systemd/pid1-bump-DefaultTasksMax-to-80-of-the-kernel-pid.ma.patch

From ad2da19e1e80a9ab9d0dfae17a74f5009e4d1898 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/manager.c                   | 2 +-
 src/core/system.conf.in              | 2 +-
 units/user-.slice.d/10-defaults.conf | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
index 3c06b65..72f366e 100644
--- a/man/systemd-system.conf.xml
+++ b/man/systemd-system.conf.xml
@@ -501,7 +501,7 @@
         <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/manager.c b/src/core/manager.c
index 45c8966..ce20d6b 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -114,7 +114,7 @@
 /* How many units and jobs to process of the bus queue before returning to the event loop. */
 #define MANAGER_BUS_MESSAGE_BUDGET 100U
 
-#define DEFAULT_TASKS_MAX ((CGroupTasksMax) { 15U, 100U }) /* 15% */
+#define DEFAULT_TASKS_MAX ((CGroupTasksMax) { 80U, 100U }) /* 80% */
 
 static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
 static int manager_dispatch_cgroups_agent_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
diff --git a/src/core/system.conf.in b/src/core/system.conf.in
index 05eb681..472d1ca 100644
--- a/src/core/system.conf.in
+++ b/src/core/system.conf.in
@@ -58,7 +58,7 @@
 #DefaultIPAccounting=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 f688eac..20c39ec 100644
--- a/units/user-.slice.d/10-defaults.conf
+++ b/units/user-.slice.d/10-defaults.conf
@@ -13,4 +13,4 @@ Documentation=man:user@.service(5)
 StopWhenUnneeded=yes
 
 [Slice]
-TasksMax=33%
+TasksMax=80%
-- 
2.33.0