From: kernel test robot <yi1.lai@intel.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: oe-lkp@lists.linux.dev, lkp@intel.com,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Pedro Falcato <pfalcato@suse.de>,
David Hildenbrand <david@kernel.org>,
Jann Horn <jannh@google.com>,
"Liam R. Howlett" <liam@infradead.org>,
Lorenzo Stoakes <ljs@kernel.org>,
Vlastimil Babka <vbabka@kernel.org>, Zi Yan <ziy@nvidia.com>,
linux-mm@kvack.org, yi1.lai@intel.com
Subject: [linus:master] [mm] 7625cb5673: stress-ng.mincore.ops_per_sec 28.1% improvement
Date: Mon, 19 Oct 2026 09:59:01 +0800 [thread overview]
Message-ID: <202610190930.7aeab52b-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 28.1% improvement of stress-ng.mincore.ops_per_sec on:
commit: 7625cb56733bfd470e9fae69a1b8b78aa8b1d3eb ("mm: mincore: replace __get_free_page() with kmalloc()") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 256 threads 4 sockets INTEL(R) XEON(R) PLATINUM 8592+ (Emerald Rapids) with 256G memory
parameters:
nr_threads: 100%
testtime: 60s
test: mincore
cpufreq_governor: performance
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261019/202610190930.7aeab52b-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime:
gcc-14/performance/x86_64-rhel-9.4/100%/debian-13-x86_64-20250902.cgz/lkp-emr-2sp1/mincore/stress-ng/60s
commit:
006943a9b4 ("mm: mincore: remove special handling for VM_PFNMAP")
7625cb5673 ("mm: mincore: replace __get_free_page() with kmalloc()")
006943a9b437b2d4 7625cb56733bfd470e9fae69a1b
---------------- ---------------------------
%stddev %change %stddev
\ | \
547.22 -25.4% 408.24 stress-ng.mincore.nanosecs_per_mincore_call
27632999 +28.1% 35386493 stress-ng.mincore.ops
460725 +28.1% 590032 stress-ng.mincore.ops_per_sec
1729 +7.1% 1852 stress-ng.time.user_time
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-10-19 1:59 UTC|newest]
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