1:18 p.m.
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: bf77822f12bc442cfbb350b1734dc5be5a1f0178 ("genirq: latency fuzzer option for
device testing")
https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git vsp1/pa-phases
in testcase: will-it-scale
on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory
with following parameters:
test: pread2
cpufreq_governor: performance
test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel
copies to see if the testcase will scale. It builds both a process and threads based test
in order to see any differences between the two.
test-url: https://github.com/antonblanchard/will-it-scale
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: will-it-scale/pread2-performance/lkp-hsw-ep4
e642684c8f9dd4d4 bf77822f12bc442cfbb350b173
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
1:4 -25% :4
kmsg.DHCP/BOOTP:Reply_not_for_us_on_eth#,op[#]xid[fd#]
%stddev change %stddev
\ | \
8.918e+08 8% 9.664e+08 perf-stat.dTLB-load-misses
2.896e+08 4% 3.006e+08 perf-stat.iTLB-load-misses
20.76 4% 21.50 perf-stat.iTLB-load-miss-rate%
11.47 11.37 perf-stat.cache-miss-rate%
2.818e+09 2.777e+09 perf-stat.cache-misses
1.719e+09 1.693e+09 perf-stat.node-load-misses
3.373e+09 3.315e+09 perf-stat.branch-misses
12845 -4% 12312 perf-stat.instructions-per-iTLB-miss
0.06 ± 5% -40% 0.04 ± 7% perf-stat.dTLB-store-miss-rate%
1.931e+08 -42% 1.111e+08 perf-stat.dTLB-store-misses
perf-stat.dTLB-store-misses
2e+08 ++----------------------------------------------------------------+
1.9e+08 *+ *.*. .*. * .*.* * .*.*.*.*.* |
|+ + * *.*.. + + .* + + + .* |
1.8e+08 ++* * * * * |
1.7e+08 ++ |
| |
1.6e+08 ++ |
1.5e+08 ++ |
1.4e+08 ++ |
| |
1.3e+08 ++ O |
1.2e+08 ++O O O O |
O O O O O O O O O O O O O O O O O O O O O O
1.1e+08 ++ O O O O O O |
1e+08 ++----------------------------------------------------------------+
[*] 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