5:12 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: a966ff5e8eb57208523f0eacb8ab46008688b1b2 ("x86/mm: Factor out remote TLB
flushing")
https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git x86/pcid
in testcase: pixz
on test machine: 80 threads Intel(R) Xeon(R) CPU E7- 8870 @ 2.40GHz with 128G memory
with following parameters:
nr_threads: 100%
cpufreq_governor: performance
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: pixz/100%-performance/lkp-wsx02
b760342527f665dc a966ff5e8eb57208523f0eacb8
---------------- --------------------------
%stddev change %stddev
\ | \
1.893e+09 ± 3% 136% 4.466e+09 perf-stat.dTLB-store-misses
0.11 ± 3% 135% 0.26 perf-stat.dTLB-store-miss-rate%
4.303e+08 26% 5.427e+08 perf-stat.iTLB-load-misses
0.00 26% 0.00 perf-stat.iTLB-load-miss-rate%
2.223e+10 11% 2.476e+10 perf-stat.dTLB-load-misses
0.52 11% 0.57 perf-stat.dTLB-load-miss-rate%
33341 -20% 26518 perf-stat.instructions-per-iTLB-miss
201596 ±171% 1e+06 1396125 ±163% latency_stats.avg.max
213975 ±157% 1e+06 1404448 ±162% latency_stats.max.max
perf-stat.dTLB-store-misses
6e+09 ++------------------------------------------------------------------+
| |
5e+09 ++ 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 |
4e+09 ++ |
| |
3e+09 ++ |
| *.*.. *..* |
2e+09 *+ .*. .*.*..* : + + .*..*.|
| *..*.* *..*.* : *.* : *.*.* *.*.* *.* *
| : : : : : : |
1e+09 ++ : : : : : : |
| :: :: : : |
0 ++-----------------------*-O----*------------------------*----------+
perf-stat.dTLB-store-miss-rate_
0.3 ++------------O-----------------O------------------------------------+
O O O O O O O O O O O O |
0.25 ++O O O O O O O O O O O O |
| |
| |
0.2 ++ |
| |
0.15 ++ |
| .*.. .*.. |
0.1 *+*..*.* *.*.* *.* *.* *.*.*.*..*.*.*..*.*.* *.*.*..*.*
| : : : : : : |
| : : : : : : |
0.05 ++ : : : : : : |
| :: :: :: |
0 ++-----------------------*--O---*-------------------------*----------+
[*] 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