Greeting,

There is no primary kpi change in this test, below is the data collected through multiple monitors running background just for your information.


commit: 4a057549d6044c2dea47e80f8369a76225ec9d90 ("alarmtimer: Add tracepoints for alarm timers")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

in testcase: netperf
on test machine: 8 threads Intel(R) Atom(TM) CPU C2750 @ 2.40GHz with 16G memory
with following parameters:

	ip: ipv4
	runtime: 300s
	nr_threads: 200%
	cluster: cs-localhost
	test: TCP_SENDFILE
	cpufreq_governor: performance

test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance.
test-url: http://www.netperf.org/netperf/



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


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml

testcase/path_params/tbox_group/run: netperf/ipv4-300s-200%-cs-localhost-TCP_SENDFILE-performance/lkp-avoton3

2924ecd441f3c12d  4a057549d6044c2dea47e80f83  
----------------  --------------------------  
         %stddev      change         %stddev
             \          |                \  
      0.44              40%       0.62        perf-stat.iTLB-load-miss-rate%
 1.169e+10              39%   1.63e+10        perf-stat.iTLB-load-misses
      2.36               3%       2.43        perf-stat.branch-miss-rate%
  1.11e+10                   1.137e+10        perf-stat.branch-misses
      3.00                        3.06        perf-stat.cache-miss-rate%
 2.292e+11                   2.263e+11        perf-stat.cache-references
       224             -29%        159        perf-stat.instructions-per-iTLB-miss



                       perf-stat.instructions-per-iTLB-miss

  250 ++--------------------------------------------------------------------+
  240 *******.*************.************                                    |
      |                                :                                    |
  230 ++                               :                                    |
  220 ++                                :      ********.*************.*******
      |                                 :    * :                            |
  210 ++                                *.*** *                             |
  200 ++        OOOOOOOOOO             OO                                   |
  190 ++      OO                   OO                                       |
      |                   O OOOOOOO  OO                                     |
  180 ++   OO                                                               |
  170 ++                                                                    |
      OOOOO                                                                 |
  160 ++                                  OOOOOOOOOO                        |
  150 ++--------------------------------------------------------------------+

	[*] bisect-good sample
	[O] bisect-bad  sample


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.


Thanks,
Xiaolong