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Message-Id: <20230911111930.16088-6-ilpo.jarvinen@linux.intel.com>
Date: Mon, 11 Sep 2023 14:19:30 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Reinette Chatre <reinette.chatre@...el.com>,
Shuah Khan <shuah@...nel.org>,
Shuah Khan <skhan@...uxfoundation.org>,
linux-kselftest@...r.kernel.org,
Maciej Wieczór-Retman
<maciej.wieczor-retman@...el.com>
Cc: linux-kernel@...r.kernel.org,
Shaopeng Tan <tan.shaopeng@...fujitsu.com>,
stable@...r.kernel.org,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 5/5] selftests/resctrl: Reduce failures due to outliers in MBA/MBM tests
5% difference upper bound for success is a bit on the low side for the
MBA and MBM tests. Some platforms produce outliers that are slightly
above that, typically 6-7%.
Relaxing the MBA/MBM success bound to 8% removes most of the failures
due those frequent outliers.
Fixes: 06bd03a57f8c ("selftests/resctrl: Fix MBA/MBM results reporting format")
Cc: <stable@...r.kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
tools/testing/selftests/resctrl/mba_test.c | 2 +-
tools/testing/selftests/resctrl/mbm_test.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c
index cf8284dadcb2..d3bf4368341e 100644
--- a/tools/testing/selftests/resctrl/mba_test.c
+++ b/tools/testing/selftests/resctrl/mba_test.c
@@ -12,7 +12,7 @@
#define RESULT_FILE_NAME "result_mba"
#define NUM_OF_RUNS 5
-#define MAX_DIFF_PERCENT 5
+#define MAX_DIFF_PERCENT 8
#define ALLOCATION_MAX 100
#define ALLOCATION_MIN 10
#define ALLOCATION_STEP 10
diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c
index 1ae131a2e246..d3c0d30c676a 100644
--- a/tools/testing/selftests/resctrl/mbm_test.c
+++ b/tools/testing/selftests/resctrl/mbm_test.c
@@ -11,7 +11,7 @@
#include "resctrl.h"
#define RESULT_FILE_NAME "result_mbm"
-#define MAX_DIFF_PERCENT 5
+#define MAX_DIFF_PERCENT 8
#define NUM_OF_RUNS 5
static int
--
2.30.2
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