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=?us-ascii?Q?Lg=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 918fcdf9-3320-4f5d-df81-08dcfd6fbb9e X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Nov 2024 07:59:11.4083 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: pEYepGsf4+yngvEqEa2zKuMaXAAWY+hozC27Ddb9obhRhQE4/fHKraZtJ/yVTwgzLybxvFdQwlV7f+OWHr9gOg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR11MB6429 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 3.1% improvement of will-it-scale.per_process_ops on: commit: 0fc810ae3ae110f9e2fcccce80fc8c8d62f97907 ("x86/uaccess: Avoid barrier_nospec() in 64-bit copy_from_user()") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master testcase: will-it-scale config: x86_64-rhel-8.3 compiler: gcc-12 test machine: 256 threads 2 sockets GENUINE INTEL(R) XEON(R) (Sierra Forest) with 128G memory parameters: nr_task: 100% mode: process test: eventfd1 cpufreq_governor: performance Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20241105/202411051526.913796e-oliver.sang@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase: gcc-12/performance/x86_64-rhel-8.3/process/100%/debian-12-x86_64-20240206.cgz/lkp-srf-2sp1/eventfd1/will-it-scale commit: 14b7d43c5c ("Merge tag 'perf-tools-fixes-for-v6.12-2-2024-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools") 0fc810ae3a ("x86/uaccess: Avoid barrier_nospec() in 64-bit copy_from_user()") 14b7d43c5c068cb9 0fc810ae3ae110f9e2fcccce80f ---------------- --------------------------- %stddev %change %stddev \ | \ 6.721e+08 +3.1% 6.929e+08 will-it-scale.256.processes 2625451 +3.1% 2706555 will-it-scale.per_process_ops 6.721e+08 +3.1% 6.929e+08 will-it-scale.workload 1.603e+11 +2.3% 1.64e+11 perf-stat.i.branch-instructions 0.81 -2.6% 0.79 perf-stat.i.cpi 8.18e+11 +2.6% 8.392e+11 perf-stat.i.instructions 1.24 +2.6% 1.27 perf-stat.i.ipc 0.81 -2.4% 0.79 perf-stat.overall.cpi 1.24 +2.5% 1.27 perf-stat.overall.ipc 1.597e+11 +2.3% 1.634e+11 perf-stat.ps.branch-instructions 8.152e+11 +2.6% 8.364e+11 perf-stat.ps.instructions 2.484e+14 +2.5% 2.545e+14 perf-stat.total.instructions 10.11 -2.6 7.50 perf-profile.calltrace.cycles-pp._copy_from_user.eventfd_write.vfs_write.ksys_write.do_syscall_64 13.86 -2.6 11.31 perf-profile.calltrace.cycles-pp.eventfd_write.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 16.80 -2.5 14.30 perf-profile.calltrace.cycles-pp.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 19.08 -2.4 16.64 perf-profile.calltrace.cycles-pp.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 21.97 -2.4 19.58 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 23.21 -2.4 20.86 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.write 52.90 -1.5 51.43 perf-profile.calltrace.cycles-pp.write 0.82 +0.0 0.83 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 0.60 +0.0 0.62 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_safe_stack.read 1.46 +0.0 1.49 perf-profile.calltrace.cycles-pp.rw_verify_area.vfs_write.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.08 +0.0 1.10 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 1.30 +0.0 1.32 perf-profile.calltrace.cycles-pp.testcase 0.60 +0.0 0.63 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_safe_stack.write 1.12 +0.0 1.16 perf-profile.calltrace.cycles-pp.read@plt 1.62 +0.0 1.66 perf-profile.calltrace.cycles-pp.fdget_pos.ksys_write.do_syscall_64.entry_SYSCALL_64_after_hwframe.write 2.18 +0.0 2.23 perf-profile.calltrace.cycles-pp.entry_SYSRETQ_unsafe_stack.read 1.06 +0.1 1.11 perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 2.18 +0.1 2.24 perf-profile.calltrace.cycles-pp.entry_SYSRETQ_unsafe_stack.write 2.39 +0.1 2.44 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.eventfd_write.vfs_write.ksys_write.do_syscall_64 1.61 +0.1 1.68 perf-profile.calltrace.cycles-pp.fdget_pos.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 1.72 +0.1 1.80 perf-profile.calltrace.cycles-pp.rw_verify_area.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 2.22 +0.1 2.31 perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.eventfd_read.vfs_read.ksys_read.do_syscall_64 9.44 +0.3 9.78 perf-profile.calltrace.cycles-pp._copy_to_iter.eventfd_read.vfs_read.ksys_read.do_syscall_64 16.77 +0.4 17.18 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.read 13.14 +0.5 13.62 perf-profile.calltrace.cycles-pp.eventfd_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 17.00 +0.6 17.61 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64.write 21.07 +0.8 21.87 perf-profile.calltrace.cycles-pp.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 23.41 +0.9 24.32 perf-profile.calltrace.cycles-pp.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 26.39 +1.0 27.40 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.read 27.66 +1.1 28.72 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.read 57.88 +1.7 59.63 perf-profile.calltrace.cycles-pp.read 10.46 -2.6 7.86 perf-profile.children.cycles-pp._copy_from_user 14.06 -2.5 11.52 perf-profile.children.cycles-pp.eventfd_write 17.01 -2.5 14.50 perf-profile.children.cycles-pp.vfs_write 19.30 -2.4 16.86 perf-profile.children.cycles-pp.ksys_write 52.62 -1.5 51.12 perf-profile.children.cycles-pp.write 48.64 -1.4 47.27 perf-profile.children.cycles-pp.do_syscall_64 51.11 -1.3 49.81 perf-profile.children.cycles-pp.entry_SYSCALL_64_after_hwframe 0.60 +0.0 0.61 perf-profile.children.cycles-pp.read@plt 2.39 +0.0 2.43 perf-profile.children.cycles-pp.syscall_return_via_sysret 2.05 +0.0 2.09 perf-profile.children.cycles-pp.testcase 2.25 +0.0 2.30 perf-profile.children.cycles-pp.security_file_permission 1.53 +0.1 1.58 perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 2.19 +0.1 2.27 perf-profile.children.cycles-pp.x64_sys_call 3.24 +0.1 3.34 perf-profile.children.cycles-pp.rw_verify_area 3.24 +0.1 3.36 perf-profile.children.cycles-pp.fdget_pos 4.66 +0.2 4.81 perf-profile.children.cycles-pp._raw_spin_lock_irq 9.46 +0.3 9.80 perf-profile.children.cycles-pp._copy_to_iter 17.59 +0.4 18.00 perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 13.24 +0.5 13.72 perf-profile.children.cycles-pp.eventfd_read 22.10 +0.7 22.78 perf-profile.children.cycles-pp.entry_SYSCALL_64 21.12 +0.8 21.93 perf-profile.children.cycles-pp.vfs_read 23.44 +0.9 24.35 perf-profile.children.cycles-pp.ksys_read 57.52 +1.8 59.32 perf-profile.children.cycles-pp.read 10.38 -2.6 7.80 perf-profile.self.cycles-pp._copy_from_user 0.66 +0.0 0.67 perf-profile.self.cycles-pp.ksys_write 0.45 +0.0 0.47 perf-profile.self.cycles-pp.security_file_permission 0.71 +0.0 0.73 perf-profile.self.cycles-pp.ksys_read 1.08 +0.0 1.10 perf-profile.self.cycles-pp.syscall_exit_to_user_mode 1.43 +0.0 1.46 perf-profile.self.cycles-pp.testcase 2.39 +0.0 2.43 perf-profile.self.cycles-pp.syscall_return_via_sysret 1.55 +0.0 1.59 perf-profile.self.cycles-pp.eventfd_read 0.96 +0.1 1.01 perf-profile.self.cycles-pp.rw_verify_area 1.48 +0.1 1.54 perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 1.85 +0.1 1.91 perf-profile.self.cycles-pp.do_syscall_64 2.16 +0.1 2.23 perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe 2.13 +0.1 2.20 perf-profile.self.cycles-pp.x64_sys_call 3.22 +0.1 3.34 perf-profile.self.cycles-pp.fdget_pos 4.48 +0.1 4.62 perf-profile.self.cycles-pp._raw_spin_lock_irq 7.71 +0.2 7.90 perf-profile.self.cycles-pp.write 7.94 +0.2 8.18 perf-profile.self.cycles-pp.read 6.12 +0.3 6.38 perf-profile.self.cycles-pp.vfs_read 9.38 +0.3 9.72 perf-profile.self.cycles-pp._copy_to_iter 10.36 +0.4 10.72 perf-profile.self.cycles-pp.entry_SYSCALL_64 17.54 +0.4 17.95 perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 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