On 2016/4/7 9:06, kernel test robot wrote: > FYI, we noticed that will-it-scale.scalability -4.0% regression on > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > commit 6f25a14a7053b69917e2ebea0d31dd444cd31fd5 ("mm: fix invalid node in > alloc_migrate_target()") >
alloc_migrate_target() is called from cma or mem-offline. I have no idea what's the relation between these, any ideas? Thanks, Xishi Qiu > > ========================================================================================= > compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase: > > gcc-4.9/performance/x86_64-rhel/debian-x86_64-2015-02-07.cgz/lkp-ivb-d03/pthread_mutex1/will-it-scale > > commit: > 969e8d7e47f93ef693028667480558de8f70523f > 6f25a14a7053b69917e2ebea0d31dd444cd31fd5 > > 969e8d7e47f93ef6 6f25a14a7053b69917e2ebea0d > ---------------- -------------------------- > fail:runs %reproduction fail:runs > %stddev %change %stddev > \ | \ > 2.032e+08 ± 0% -1.6% 2e+08 ± 0% will-it-scale.per_process_ops > 0.83 ± 0% -4.0% 0.79 ± 0% will-it-scale.scalability > 214103 ± 14% -20.2% 170884 ± 14% > sched_debug.cpu.ttwu_count.stddev > 3789 ± 7% -10.3% 3398 ± 6% > slabinfo.anon_vma_chain.active_objs > 4660 ± 5% +7.7% 5019 ± 2% vmstat.system.in > > > lkp-ivb-d03: Ivy Bridge > Memory: 4G > > > > 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 > > > 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 Ye
