12264      | 
  | Qcache_free_memory      | 1001213144 | 
  | Qcache_hits             | 3763384    | 
  | Qcache_inserts          | 54632419   | 
  | Qcache_lowmem_prunes    | 0          | 
  | Qcache_not_cached       | 6656246    | 
  | Qcache_queries_in_cache | 55280      | 
  | Qcache_total_blocks     | 122848     | 
  +-------------------------+------------+
  8 rows in set (0.00 sec)
  </code></pre>
  
  <p>From the status output above, how can I judge whether or nor the suggested increase in <code>query_cache_limit</code> is needed?</p>