From 0d89432ea61bea6901abc6a34dbb9a20172f75ab Mon Sep 17 00:00:00 2001
From: Benny Prijono <bennylp@teluu.com>
Date: Sun, 13 Jul 2008 13:12:36 +0000
Subject: Ticket #564: Reduce the memory usage for default pjsip settings

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@2131 74dad513-b988-da41-8d7b-12977e46ad98
---
 pjsip/include/pjsip/sip_config.h | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

(limited to 'pjsip/include')

diff --git a/pjsip/include/pjsip/sip_config.h b/pjsip/include/pjsip/sip_config.h
index d16245bf..34cae270 100644
--- a/pjsip/include/pjsip/sip_config.h
+++ b/pjsip/include/pjsip/sip_config.h
@@ -157,18 +157,24 @@ PJ_INLINE(pjsip_cfg_t*) pjsip_cfg(void)
 
 /**
  * Specify maximum transaction count in transaction hash table.
- * Default value is 16*1024
+ * For efficiency, the value should be 2^n-1 since it will be
+ * rounded up to 2^n.
+ *
+ * Default value is 1023
  */
 #ifndef PJSIP_MAX_TSX_COUNT
-#   define PJSIP_MAX_TSX_COUNT		(16*1024)
+#   define PJSIP_MAX_TSX_COUNT		(1024-1)
 #endif
 
 /**
  * Specify maximum number of dialogs in the dialog hash table.
- * Default value is 16*1024.
+ * For efficiency, the value should be 2^n-1 since it will be
+ * rounded up to 2^n.
+ *
+ * Default value is 511.
  */
 #ifndef PJSIP_MAX_DIALOG_COUNT
-#   define PJSIP_MAX_DIALOG_COUNT	(16*1024)
+#   define PJSIP_MAX_DIALOG_COUNT	(512-1)
 #endif
 
 
@@ -553,14 +559,14 @@ PJ_INLINE(pjsip_cfg_t*) pjsip_cfg(void)
  * Initial memory size for UA layer
  */
 #ifndef PJSIP_POOL_LEN_UA
-#   define PJSIP_POOL_LEN_UA		4000
+#   define PJSIP_POOL_LEN_UA		512
 #endif
 
 /**
  * Memory increment for UA layer.
  */
 #ifndef PJSIP_POOL_INC_UA
-#   define PJSIP_POOL_INC_UA		4000
+#   define PJSIP_POOL_INC_UA		512
 #endif
 
 #define PJSIP_MAX_FORWARDS_VALUE	70
@@ -571,17 +577,23 @@ PJ_INLINE(pjsip_cfg_t*) pjsip_cfg(void)
 /* Transaction related constants. */
 
 /**
- * Initial memory size for transaction layer
+ * Initial memory size for transaction layer. The bulk of pool usage
+ * for transaction layer will be used to create the hash table, so 
+ * setting this value too high will not help too much with reducing
+ * fragmentation and the memory will most likely be wasted.
  */
 #ifndef PJSIP_POOL_TSX_LAYER_LEN
-#   define PJSIP_POOL_TSX_LAYER_LEN	4000
+#   define PJSIP_POOL_TSX_LAYER_LEN	512
 #endif
 
 /**
- * Memory increment for transaction layer.
+ * Memory increment for transaction layer. The bulk of pool usage
+ * for transaction layer will be used to create the hash table, so 
+ * setting this value too high will not help too much with reducing
+ * fragmentation and the memory will most likely be wasted.
  */
 #ifndef PJSIP_POOL_TSX_LAYER_INC
-#   define PJSIP_POOL_TSX_LAYER_INC	4000
+#   define PJSIP_POOL_TSX_LAYER_INC	512
 #endif
 
 /**
-- 
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