[linux-next:master] [workqueue] a4d1cdc435: stress-ng.stack.ops_per_sec 18.5% improvement

[linux-next:master] [workqueue] a4d1cdc435: stress-ng.stack.ops_per_sec 18.5% improvement

[kernel test robot]

Hello,

kernel test robot noticed a 18.5% improvement of stress-ng.stack.ops_per_sec on:

commit: a4d1cdc4356de4325b0a9c6fb09afa6e121407b5 ("workqueue: Add workqueue_cpu_intensive tracepoint") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 256 threads 2 sockets Intel(R) Xeon(R) 6768P  CPU @ 2.4GHz (Granite Rapids) with 64G memory
parameters:

	nr_threads: 100%
	testtime: 60s
	test: stack
	cpufreq_governor: performance

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


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260916/202609161514.be6a4fae-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-gnr-2sp4/stack/stress-ng/60s

commit: 
  ab85b68e63 ("workqueue: rename the pwq slot helpers shared with percpu")
  a4d1cdc435 ("workqueue: Add workqueue_cpu_intensive tracepoint")

ab85b68e630e8a4d a4d1cdc4356de4325b0a9c6fb09
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
  2.09e+08 ±  2%     +18.4%  2.475e+08        stress-ng.stack.ops
   3493402 ±  2%     +18.5%    4138262        stress-ng.stack.ops_per_sec
     92.39 ±  3%     +17.4%     108.49        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