Index: net/ipv4/tcp.c
===================================================================
--- net/ipv4/tcp.c	(revision 25)
+++ net/ipv4/tcp.c	(working copy)
@@ -3549,6 +3549,13 @@
 	tcp_init_mem(&init_net);
 	/* Set per-socket limits to no more than 1/128 the pressure threshold */
 	limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7);
+
+	/*
+	 * Adjust limit so it performs well on systems with little memory. If
+	 * this causes errors increase L4Linux main memory
+	 */
+	limit =  limit < 768U * 1024 ? 768U * 1024 : limit;
+
 	max_wshare = min(4UL*1024*1024, limit);
 	max_rshare = min(6UL*1024*1024, limit);