[ebiggers:wip-x86-aes-xts-integrated-tweak-encryption] [crypto] 0ecd756ee5: stress-ng.sigsuspend.ops_per_sec 12.7% improvement

[ebiggers:wip-x86-aes-xts-integrated-tweak-encryption] [crypto] 0ecd756ee5: stress-ng.sigsuspend.ops_per_sec 12.7% improvement

[kernel test robot]

Hello,

kernel test robot noticed a 12.7% improvement of stress-ng.sigsuspend.ops_per_sec on:


commit: 0ecd756ee5f1ebf3585e1190ad28f8da9240521e ("crypto: x86/aes-ecb - Remove superseded ECB skcipher") https://git.kernel.org/cgit/linux/kernel/git/ebiggers/linux.git wip-x86-aes-xts-integrated-tweak-encryption

testcase: stress-ng
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480CTDX (Sapphire Rapids) with 256G memory
parameters:

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


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


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261012/202610120947.84603e5f-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-spr-r02/sigsuspend/stress-ng/60s

commit: 
  2f3f90b00a ("crypto: x86/aes - Drop superseded 32-bit build support")
  0ecd756ee5 ("crypto: x86/aes-ecb - Remove superseded ECB skcipher")

2f3f90b00a6604a3 0ecd756ee5f1ebf3585e1190ad2
---------------- --------------------------- 
         %stddev     %change         %stddev
             \          |                \  
 3.371e+08           +12.8%  3.802e+08        stress-ng.sigsuspend.ops
   5629384           +12.7%    6343927        stress-ng.sigsuspend.ops_per_sec
 2.719e+08           +12.9%   3.07e+08        stress-ng.time.involuntary_context_switches
 3.371e+08           +12.8%  3.801e+08        stress-ng.time.voluntary_context_switches


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