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From:   "Shaopeng Tan (Fujitsu)" <tan.shaopeng@fujitsu.com>
To:     'Tony Luck' <tony.luck@intel.com>,
        Fenghua Yu <fenghua.yu@intel.com>,
        Reinette Chatre <reinette.chatre@intel.com>,
        Peter Newman <peternewman@google.com>,
        Jonathan Corbet <corbet@lwn.net>,
        "x86@kernel.org" <x86@kernel.org>
CC:     James Morse <james.morse@arm.com>,
        Jamie Iles <quic_jiles@quicinc.com>,
        Babu Moger <babu.moger@amd.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
        "patches@lists.linux.dev" <patches@lists.linux.dev>
Subject: RE: [PATCH v2 0/7] x86/resctrl: Add support for Sub-NUMA cluster
 (SNC) systems
Thread-Topic: [PATCH v2 0/7] x86/resctrl: Add support for Sub-NUMA cluster
 (SNC) systems
Thread-Index: AQHZpGeATIPi5YBzi0GOCDuOp24i0q+heQwA
Date:   Thu, 29 Jun 2023 08:13:50 +0000
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References: <20230621174006.42533-1-tony.luck@intel.com>
In-Reply-To: <20230621174006.42533-1-tony.luck@intel.com>
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Hi tony,

I ran selftest/resctrl in my environment,
CMT test failed when I enabled Sub-NUMA Cluster.

I don't know why it failed yet,
I paste the test results below.

Processer in my environment:
Intel(R) Xeon(R) Gold 6254 CPU @ 3.10GHz

$ sudo make -C tools/testing/selftests/resctrl run_tests
# # Starting CMT test ...
# # Mounting resctrl to "/sys/fs/resctrl"
# # Mounting resctrl to "/sys/fs/resctrl"
# # Cache size :25952256
# # Benchmark PID: 8638
# # Writing benchmark parameters to resctrl FS
# # Checking for pass/fail
# # Fail: Check cache miss rate within 15%
# # Percent diff=3D21
# # Number of bits: 5
# # Average LLC val: 9216000
# # Cache span (bytes): 11796480
# not ok 3 CMT: test

Best regards,
Shaopeng TAN