diff --git a/change-the-default-percentage-when-dirty-data-starts.patch b/change-the-default-percentage-when-dirty-data-starts.patch
new file mode 100644
index 0000000000000000000000000000000000000000..297edcc84d2007b6d8e7f5d2132822b01dfb6d7c
--- /dev/null
+++ b/change-the-default-percentage-when-dirty-data-starts.patch
@@ -0,0 +1,26 @@
+From 9045cc4a583ea644fa1ef8454e4c3d2c63a9d248 Mon Sep 17 00:00:00 2001
+From: hongrongxuan <hongrongxuan@huawei.com>
+Date: Mon, 26 Dec 2022 09:29:48 +0800
+Subject: [PATCH] change the default percentage when dirty data starts
+ writeback
+
+---
+ profiles/throughput-performance/tuned.conf | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/profiles/throughput-performance/tuned.conf b/profiles/throughput-performance/tuned.conf
+index 98c6b26..84ca25a 100644
+--- a/profiles/throughput-performance/tuned.conf
++++ b/profiles/throughput-performance/tuned.conf
+@@ -35,7 +35,7 @@ readahead=>4096
+ #
+ # The generator of dirty data starts writeback at this percentage (system default
+ # is 20%)
+-vm.dirty_ratio = 40
++vm.dirty_ratio = 60
+ 
+ # Start background writeback (via writeback threads) at this percentage (system
+ # default is 10%)
+-- 
+2.27.0
+
diff --git a/tuned.spec b/tuned.spec
index a87fcdc192fc39f0635d7cb9ece0580f7760adf1..8f521ad0c6b6e225e40bf2ede70f01c36325bbff 100644
--- a/tuned.spec
+++ b/tuned.spec
@@ -1,7 +1,7 @@
 Summary: A system tuning service for Linux
 Name: tuned
 Version: 2.19.0
-Release: 2
+Release: 3
 License: GPLv2+
 Source0: https://github.com/redhat-performance/%{name}/archive/v%{version}%{?prerel2}.tar.gz#/%{name}-%{version}%{?prerel2}.tar.gz
 URL: http://www.tuned-project.org/
@@ -33,6 +33,7 @@ Patch0: bugfix-tuned-2.8.0-restart-after-kill-dbus.patch
 #this is used to compatible with old tuned version like 2.10
 Patch1: tuned-2.18.0-rhel-8-profiles.patch 
 Patch2: tuned-2.18.0-sd-load-balance.patch
+Patch3: change-the-default-percentage-when-dirty-data-starts.patch
 
 Provides:     tuned-gtk
 Provides:     tuned-utils
@@ -296,6 +297,9 @@ fi
 %{_mandir}/man7/tuned-profiles-spectrumscale-ece.7*
 
 %changelog
+* Mon Dec 26 2022 hongrongxuan <hongrongxuan@huawei.com> - 2.19.0-3
+- change the default percentage when dirty data starts writeback
+
 * Tue Nov 8 2022 Qingqing Li <liqingqing3@huawei.com> - 2.19.0-2
 - backport some patches to compatible with version 2.10