From: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
To: fenghua.yu@intel.com, shuah@kernel.org, reinette.chatre@intel.com
Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
ilpo.jarvinen@linux.intel.com, tony.luck@intel.com
Subject: [PATCH v2 0/2] selftests/resctrl: SNC kernel support discovery
Date: Wed, 15 May 2024 13:17:39 +0200 [thread overview]
Message-ID: <cover.1715769576.git.maciej.wieczor-retman@intel.com> (raw)
Changes v2:
- Removed patches 2 and 3 since now this part will be supported by the
kernel.
Sub-Numa Clustering (SNC) allows splitting CPU cores, caches and memory
into multiple NUMA nodes. When enabled, NUMA-aware applications can
achieve better performance on bigger server platforms.
SNC support in the kernel is currently in review [1]. With SNC enabled
and kernel support in place all the tests will function normally. There
might be a problem when SNC is enabled but the system is still using an
older kernel version without SNC support. Currently the only message
displayed in that situation is a guess that SNC might be enabled and is
causing issues. That message also is displayed whenever the test fails
on an Intel platform.
Add a mechanism to discover kernel support for SNC which will add more
meaning and certainty to the error message.
Series was tested on Ice Lake server platforms with SNC disabled, SNC-2
and SNC-4. The tests were also ran with and without kernel support for
SNC.
Series applies cleanly on kselftest/next.
[1] https://lore.kernel.org/all/20240503203325.21512-1-tony.luck@intel.com/
Previous versions of this series:
[v1] https://lore.kernel.org/all/cover.1709721159.git.maciej.wieczor-retman@intel.com/
Maciej Wieczor-Retman (2):
selftests/resctrl: Adjust effective L3 cache size with SNC enabled
selftests/resctrl: Adjust SNC support messages
tools/testing/selftests/resctrl/cat_test.c | 2 +-
tools/testing/selftests/resctrl/cmt_test.c | 6 +-
tools/testing/selftests/resctrl/mba_test.c | 2 +
tools/testing/selftests/resctrl/mbm_test.c | 4 +-
tools/testing/selftests/resctrl/resctrl.h | 8 +-
tools/testing/selftests/resctrl/resctrlfs.c | 131 +++++++++++++++++++-
6 files changed, 144 insertions(+), 9 deletions(-)
--
2.45.0
next reply other threads:[~2024-05-15 11:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-15 11:17 Maciej Wieczor-Retman [this message]
2024-05-15 11:18 ` [PATCH v2 1/2] selftests/resctrl: Adjust effective L3 cache size with SNC enabled Maciej Wieczor-Retman
2024-05-15 16:48 ` Luck, Tony
2024-05-16 6:01 ` Maciej Wieczor-Retman
2024-05-15 11:18 ` [PATCH v2 2/2] selftests/resctrl: Adjust SNC support messages Maciej Wieczor-Retman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1715769576.git.maciej.wieczor-retman@intel.com \
--to=maciej.wieczor-retman@intel.com \
--cc=fenghua.yu@intel.com \
--cc=ilpo.jarvinen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=reinette.chatre@intel.com \
--cc=shuah@kernel.org \
--cc=tony.luck@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).