[PATCH] sp13: Document message buffer usage and adjust configuration

[Joel Sherrill]

---
 testsuites/sptests/sp13/system.h | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/testsuites/sptests/sp13/system.h b/testsuites/sptests/sp13/system.h
index 3b170bf..8e5ffbb 100644
--- a/testsuites/sptests/sp13/system.h
+++ b/testsuites/sptests/sp13/system.h
@@ -66,13 +66,28 @@ TEST_EXTERN rtems_name Queue_name[ 4 ];      /* array of queue names */
 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
 
 /*
- *  First three created in init.c, last created in task1.c.
+ *  Created in init.c:
+ *    Q1 - CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 100, MESSAGE_SIZE ) (1600)
+ *    Q2 - CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 10, MESSAGE_SIZE )   (160)
+ *    Q3 - CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 100, MESSAGE_SIZE ) (1600)
+ *
+ *  Q1 and Q2 deleted in task1.c
+ *
+ *  Q1 recreated in task1.c
+ *    Q1 - CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 100, 20 )           (2000)
+ *
+ *  Q1 deleted again in task1.c.
+ *  Q1 repeatedly created and deleted for 2 messages of 1-1030 bytes
+ *  in length
+ *    Q1 - CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 1030, 2 )           (2000)
+ *
+ *  Thus the peak message memory needed is technically only:
+ *      Q3 + third instance of Q1 at peak of two 1030 byte messages.
+ *
  */
 #define CONFIGURE_MESSAGE_BUFFER_MEMORY \
    CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 100, MESSAGE_SIZE ) + \
-   CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 10, MESSAGE_SIZE ) + \
-   CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 100, MESSAGE_SIZE ) + \
-   CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 100, 20 )
+   CONFIGURE_MESSAGE_BUFFERS_FOR_QUEUE( 1030, 2 )
 
 #define CONFIGURE_EXTRA_TASK_STACKS         (3 * RTEMS_MINIMUM_STACK_SIZE)
 
-- 
1.9.3