From 879102a20d6a530926140bd622250f3a0cea5508 Mon Sep 17 00:00:00 2001
From: dutor <440396+dutor@users.noreply.github.com>
Date: Thu, 12 May 2022 16:28:56 +0800
Subject: [PATCH 1/2] Added tuned profile for Nebula Graph

---
 conf/tuned/README.md         |  8 ++++++++
 conf/tuned/nebula/tuned.conf | 30 ++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 conf/tuned/README.md
 create mode 100644 conf/tuned/nebula/tuned.conf

diff --git a/conf/tuned/README.md b/conf/tuned/README.md
new file mode 100644
index 00000000000..cada719b08e
--- /dev/null
+++ b/conf/tuned/README.md
@@ -0,0 +1,8 @@
+# Summary
+
+These are tuned profile to configure the system to optimize for the Nebula Graph service.
+
+Follow below steps to utilize:
+ * Install the tuned service if absent, and enable it with `systemctl`.
+ * Copy the __nebula__ directory into `/etc/tuned`.
+ * Execute `tuned-adm profile nebula` to activate the profile.
diff --git a/conf/tuned/nebula/tuned.conf b/conf/tuned/nebula/tuned.conf
new file mode 100644
index 00000000000..0036575c9e5
--- /dev/null
+++ b/conf/tuned/nebula/tuned.conf
@@ -0,0 +1,30 @@
+[main]
+summary=Optimize for Nebula Graph DBMS
+include=latency-performance
+
+
+[vm]
+transparent_hugepages=never
+
+
+[sysctl]
+kernel.core_pattern=core
+kernel.core_uses_pid=1
+kernel.numa_balancing=0
+
+vm.swappiness=0
+vm.oom_dump_tasks=1
+vm.min_free_kbytes=5242880
+vm.max_map_count=131060
+vm.dirty_background_ratio = 3
+vm.dirty_ratio = 20
+vm.dirty_expire_centisecs = 500
+vm.dirty_writeback_centisecs = 100
+
+net.core.busy_read=50
+net.core.busy_poll=50
+net.core.somaxconn=4096
+net.ipv4.tcp_max_syn_backlog=4096
+net.core.netdev_max_backlog=10240
+net.ipv4.tcp_fastopen=3
+net.ipv4.tcp_slow_start_after_idle=0

From 1393e8f634b02e11c69d025c11e5266b5d71ea47 Mon Sep 17 00:00:00 2001
From: dutor <440396+dutor@users.noreply.github.com>
Date: Thu, 12 May 2022 16:33:34 +0800
Subject: [PATCH 2/2] add comment on min_free_kbytes

---
 conf/tuned/nebula/tuned.conf | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/conf/tuned/nebula/tuned.conf b/conf/tuned/nebula/tuned.conf
index 0036575c9e5..e9e34e9080c 100644
--- a/conf/tuned/nebula/tuned.conf
+++ b/conf/tuned/nebula/tuned.conf
@@ -14,6 +14,8 @@ kernel.numa_balancing=0
 
 vm.swappiness=0
 vm.oom_dump_tasks=1
+# min_free_kbytes is suggested to set to approximately 2% of the total memory.
+# 1GB at least and 5GB at most.
 vm.min_free_kbytes=5242880
 vm.max_map_count=131060
 vm.dirty_background_ratio = 3