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authorSven Eden <yamakuzure@gmx.net>2017-01-03 09:38:07 +0100
committerSven Eden <yamakuzure@gmx.net>2017-03-14 10:18:27 +0100
commit7f231684fd2943d4d5585022ec8595ea1b67cf8a (patch)
tree675ed54d94cf0e93e931a577047ac8f9f3eae10f /README
parent1532f28b7cf3e6e02e74691450b2b5379be6b805 (diff)
Prep v223: Sync basic build system with upstream.
Diffstat (limited to 'README')
-rw-r--r--README18
1 files changed, 16 insertions, 2 deletions
diff --git a/README b/README
index 53220ff3f..759594976 100644
--- a/README
+++ b/README
@@ -82,11 +82,11 @@ REQUIREMENTS:
CONFIG_SECCOMP
CONFIG_CHECKPOINT_RESTORE (for the kcmp() syscall)
- Required for CPUShares in resource control unit settings
+ Required for CPUShares= in resource control unit settings
CONFIG_CGROUP_SCHED
CONFIG_FAIR_GROUP_SCHED
- Required for CPUQuota in resource control unit settings
+ Required for CPUQuota= in resource control unit settings
CONFIG_CFS_BANDWIDTH
For systemd-bootchart, several proc debug interfaces are required:
@@ -97,6 +97,15 @@ REQUIREMENTS:
CONFIG_EFIVAR_FS
CONFIG_EFI_PARTITION
+ We recommend to turn off Real-Time group scheduling in the
+ kernel when using systemd. RT group scheduling effectively
+ makes RT scheduling unavailable for most userspace, since it
+ requires explicit assignment of RT budgets to each unit whose
+ processes making use of RT. As there's no sensible way to
+ assign these budgets automatically this cannot really be
+ fixed, and it's best to disable group scheduling hence.
+ CONFIG_RT_GROUP_SCHED=n
+
Note that kernel auditing is broken when used with systemd's
container code. When using systemd in conjunction with
containers, please make sure to either turn off auditing at
@@ -261,6 +270,11 @@ WARNINGS:
false positives will be triggered by code which violates
some rules but is actually safe.
+ Currently, systemd-timesyncd defaults to use the Google NTP
+ servers if not specified otherwise at configure time. You
+ really should not ship an OS or device with this default
+ setting. See DISTRO_PORTING for details.
+
ENGINEERING AND CONSULTING SERVICES:
ENDOCODE <https://endocode.com/> offers professional
engineering and consulting services for systemd. Please