[harry:b4/sheaf-size-round-up] [mm/slab] 7d63a6c06a: will-it-scale.per_process_ops 54.0% improvement

[harry:b4/sheaf-size-round-up] [mm/slab] 7d63a6c06a: will-it-scale.per_process_ops 54.0% improvement

[kernel test robot]

Hello,

kernel test robot noticed a 54.0% improvement of will-it-scale.per_process_ops on:


commit: 7d63a6c06a85030dc4344dc0884883b115faa64a ("mm/slab: round up sheaf size to kmalloc size for explicit sheaf_capacity")
https://git.kernel.org/cgit/linux/kernel/git/harry/linux.git b4/sheaf-size-round-up

testcase: will-it-scale
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 192 threads 2 sockets Intel(R) Xeon(R) 6740E  CPU @ 2.4GHz (Sierra Forest) with 256G memory
parameters:

	nr_task: 100%
	mode: process
	test: mmap1
	cpufreq_governor: performance


Details are as below:
-------------------------------------------------------------------------------------------------->


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261102/202611021441.984cb0bb-lkp@intel.com

=========================================================================================
compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase:
  gcc-14/performance/x86_64-rhel-9.4/process/100%/debian-13-x86_64-20250902.cgz/lkp-srf-2sp2/mmap1/will-it-scale

commit: 
  6ae424d6ef ("EDITME: cover title for sheaf-size-round-up")
  7d63a6c06a ("mm/slab: round up sheaf size to kmalloc size for explicit sheaf_capacity")

6ae424d6eff8059f 7d63a6c06a85030dc4344dc0884 
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
  38572109           +54.0%   59400688        will-it-scale.192.processes
    200895           +54.0%     309378        will-it-scale.per_process_ops
  38572109           +54.0%   59400688        will-it-scale.workload


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