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--- linux:sysctl [2011/01/09 23:12]
a
+++ linux:sysctl [2016/02/23 10:52] (current)
zagi
@@ Line 1: / Line 1: @@
 ====== Linux sysctl options ======
@@ Line 63: / Line 61: @@
 #
 # Do not send ICMP redirects (we are not a router)
-net/ipv4/conf/all/send_redirects = 1
+net/ipv4/conf/all/send_redirects = 0
 # Do not accept IP source route packets (we are not a router)
-net/ipv4/conf/all/accept_source_route = 1
+net/ipv4/conf/all/accept_source_route = 0
 # tcp/ip tweak - window size
@@ Line 88: / Line 86: @@
 net.ipv4.ipfrag_time = 30
-net.ipv4.tcp_ecn = 1
+net.ipv4.tcp_ecn = 0
 net.ipv4.tcp_syncookies = 1
 net.ipv4.tcp_timestamps = 1
+net.ipv4.tcp_sack = 1
 # Linux 2.6 has only 32Mb shared memory
@@ Line 99: / Line 98: @@
 #net.core.somaxconn=512
+# recommended for hosts with jumbo frames enabled
+net.ipv4.tcp_mtu_probing=1
+net.ipv4.tcp_allowed_congestion_control = highspeed  lp cubic reno
+net.ipv4.tcp_congestion_control = highspeed
+net.ipv4.tcp_slow_start_after_idle=0
 </code>