starlingx/docs
Code Issues Proposed changes

Updated Examples for Application-isolated cores (r5, r6, dsr6, r7, dsr7, r8, dsr8)

Browse Source 
Closes Bug: 2007586

Signed-off-by: Juanita-Balaraj <juanita.balaraj@windriver.com>
Change-Id: Id0728682dafe03e362fccfade4092752f9613f98
This commit is contained in:
Juanita-Balaraj
2023-02-16 14:49:53 -05:00
parent 3eacb292c5
commit 010575bf19
1 changed files with 18 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
doc/source/admintasks/kubernetes/isolating-cpu-cores-to-enhance-application-performance.rst
View File

@@ -2,9 +2,9 @@
.. bew1572888575258 .. bew1572888575258
.. _isolating-cpu-cores-to-enhance-application-performance: .. _isolating-cpu-cores-to-enhance-application-performance:
======================================================== ====================================================
Isolate the CPU Cores to Enhance Application Performance Isolate CPU Cores to Enhance Application Performance
======================================================== ====================================================
|prod| supports running the most critical low-latency applications on host CPUs |prod| supports running the most critical low-latency applications on host CPUs
which are completely isolated from the host process scheduler. which are completely isolated from the host process scheduler.
@@ -26,6 +26,17 @@ For example:
~(keystone_admin)]$ system host-cpu-modify -f application-isolated -p1 15 worker-1 ~(keystone_admin)]$ system host-cpu-modify -f application-isolated -p1 15 worker-1
~(keystone_admin)]$ system host-unlock worker-1 ~(keystone_admin)]$ system host-unlock worker-1
.. note::
It is possible to explicitly specify 1 or more cores or a range of cores to
be application-isolated:
.. code-block::
~(keystone_admin)]$ system host-cpu-modify -f application-isolated -c 3 controller-0
~(keystone_admin)]$ system host-cpu-modify -f application-isolated -c 3,4 controller-0
~(keystone_admin)]$ system host-cpu-modify -f application-isolated -c 3-5 controller-0
All |SMT| siblings (hyperthreads, if enabled) on a core will have the same All |SMT| siblings (hyperthreads, if enabled) on a core will have the same
assigned function. On host boot, any CPUs designated as isolated will be assigned function. On host boot, any CPUs designated as isolated will be
specified as part of the isolcpus kernel boot argument, which will isolate them specified as part of the isolcpus kernel boot argument, which will isolate them