kernel.sched_rt_runtime_us - a global limit on how much time realtime
scheduling may use. A run time of -1 specifies runtime == period, ie. no limit.
Resolves: rhbz#1346715
Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
It was found during code review that the kernel always try to
migrate timers away from idle CPUs to busy CPUs. Real-time
CPUs running dpdk polling threads for example, are busy so
they are a great candidate to receive timers from idle CPUs
(see get_nohz_timer_target() in the kernel sources).
It is not clear how this problem can affect real-time
applications and KVM-RT. However, for real-time and
high-performance the best thing is for a timer to always
fire in the CPU where it was created.
Resolves: rhbz#1323283
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Added new tuned-adm functionality 'profile_info'. It has optional parameter
'profile_name'. If called without parameter, active profile is used.
It outputs name of the profile it is querying, profile summary, and profile
description. If there is no profile summary or description available it
outputs empty string(s).
Extended tuned-adm 'list' functionality. It now displays profile summary
in the list (if available).
Added summary to profiles.
Extended D-Bus API to support the new feature and for better Cockpit support:
- Added 'profile_info' method. It gets profile_name argument and it queries
the requested profile for information. If profile_name is empty string it
queries the active/selected profile. It returns tuple of the following
format (status, profile_name, summary, description), where status is
boolean. If it is False, the query mechanism failed and the other fields
don't contain valid data
- Added 'profiles2' method. It's extension of 'profiles' method. It returns
list of tuples. Tuples have following format:
(profile_name, profile_summary)
Related: rhbz#1228356
Fixes: #46
Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
The latest RHEL and RT kernels got support for setting the cpumask of unbound
workqueues in sysfs (https://bugzilla.redhat.com/show_bug.cgi?id=1176155).
This patch sets the unbound workqueues cpumask to the list of non-isolated
cores for the real-time profiles.
Patch from Luiz Capitulino <lcapitulino@redhat.com>
Resolves: rhbz#1259043
Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
