diff --git a/sysctl.conf b/sysctl.conf
deleted file mode 100644
index d67f7a6..0000000
--- a/sysctl.conf
+++ /dev/null
@@ -1,46 +0,0 @@
-### --- OPTIMIZATION --- ###
-# swap usage (default = 60)
-vm.swappiness = 5
-# (default = 100)
-vm.vfs_cache_pressure = 1000
-
-# http://www.linux.org.ru/wiki/en/User:shimon/12309
-# reduce memory size allowed to process (default = 0 )
-vm.overcommit_memory = 2
-# memory allowed to process: total_swap + total_ram * overcommit_ratio / 100 (default = 50 )
-vm.overcommit_ratio = 50
-# disk buffer size (default = 0 )
-vm.dirty_bytes = 1048576
-# disk buffer size (default = 0 )
-vm.dirty_background_bytes = 1048576
-# (default = 40)
-vm.dirty_ratio = 20
-# (default = 10)
-vm.dirty_background_ratio = 5
-
-# -- more 12309 tricks --
-# (default = 3000)
-vm.dirty_expire_centisecs =  1000
-# (default = 500)
-vm.dirty_writeback_centisecs = 200
-
-### ----- SECURITY ----- ###
-# enable ip forwarding (default = 0)
-net.ipv4.ip_forward = 0
-# enable filtering by source IP address (default = 0)
-net.ipv4.conf.all.rp_filter = 1
-net.ipv4.conf.default.rp_filter = 1
-# accept ICMP-messages for routes (default = 1)
-net.ipv4.conf.default.accept_redirects = 0
-# enable secure redirects (default = 1)
-net.ipv4.conf.all.secure_redirects = 1
-# allow sender to define route (default = 0)
-net.ipv4.conf.default.accept_source_route = 0
-
-### ------ OTHER ------- ###
-# reboot on kernel panic, seconds (default = 0)
-kernel.panic = 5
-# several multimedia apps require this option
-kernel.shmmax = 2147483647
-# laptop mode (default = 5)
-vm.laptop_mode=5
diff --git a/sysctl.d/12309.conf b/sysctl.d/12309.conf
new file mode 100644
index 0000000..db10e8b
--- /dev/null
+++ b/sysctl.d/12309.conf
@@ -0,0 +1,24 @@
+# swap usage (default = 60)
+vm.swappiness = 5
+
+# http://www.linux.org.ru/wiki/en/User:shimon/12309
+# reduce memory size allowed to process (default = 0 )
+vm.overcommit_memory = 2
+# memory allowed to process: total_swap + total_ram * overcommit_ratio / 100 (default = 50 )
+vm.overcommit_ratio = 80
+# disk buffer size (default = 0 )
+vm.dirty_bytes = 2097152
+# disk buffer size (default = 0 )
+vm.dirty_background_bytes = 2097152
+# (default = 100)
+vm.vfs_cache_pressure = 50
+# (default = 40)
+vm.dirty_ratio = 3
+# (default = 10)
+vm.dirty_background_ratio = 3
+
+# -- more 12309 tricks --
+# (default = 3000)
+vm.dirty_expire_centisecs =  1000
+# (default = 500)
+vm.dirty_writeback_centisecs = 200
diff --git a/sysctl.d/net.conf b/sysctl.d/net.conf
new file mode 100644
index 0000000..f42c797
--- /dev/null
+++ b/sysctl.d/net.conf
@@ -0,0 +1,13 @@
+# ip forwarding (default = 0)
+net.ipv4.ip_forward = 0
+# filtering by source IP address (default = 0)
+net.ipv4.conf.all.rp_filter = 1
+net.ipv4.conf.default.rp_filter = 1
+# ICMP-messages for routes (default = 1)
+net.ipv4.conf.default.accept_redirects = 0
+# enable secure redirects (default = 1)
+net.ipv4.conf.all.secure_redirects = 1
+# forbid sender to define route (default = 0)
+net.ipv4.conf.default.accept_source_route = 0
+
+
diff --git a/sysctl.d/other.conf b/sysctl.d/other.conf
new file mode 100644
index 0000000..56e726b
--- /dev/null
+++ b/sysctl.d/other.conf
@@ -0,0 +1,7 @@
+### ------ OTHER ------- ###
+# reboot on kernel panic, seconds (default = 0)
+kernel.panic = 5
+# several multimedia apps require this option
+kernel.shmmax = 2147483647
+# laptop mode (default = 5)
+vm.laptop_mode=5