12:22 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: 5d2ba5b29383235474e96d935f42c0f274e9ed2d ("mm: convert try_to_unmap_one() to
use page_vma_mapped_walk()")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: vm-scalability
on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 8G memory
with following parameters:
runtime: 300s
test: mmap-pread-seq
cpufreq_governor: performance
test-description: The motivation behind this suite is to exercise functions and regions of
the mm/ of the Linux kernel which are of interest to us.
test-url: https://git.kernel.org/cgit/linux/kernel/git/wfg/vm-scalability.git/
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:
vm-scalability/300s-mmap-pread-seq-performance/lkp-ivb-d02
f24c18f12cc1a1f9 5d2ba5b29383235474e96d935f
---------------- --------------------------
%stddev change %stddev
\ | \
18513661 18062721 vm-scalability.time.minor_page_faults
6559 ± 75% 1e+04 21091 ± 62%
latency_stats.sum.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath
0.04 ± 3% 6% 0.04 perf-stat.branch-miss-rate%
5.663e+08 ± 3% 5% 5.957e+08 perf-stat.branch-misses
3.146e+11 3.204e+11 perf-stat.dTLB-stores
65.99 64.66 perf-stat.cache-miss-rate%
9.019e+09 8.831e+09 perf-stat.cache-references
18795518 18346133 perf-stat.minor-faults
18796083 18346680 perf-stat.page-faults
5.952e+09 -4% 5.71e+09 perf-stat.cache-misses
14369137 ± 6% -9% 13024713 ± 7% perf-stat.iTLB-loads
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