mirror_ubuntu-kernels/tools
Ilpo Järvinen ef43c30858 selftests/resctrl: Reduce failures due to outliers in MBA/MBM tests
The initial value of 5% chosen for the maximum allowed percentage
difference between resctrl mbm value and IMC mbm value in

commit 06bd03a57f ("selftests/resctrl: Fix MBA/MBM results reporting
       format") was "randomly chosen value" (as admitted by the changelog).

When running tests in our lab across a large number platforms, 5%
difference upper bound for success seems a bit on the low side for the
MBA and MBM tests. Some platforms produce outliers that are slightly
above that, typically 6-7%, which leads MBA/MBM test frequently
failing.

Replace the "randomly chosen value" with a success bound that is based
on those measurements across large number of platforms by relaxing the
MBA/MBM success bound to 8%. The relaxed bound removes the failures due
the frequent outliers.

Fixed commit description style error during merge:
Shuah Khan <skhan@linuxfoundation.org>

Fixes: 06bd03a57f ("selftests/resctrl: Fix MBA/MBM results reporting format")
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2023-10-13 14:54:38 -06:00
..
accounting
arch ARM: 2023-09-07 13:52:20 -07:00
bootconfig
bpf bpftool: Fix build warnings with -Wtype-limits 2023-08-30 08:39:00 +02:00
build perf tools changes for v6.6: 2023-09-09 20:06:17 -07:00
certs
cgroup iocost_monitor: improve it by adding iocg wait_ms 2023-08-08 15:43:03 -06:00
counter tools/counter: Makefile: Replace rmdir by rm to avoid make,clean failure 2023-07-24 10:29:52 -04:00
crypto/ccp crypto: ccp - Add unit tests for dynamic boost control 2023-07-20 22:15:12 +12:00
debugging
edid
firewire
firmware
gpio
hv vmbus_testing: fix wrong python syntax for integer value comparison 2023-07-23 23:19:30 +00:00
iio tools: iio: iio_generic_buffer: Fix some integer type and calculation 2023-07-29 15:59:20 +01:00
include Networking changes for 6.6. 2023-08-29 11:33:01 -07:00
kvm/kvm_stat
laptop
leds
lib perf tools changes for v6.6: 2023-09-09 20:06:17 -07:00
memory-model
mm tools/mm: fix undefined reference to pthread_once 2023-09-05 10:13:45 -07:00
net/ynl tools/net/ynl: Add support for create flags 2023-08-27 17:17:10 -07:00
objtool objtool: Fix _THIS_IP_ detection for cold functions 2023-09-12 08:16:54 +02:00
pci
pcmcia
perf perf tools changes for v6.6: 2023-09-09 20:06:17 -07:00
power More power management updates for 6.6-rc1 2023-09-04 15:21:55 -07:00
rcu
scripts tools build: Add 3-component logical version comparators 2023-08-03 16:59:40 -03:00
spi
testing selftests/resctrl: Reduce failures due to outliers in MBA/MBM tests 2023-10-13 14:54:38 -06:00
thermal
time
tracing rtla/timerlat_hist: Add timerlat user-space support 2023-06-13 16:41:14 -04:00
usb
verification
virtio tools/virtio: fix build break for aarch64 2023-06-27 10:47:08 -04:00
wmi
workqueue workqueue: Implement non-strict affinity scope for unbound workqueues 2023-08-07 15:57:25 -10:00
Makefile