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--- cookbooks:3.3.x:core [2012/11/05 14:55]
klaus3000 [DNS Parameters]
+++ cookbooks:3.3.x:core [2013/01/02 17:56]
klaus3000 [tcp_rd_buf_size]
@@ Line 1542: / Line 1542: @@
 ==== tcp_rd_buf_size ====
-Buffer size used for tcp reads. A high buffer size increases performance on server with few connections and lot of traffic on them, but also increases memory consumption (so for lots of connection is better to use a low value). Note also that this value limits the maximum datagram size that can be received over tcp.
+Buffer size used for tcp reads. A high buffer size increases performance on server with few connections and lot of traffic on them, but also increases memory consumption (so for lots of connection is better to use a low value). Note also that this value limits the maximum message size (SIP, HTTP) that can be received over tcp.
-Default: 4096, can be changed at runtime.
+The value is internally limited to 16MByte, for higher values recompile Kamailio with higher limit in tcp_options.c (search for "rd_buf_size" and 16777216). Further, you may need to increase the private memory, and if you process the message stateful you may also have to increase the shared memory.
+Default: 4096, can be changed at runtime.
 ==== tcp_send_timeout ====

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