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YNOMOMrqSHCKzXvorwPLu6gC9O6z8JjD5n0vsiwbxdNnojZINo7eCxiDVzghHXYTlLLB5iJ8H0ZmUzV46W609fjBZtZ/mCOwZ9cZoDCL1CJ/341Vdn7kSApL1PH7+IpCdee3D19zQMJin+P9WhwHKGe8qdnsqXVCnrgC4fOTub+wrijKeB3VJ8IG6S2G754SvU/yPO0aOE2hAmYPF52BtUhtq1YySbb98z9XQr5fGkibm0X2CMYbuWQywlgZlv9vKOqkVrgas80Pgxt/SwuCN/qG0DTXCm+XSXi6O8XHUVCFN8xA4qdNlWlwXnCuBcQiyuOrBBj3pnmcUoD0XWiu2C9oAlwIHi9kYiW+0DudnSNpZQs8XJ8PrUI6+tYAYrxxN+Yc0WI0yxiWY7O7LQd9b/I1IKF1x0S8mXhZEKqT4ucAeOP+09bi3f9JSpHKQu93DUCQaLr9+4A+XCbUxP5w98oZ55Ub0vjDEshqbEvPFoStBPKlfRWVQC67+gwcfN+V02ynrXwpYXF4vQfhzj2ozEZcFhhKx8d5jN+ZEo/O7id5CwZvHMiWNO1M47KRPRoeRo3uCstWRTrZjlTY= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, kernel test robot noticed a -5.0% regression of aim9.brk_test.ops_per_sec on: commit: cacded5e42b9609b07b22d80c10f0076d439f7d1 ("mm: avoid using vma_merge() for new VMAs") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: aim9 test machine: 48 threads 2 sockets Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz (Ivy Bridge-EP) with 64G memory parameters: testtime: 300s test: brk_test cpufreq_governor: performance If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202409301043.629bea78-oliver.sang@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240930/202409301043.629bea78-oliver.sang@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/rootfs/tbox_group/test/testcase/testtime: gcc-12/performance/x86_64-rhel-8.3/debian-12-x86_64-20240206.cgz/lkp-ivb-2ep2/brk_test/aim9/300s commit: fc21959f74 ("mm: abstract vma_expand() to use vma_merge_struct") cacded5e42 ("mm: avoid using vma_merge() for new VMAs") fc21959f74bc1138 cacded5e42b9609b07b22d80c10 ---------------- --------------------------- %stddev %change %stddev \ | \ 1322908 -5.0% 1256536 aim9.brk_test.ops_per_sec 201.54 +2.9% 207.44 aim9.time.system_time 97.58 -6.0% 91.75 aim9.time.user_time 0.04 ± 82% -100.0% 0.00 perf-sched.sch_delay.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.10 ± 60% -100.0% 0.00 perf-sched.sch_delay.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.04 ± 82% -100.0% 0.00 perf-sched.wait_time.avg.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 0.10 ± 60% -100.0% 0.00 perf-sched.wait_time.max.ms.__cond_resched.down_write.do_brk_flags.__do_sys_brk.do_syscall_64 8.33e+08 +3.9% 8.654e+08 perf-stat.i.branch-instructions 1.15 -0.1 1.09 perf-stat.i.branch-miss-rate% 12964626 -1.9% 12711922 perf-stat.i.branch-misses 1.11 -7.4% 1.03 perf-stat.i.cpi 3.943e+09 +6.0% 4.18e+09 perf-stat.i.instructions 0.91 +7.9% 0.98 perf-stat.i.ipc 0.29 ± 2% -9.1% 0.27 ± 4% perf-stat.overall.MPKI 1.56 -0.1 1.47 perf-stat.overall.branch-miss-rate% 1.08 -6.8% 1.01 perf-stat.overall.cpi 0.92 +7.2% 0.99 perf-stat.overall.ipc 8.303e+08 +3.9% 8.627e+08 perf-stat.ps.branch-instructions 12931205 -2.0% 12678170 perf-stat.ps.branch-misses 3.93e+09 +6.0% 4.167e+09 perf-stat.ps.instructions 1.184e+12 +6.1% 1.256e+12 perf-stat.total.instructions 7.16 ± 2% -0.4 6.76 ± 4% perf-profile.calltrace.cycles-pp.entry_SYSRETQ_unsafe_stack.brk 5.72 ± 2% -0.4 5.35 ± 3% perf-profile.calltrace.cycles-pp.perf_event_mmap_event.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64 6.13 ± 2% -0.3 5.84 ± 3% perf-profile.calltrace.cycles-pp.perf_event_mmap.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.83 ± 11% -0.1 0.71 ± 5% perf-profile.calltrace.cycles-pp.__vm_enough_memory.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.00 +0.6 0.58 ± 5% perf-profile.calltrace.cycles-pp.mas_leaf_max_gap.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range 16.73 ± 2% +0.6 17.34 perf-profile.calltrace.cycles-pp.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.7 0.66 ± 6% perf-profile.calltrace.cycles-pp.mas_wr_store_type.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags 24.21 +0.7 24.90 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 23.33 +0.7 24.05 ± 2% perf-profile.calltrace.cycles-pp.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe.brk 0.00 +0.8 0.82 ± 4% perf-profile.calltrace.cycles-pp.vma_complete.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +0.9 0.87 ± 5% perf-profile.calltrace.cycles-pp.mas_update_gap.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags 0.00 +1.1 1.07 ± 9% perf-profile.calltrace.cycles-pp.vma_prepare.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +1.1 1.10 ± 6% perf-profile.calltrace.cycles-pp.mas_preallocate.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +2.3 2.26 ± 5% perf-profile.calltrace.cycles-pp.mas_store_prealloc.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk 0.00 +7.6 7.56 ± 3% perf-profile.calltrace.cycles-pp.vma_expand.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64 0.00 +8.6 8.62 ± 4% perf-profile.calltrace.cycles-pp.vma_merge_new_range.do_brk_flags.__do_sys_brk.do_syscall_64.entry_SYSCALL_64_after_hwframe 7.74 ± 2% -0.4 7.30 ± 4% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 5.81 ± 2% -0.4 5.43 ± 3% perf-profile.children.cycles-pp.perf_event_mmap_event 6.18 ± 2% -0.3 5.88 ± 3% perf-profile.children.cycles-pp.perf_event_mmap 3.93 -0.2 3.73 ± 3% perf-profile.children.cycles-pp.perf_iterate_sb 0.22 ± 29% -0.1 0.08 ± 17% perf-profile.children.cycles-pp.may_expand_vm 0.96 ± 3% -0.1 0.83 ± 4% perf-profile.children.cycles-pp.vma_complete 0.61 ± 14% -0.1 0.52 ± 7% perf-profile.children.cycles-pp.percpu_counter_add_batch 0.15 ± 7% -0.1 0.08 ± 20% perf-profile.children.cycles-pp.brk_test 0.08 ± 11% +0.0 0.12 ± 14% perf-profile.children.cycles-pp.mas_prev_setup 0.17 ± 12% +0.1 0.27 ± 10% perf-profile.children.cycles-pp.mas_wr_store_entry 0.00 +0.2 0.15 ± 11% perf-profile.children.cycles-pp.mas_next_range 0.19 ± 8% +0.2 0.38 ± 10% perf-profile.children.cycles-pp.mas_next_slot 0.34 ± 17% +0.3 0.64 ± 6% perf-profile.children.cycles-pp.mas_prev_slot 23.40 +0.7 24.12 ± 2% perf-profile.children.cycles-pp.__do_sys_brk 0.00 +7.6 7.59 ± 3% perf-profile.children.cycles-pp.vma_expand 0.00 +8.7 8.66 ± 4% perf-profile.children.cycles-pp.vma_merge_new_range 1.61 ± 10% -0.9 0.69 ± 8% perf-profile.self.cycles-pp.do_brk_flags 7.64 ± 2% -0.4 7.20 ± 4% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 0.22 ± 30% -0.1 0.08 ± 17% perf-profile.self.cycles-pp.may_expand_vm 0.57 ± 15% -0.1 0.46 ± 6% perf-profile.self.cycles-pp.percpu_counter_add_batch 0.15 ± 7% -0.1 0.08 ± 20% perf-profile.self.cycles-pp.brk_test 0.20 ± 5% -0.0 0.18 ± 4% perf-profile.self.cycles-pp.anon_vma_interval_tree_insert 0.07 ± 18% +0.0 0.10 ± 18% perf-profile.self.cycles-pp.mas_prev_setup 0.00 +0.1 0.09 ± 12% perf-profile.self.cycles-pp.mas_next_range 0.36 ± 8% +0.1 0.45 ± 6% perf-profile.self.cycles-pp.perf_event_mmap 0.15 ± 13% +0.1 0.25 ± 14% perf-profile.self.cycles-pp.mas_wr_store_entry 0.17 ± 11% +0.2 0.37 ± 11% perf-profile.self.cycles-pp.mas_next_slot 0.34 ± 17% +0.3 0.64 ± 6% perf-profile.self.cycles-pp.mas_prev_slot 0.00 +0.3 0.33 ± 5% perf-profile.self.cycles-pp.vma_merge_new_range 0.00 +0.8 0.81 ± 9% perf-profile.self.cycles-pp.vma_expand 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. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki