Add files via upload

etc/sysctl.d/80-network-tuning.conf

@@ -4,9 +4,17 @@ net.ipv4.tcp_ecn=0
 # window scaling
 net.ipv4.tcp_window_scaling=1
 
+# Tuning dedicated memory to network cards
+net.core.rmem_default = 1048576
+net.core.wmem_default = 1048576
+
+# UDP tuning
+net.ipv4.udp_rmem_min = 8192
+net.ipv4.udp_wmem_min = 8192
+
 # increase linux autotuning tcp buffer limits
-net.ipv4.tcp_rmem=8192 87380 16777216
-net.ipv4.tcp_wmem=8192 65536 16777216
+net.ipv4.tcp_rmem = 4096 1048576 2097152
+net.ipv4.tcp_wmem = 4096 65536 16777216
 
 # increase TCP max buffer size
 net.core.rmem_max=16777216
@@ -17,10 +25,10 @@ net.core.netdev_max_backlog=16384
 net.core.dev_weight=64
 
 # Increase number of incoming connections
-net.core.somaxconn=32768
+# net.core.somaxconn=8096
 
 # Increase the maximum amount of option memory buffers
-net.core.optmem_max=65535
+net.core.optmem_max = 65536
 
 # Increase the tcp-time-wait buckets pool size to prevent simple DOS attacks
 net.ipv4.tcp_max_tw_buckets=1440000
@@ -74,3 +82,8 @@ net.ipv4.tcp_fastopen=3
 # This will enusre that immediatly subsequent connections use the new values
 net.ipv4.route.flush=1
 net.ipv6.route.flush=1
+
+# Tune TCP keepalive parameters
+net.ipv4.tcp_keepalive_time = 60
+net.ipv4.tcp_keepalive_intvl = 10
+net.ipv4.tcp_keepalive_probes = 6

etc/sysctl.d/90-vm-tuning.conf

@@ -1,4 +1,5 @@
-vm.swappiness=10
-vm.dirty_ratio = 80
-vm.dirty_background_ratio = 5
+vm.swappiness=0
+vm.dirty_ratio = 3
+vm.dirty_background_ratio = 2
+vm.vfs_cache_pressure = 50
 vm.dirty_expire_centisecs = 12000