--- a/net/ipv4/tcp.c 2016-08-20 09:09:38.000000000 -0700 +++ b/net/ipv4/tcp.c 2016-09-01 14:52:17.239459557 -0700 @@ -3104,7 +3104,7 @@ static void __init tcp_init_mem(void) { - unsigned long limit = nr_free_buffer_pages() / 16; + unsigned long limit = nr_free_buffer_pages() / 8; limit = max(limit, 128UL); sysctl_tcp_mem[0] = limit / 4 * 3; /* 4.68 % */