text: **15.3.4 Workload**
  
  Processor consumption depends on the following items: 
  
  (cid:2) Number of collections 
  (cid:2) Number of documents for each collection 
  (cid:2) Number of concurrently indexed collections 
  (cid:2) Required indexing throughput 
  (cid:2) Query load 
  
  For more information, see the capacity planning topics in the introduction and planning guides 
  for Multiplatforms and z/OS in the IBM Knowledge Center: 
  
  (cid:2) http://www.ibm.com/support/knowledgecenter/SSQHWE_9.5.0/com.ibm.ondemandtoc.doc/p 
  lanning.htm 
  
  (cid:2) http://www.ibm.com/support/knowledgecenter/SSEPCD_9.5.0/com.ibm.ondemandtoc.doc/p 
  lanning.htm 
  
  A minimum of one processor, 2 GB of RAM, and 8 GB of swap space must be assigned to the 
  FTS Server. For more information, see*Hardware and Software Requirements*: 
  
  http://www.ibm.com/support/docview.wss?rs=129&uid=swg27021456 
  
  **15.3.5 Memory heap size**
  
  During indexing and searching, the FTS Server consumes heap memory for storing the 
  indexed documents, preprocessing and indexing queues, and indexing memory structures. To 
  optimize the performance of the FTS Server, it is important that the maximum heap memory 
  size in the Java virtual machine (JVM), the queue size, and file size limits are configured 
  correctly. You can configure the maximum heap size by using the configuration tool. 