diff --git a/0019-pid1-bump-DefaultTasksMax-to-80-of-the-kernel-pid.ma.patch b/0019-pid1-bump-DefaultTasksMax-to-80-of-the-kernel-pid.ma.patch
new file mode 100644
index 0000000..3810785
--- /dev/null
+++ b/0019-pid1-bump-DefaultTasksMax-to-80-of-the-kernel-pid.ma.patch
@@ -0,0 +1,50 @@
+From bb46b12cbb84411e378cd45f2ac320a9ce53551c Mon Sep 17 00:00:00 2001
+From: openEuler Buildteam <buildteam@openeuler.org>
+Date: Tue, 10 Mar 2020 21:01:43 +0800
+Subject: [PATCH] pid1 bump DefaultTasksMax to 80% of the kernel pid.max value
+
+---
+ man/systemd-system.conf.xml          | 2 +-
+ src/core/system.conf.in              | 2 +-
+ units/user-.slice.d/10-defaults.conf | 2 +-
+ 3 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
+index e403fa5..afd51ed 100644
+--- a/man/systemd-system.conf.xml
++++ b/man/systemd-system.conf.xml
+@@ -360,7 +360,7 @@
+         <listitem><para>Configure the default value for the per-unit <varname>TasksMax=</varname> setting. See
+         <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+         for details. This setting applies to all unit types that support resource control settings, with the exception
+-        of slice units. Defaults to 15% of the minimum of <varname>kernel.pid_max=</varname>, <varname>kernel.threads-max=</varname>
++        of slice units. Defaults to 80% of the minimum of <varname>kernel.pid_max=</varname>, <varname>kernel.threads-max=</varname>
+         and root cgroup <varname>pids.max</varname>.
+         Kernel has a default value for <varname>kernel.pid_max=</varname> and an algorithm of counting in case of more than 32 cores.
+         For example with the default <varname>kernel.pid_max=</varname>, <varname>DefaultTasksMax=</varname> defaults to 4915,
+diff --git a/src/core/system.conf.in b/src/core/system.conf.in
+index 8112125..9e75b14 100644
+--- a/src/core/system.conf.in
++++ b/src/core/system.conf.in
+@@ -51,7 +51,7 @@
+ #DefaultBlockIOAccounting=no
+ #DefaultMemoryAccounting={{ 'yes' if MEMORY_ACCOUNTING_DEFAULT else 'no' }}
+ #DefaultTasksAccounting=yes
+-#DefaultTasksMax=15%
++#DefaultTasksMax=80%
+ #DefaultLimitCPU=
+ #DefaultLimitFSIZE=
+ #DefaultLimitDATA=
+diff --git a/units/user-.slice.d/10-defaults.conf b/units/user-.slice.d/10-defaults.conf
+index c81a00e..3b14c35 100644
+--- a/units/user-.slice.d/10-defaults.conf
++++ b/units/user-.slice.d/10-defaults.conf
+@@ -14,4 +14,4 @@ After=systemd-user-sessions.service
+ StopWhenUnneeded=yes
+ 
+ [Slice]
+-TasksMax=33%
++TasksMax=80%
+-- 
+1.8.3.1
+
diff --git a/systemd.spec b/systemd.spec
index 4f63901..cd63698 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -20,7 +20,7 @@
 Name:           systemd
 Url:            https://www.freedesktop.org/wiki/Software/systemd
 Version:        249
-Release:        13
+Release:        14
 License:        MIT and LGPLv2+ and GPLv2+
 Summary:        System and Service Manager
 
@@ -63,7 +63,8 @@ Patch0014:      0014-journal-don-t-enable-systemd-journald-audit.socket-b.patch
 Patch0015:      0015-systemd-change-time-log-level.patch
 Patch0016:      0016-fix-capsh-drop-but-ping-success.patch
 Patch0017:      0017-resolved-create-etc-resolv.conf-symlink-at-runtime.patch
-patch0018:      0018-nop_job-of-a-unit-must-also-be-coldpluged-after-deserization.patch
+Patch0018:      0018-nop_job-of-a-unit-must-also-be-coldpluged-after-deserization.patch
+Patch0019:      0019-pid1-bump-DefaultTasksMax-to-80-of-the-kernel-pid.ma.patch
 
 #backport
 Patch6000:      backport-core-fix-free-undefined-pointer-when-strdup-failed-i.patch
@@ -1485,6 +1486,9 @@ fi
 %{_libdir}/security/pam_systemd.so
 
 %changelog
+* Thu Mar 17 2022 xujing <xujing99@huawei.com> - 249-14
+- pid1 bump DefaultTasksMax to 80% of the kernel pid.max value
+
 * Thu Mar 17 2022 xujing <xujing99@huawei.com> - 249-13
 - allow more inodes in /dev an /tmp