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Date: Mon, 27 Oct 2014 10:16:51 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: LKP <lkp@...ux.intel.com>, Alexander Gordeev <agordeev@...hat.com>
Cc: Tejun Heo <tj@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
lkp@...org, Yuanhan Liu <yuanhan.liu@...ux.intel.com>
Subject: [LKP] [AHCI] 18dcf433f3d: -3.3% fileio.requests_per_sec
FYI, we noticed the below changes on
commit 18dcf433f3ded61eb140a55e7048ec2fef79e723 ("AHCI: Optimize single IRQ interrupt processing")
227dfb4dbf109596 18dcf433f3ded61eb140a55e70 testbox/testcase/testparams
---------------- -------------------------- ---------------------------
%stddev %change %stddev
\ | \
61.60 ± 1% -3.3% 59.56 ± 0% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
61.60 -3.3% 59.56 GEO-MEAN fileio.requests_per_sec
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
436798 ± 28% -73.4% 116066 ± 33% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
436798 -73.4% 116066 GEO-MEAN sched_debug.cpu#2.ttwu_local
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
29791 ± 4% -72.7% 8123 ± 6% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
29791 -72.7% 8123 GEO-MEAN sched_debug.cfs_rq[2]:/.exec_clock
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
26505 ± 3% -71.1% 7657 ± 6% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
26505 -71.1% 7657 GEO-MEAN sched_debug.cfs_rq[3]:/.exec_clock
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
211746 ± 47% +122.7% 471499 ± 23% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
211746 +122.7% 471499 GEO-MEAN sched_debug.cpu#3.ttwu_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
25 ± 38% +206.3% 77 ± 12% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
25 +206.3% 77 GEO-MEAN sched_debug.cfs_rq[0]:/.tg_runnable_contrib
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
395023 ± 21% +179.3% 1103475 ± 9% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
395023 +179.3% 1103475 GEO-MEAN sched_debug.cpu#0.sched_goidle
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
26678 ± 6% +185.9% 76281 ± 0% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
26678 +185.9% 76281 GEO-MEAN sched_debug.cfs_rq[0]:/.exec_clock
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
206903 ± 45% +105.1% 424444 ± 26% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
206903 +105.1% 424444 GEO-MEAN sched_debug.cpu#3.sched_goidle
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
814594 ± 21% +173.2% 2225796 ± 9% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
814594 +173.2% 2225795 GEO-MEAN sched_debug.cpu#0.nr_switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
815199 ± 21% +173.2% 2227078 ± 9% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
815198 +173.2% 2227078 GEO-MEAN sched_debug.cpu#0.sched_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1213 ± 36% +195.3% 3583 ± 12% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
1213 +195.3% 3583 GEO-MEAN sched_debug.cfs_rq[0]:/.avg->runnable_avg_sum
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
29624 ± 6% +176.5% 81923 ± 1% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
29624 +176.5% 81923 GEO-MEAN sched_debug.cfs_rq[0]:/.min_vruntime
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
193739 ± 46% +99.9% 387345 ± 15% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
193739 +99.9% 387345 GEO-MEAN sched_debug.cpu#1.sched_goidle
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
482611 ± 24% -60.5% 190666 ± 19% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
482611 -60.5% 190666 GEO-MEAN sched_debug.cpu#2.sched_goidle
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
31073 ± 4% -63.6% 11312 ± 2% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
31073 -63.6% 11312 GEO-MEAN sched_debug.cfs_rq[3]:/.min_vruntime
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
12 ± 33% -68.3% 4 ± 27% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
12 -68.3% 4 GEO-MEAN sched_debug.cpu#3.cpu_load[4]
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
440281 ± 42% +97.4% 869268 ± 25% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
440281 +97.4% 869268 GEO-MEAN sched_debug.cpu#3.nr_switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
440898 ± 42% +97.2% 869665 ± 25% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
440898 +97.2% 869665 GEO-MEAN sched_debug.cpu#3.sched_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
33967 ± 4% -63.3% 12450 ± 3% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
33967 -63.3% 12450 GEO-MEAN sched_debug.cfs_rq[2]:/.min_vruntime
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
413955 ± 43% +93.7% 801767 ± 14% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
413955 +93.7% 801767 GEO-MEAN sched_debug.cpu#1.nr_switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
414509 ± 43% +93.5% 802162 ± 14% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
414509 +93.5% 802162 GEO-MEAN sched_debug.cpu#1.sched_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
991210 ± 24% -57.1% 425186 ± 17% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
991210 -57.1% 425186 GEO-MEAN sched_debug.cpu#2.nr_switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
991832 ± 24% -57.1% 425587 ± 17% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
991831 -57.1% 425587 GEO-MEAN sched_debug.cpu#2.sched_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
437 ± 14% -59.6% 176 ± 27% bay/dd-write/performance-1HDD-cfq-xfs-10dd
539 ± 7% -50.6% 266 ± 7% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
485 -55.3% 217 GEO-MEAN slabinfo.xfs_buf.active_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
446 ± 14% -57.7% 188 ± 30% bay/dd-write/performance-1HDD-cfq-xfs-10dd
548 ± 6% -43.9% 307 ± 4% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
494 -51.3% 240 GEO-MEAN slabinfo.xfs_buf.num_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
216837 ± 39% +85.6% 402550 ± 14% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
216837 +85.6% 402550 GEO-MEAN sched_debug.cpu#1.ttwu_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
496141 ± 24% +117.8% 1080683 ± 2% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
496141 +117.8% 1080683 GEO-MEAN sched_debug.cpu#2.ttwu_count
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
23697 ± 7% -51.9% 11404 ± 2% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
23697 -51.9% 11404 GEO-MEAN sched_debug.cfs_rq[1]:/.min_vruntime
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
88762 ± 5% +94.9% 173015 ± 2% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
88762 +94.9% 173015 GEO-MEAN sched_debug.cpu#0.nr_load_updates
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
21233 ± 8% -49.3% 10767 ± 5% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
21233 -49.3% 10767 GEO-MEAN sched_debug.cfs_rq[1]:/.exec_clock
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
14 ± 29% -51.4% 7 ± 15% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
14 -51.4% 6 GEO-MEAN sched_debug.cpu#3.cpu_load[3]
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
44 ± 13% -45.2% 24 ± 7% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
44 -45.2% 24 GEO-MEAN sched_debug.cfs_rq[3]:/.tg_runnable_contrib
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
5.00 ± 16% -31.1% 3.45 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
5.00 -31.1% 3.45 GEO-MEAN perf-profile.cpu-cycles.__writeback_inodes_wb.wb_writeback.bdi_writeback_workfn.process_one_work.worker_thread
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
5.00 ± 16% -31.6% 3.42 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
5.00 -31.6% 3.42 GEO-MEAN perf-profile.cpu-cycles.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.bdi_writeback_workfn.process_one_work
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.99 ± 16% -31.6% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.99 -31.6% 3.41 GEO-MEAN perf-profile.cpu-cycles.write_cache_pages.generic_writepages.xfs_vm_writepages.do_writepages.__writeback_single_inode
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.99 ± 16% -31.6% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.99 -31.6% 3.41 GEO-MEAN perf-profile.cpu-cycles.xfs_vm_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
5.00 ± 16% -31.1% 3.45 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
5.00 -31.1% 3.45 GEO-MEAN perf-profile.cpu-cycles.wb_writeback.bdi_writeback_workfn.process_one_work.worker_thread.kthread
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.99 ± 16% -31.6% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.99 -31.6% 3.41 GEO-MEAN perf-profile.cpu-cycles.do_writepages.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.98 ± 16% -31.4% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.98 -31.4% 3.41 GEO-MEAN perf-profile.cpu-cycles.__writepage.write_cache_pages.generic_writepages.xfs_vm_writepages.do_writepages
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
5.00 ± 16% -31.7% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
5.00 -31.7% 3.41 GEO-MEAN perf-profile.cpu-cycles.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.bdi_writeback_workfn
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.98 ± 16% -31.4% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.98 -31.4% 3.41 GEO-MEAN perf-profile.cpu-cycles.xfs_vm_writepage.__writepage.write_cache_pages.generic_writepages.xfs_vm_writepages
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.99 ± 16% -31.6% 3.41 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.99 -31.6% 3.41 GEO-MEAN perf-profile.cpu-cycles.generic_writepages.xfs_vm_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
5.00 ± 16% -31.1% 3.45 ± 28% bay/dd-write/performance-1HDD-cfq-xfs-10dd
5.00 -31.1% 3.45 GEO-MEAN perf-profile.cpu-cycles.bdi_writeback_workfn.process_one_work.worker_thread.kthread.ret_from_fork
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4.02 ± 17% -37.3% 2.52 ± 32% bay/dd-write/performance-1HDD-cfq-xfs-10dd
4.02 -37.3% 2.52 GEO-MEAN perf-profile.cpu-cycles.xfs_cluster_write.xfs_vm_writepage.__writepage.write_cache_pages.generic_writepages
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
2071 ± 12% -43.9% 1162 ± 6% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
2071 -43.9% 1162 GEO-MEAN sched_debug.cfs_rq[3]:/.avg->runnable_avg_sum
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
13 ± 48% -42.6% 7 ± 18% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
13 -42.6% 7 GEO-MEAN sched_debug.cpu#2.cpu_load[3]
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
3.20 ± 19% -37.6% 1.99 ± 25% bay/dd-write/performance-1HDD-cfq-xfs-10dd
3.20 -37.6% 1.99 GEO-MEAN perf-profile.cpu-cycles.xfs_convert_page.isra.11.xfs_cluster_write.xfs_vm_writepage.__writepage.write_cache_pages
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
9 ± 16% -43.7% 5 ± 49% bay/dd-write/performance-1HDD-cfq-xfs-10dd
9 -43.8% 5 GEO-MEAN sched_debug.cfs_rq[0]:/.runnable_load_avg
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
627 ± 12% +55.9% 978 ± 8% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
627 +55.9% 978 GEO-MEAN slabinfo.btrfs_delayed_tree_ref.num_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
627 ± 12% +54.9% 972 ± 8% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
627 +54.9% 972 GEO-MEAN slabinfo.btrfs_delayed_tree_ref.active_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
2552 ± 8% -35.9% 1635 ± 10% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
2552 -35.9% 1635 GEO-MEAN slabinfo.kmalloc-96.active_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
2577 ± 7% -35.0% 1676 ± 9% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
2577 -35.0% 1676 GEO-MEAN slabinfo.kmalloc-96.num_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
650 ± 5% -29.7% 457 ± 7% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
649 -29.7% 457 GEO-MEAN slabinfo.blkdev_requests.active_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.17 ± 13% +24.6% 1.46 ± 8% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.17 +24.6% 1.46 GEO-MEAN perf-profile.cpu-cycles.try_to_release_page.shrink_page_list.shrink_inactive_list.shrink_lruvec.shrink_zone
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
664 ± 4% -26.8% 486 ± 7% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
664 -26.8% 486 GEO-MEAN slabinfo.blkdev_requests.num_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.40 ± 4% -23.4% 1.07 ± 9% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.40 -23.4% 1.07 GEO-MEAN perf-profile.cpu-cycles.default_idle.arch_cpu_idle.cpu_startup_entry.rest_init.start_kernel
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.40 ± 4% -22.8% 1.08 ± 10% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.40 -22.8% 1.08 GEO-MEAN perf-profile.cpu-cycles.arch_cpu_idle.cpu_startup_entry.rest_init.start_kernel.x86_64_start_reservations
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
100710 ± 5% +28.7% 129619 ± 0% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
100710 +28.7% 129619 GEO-MEAN sched_debug.cpu#2.nr_load_updates
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
2671 ± 10% +19.1% 3181 ± 6% bay/dd-write/performance-1HDD-cfq-xfs-10dd
2671 +19.1% 3181 GEO-MEAN slabinfo.anon_vma.num_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
86107 ± 5% -21.2% 67836 ± 8% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
86107 -21.2% 67835 GEO-MEAN sched_debug.cpu#3.nr_load_updates
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.57 ± 5% -15.2% 1.33 ± 9% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.57 -15.2% 1.33 GEO-MEAN perf-profile.cpu-cycles.rest_init.start_kernel.x86_64_start_reservations.x86_64_start_kernel
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.56 ± 5% -14.5% 1.33 ± 9% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.56 -14.5% 1.33 GEO-MEAN perf-profile.cpu-cycles.cpu_startup_entry.rest_init.start_kernel.x86_64_start_reservations.x86_64_start_kernel
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.57 ± 5% -15.2% 1.33 ± 9% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.57 -15.2% 1.33 GEO-MEAN perf-profile.cpu-cycles.x86_64_start_reservations.x86_64_start_kernel
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.57 ± 5% -15.2% 1.33 ± 9% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.57 -15.2% 1.33 GEO-MEAN perf-profile.cpu-cycles.x86_64_start_kernel
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1.57 ± 5% -15.2% 1.33 ± 9% bay/dd-write/performance-1HDD-cfq-xfs-10dd
1.57 -15.2% 1.33 GEO-MEAN perf-profile.cpu-cycles.start_kernel.x86_64_start_reservations.x86_64_start_kernel
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
50 ± 32% -34.0% 33 ± 5% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
49 -34.0% 33 GEO-MEAN sched_debug.cfs_rq[2]:/.tg_runnable_contrib
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
815734 ± 1% -16.3% 682841 ± 2% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
815734 -16.3% 682841 GEO-MEAN sched_debug.cpu#0.avg_idle
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
2341 ± 31% -33.3% 1560 ± 4% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
2340 -33.3% 1560 GEO-MEAN sched_debug.cfs_rq[2]:/.avg->runnable_avg_sum
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
77032 ± 7% -15.7% 64945 ± 4% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
77032 -15.7% 64945 GEO-MEAN sched_debug.cpu#1.nr_load_updates
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
718 ± 5% +18.6% 852 ± 3% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
718 +18.6% 852 GEO-MEAN slabinfo.btrfs_trans_handle.active_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
723 ± 5% +18.8% 859 ± 3% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
723 +18.8% 859 GEO-MEAN slabinfo.btrfs_trans_handle.num_objs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4889 ± 5% -13.4% 4233 ± 5% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
4889 -13.4% 4233 GEO-MEAN sched_debug.cpu#3.curr->pid
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
4606 ± 2% +14.4% 5268 ± 3% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
4606 +14.4% 5268 GEO-MEAN sched_debug.cpu#2.curr->pid
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
63213 ± 0% +13.2% 71544 ± 0% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
63213 +13.2% 71544 GEO-MEAN softirqs.SCHED
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
166 ± 4% +10.1% 183 ± 4% bay/dd-write/performance-1HDD-cfq-xfs-10dd
166 +10.1% 183 GEO-MEAN uptime.idle
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
418402 ± 6% +250.9% 1468345 ± 0% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
418402 +250.9% 1468345 GEO-MEAN time.voluntary_context_switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
1434 ± 0% +56.3% 2241 ± 1% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
1433 +56.3% 2241 GEO-MEAN vmstat.system.in
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
5144 ± 0% +6.8% 5493 ± 0% bay/dd-write/performance-1HDD-cfq-xfs-10dd
2610 ± 0% +65.1% 4310 ± 1% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
3664 +32.8% 4865 GEO-MEAN vmstat.system.cs
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
10375 ± 3% -7.7% 9576 ± 3% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
10374 -7.7% 9576 GEO-MEAN time.involuntary_context_switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
3210548 ± 0% +6.7% 3426526 ± 0% bay/dd-write/performance-1HDD-cfq-xfs-10dd
3210548 +6.7% 3426526 GEO-MEAN perf-stat.context-switches
227dfb4dbf109596 18dcf433f3ded61eb140a55e70
---------------- --------------------------
706310 ± 1% -3.2% 683678 ± 0% bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
706310 -3.2% 683678 GEO-MEAN time.file_system_inputs
bay: Pentium D
Memory: 2G
time.voluntary_context_switches
1.6e+06 ++----------------------------------------------------------------+
| O O O O O O O O O OO O O O O |
1.4e+06 O+O O OO O |
| |
1.2e+06 ++ |
| |
1e+06 ++ |
| |
800000 ++ |
| |
600000 ++ |
| .*. |
400000 *+*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.*.*.**.*.*.* **.*.*
| |
200000 ++----------------------------------------------------------------+
softirqs.SCHED
78000 ++------------------------------------------------------------------+
| O |
76000 ++ O |
74000 ++ |
| O O O O O O * |
72000 ++O O O O O O O O O O O |
70000 O+ O :: |
| : : |
68000 ++ : : |
66000 ++ : : |
| : : |
64000 *+ : :.*.**. .*.*. *.*. .*.|
62000 ++ *.*.* .*.*.*. .*.*.*. *. .*.* * *.*.*.* *.* * *
|: + * * * *.* |
60000 ++*-----------------------------------------------------------------+
vmstat.system.in
2600 ++-------------------------------------------------------------------+
2400 ++ O |
| O O O O O O O O O O |
2200 O+O O O O O O O OO |
2000 ++ |
| |
1800 ++ |
1600 ++ |
1400 *+ *.*.*.*.**.*.*.*.*.*.*.*.*.*.*.**.*.*.*.*.*.*.*.*.*.*.**.*.*.*.*.*
| : |
1200 ++ : |
1000 ++ : |
| : |
800 ++* |
600 ++-------------------------------------------------------------------+
vmstat.system.cs
5000 ++-------------------------------------------------------------------+
| |
4500 ++ O O O OO O O O O O OO O |
4000 O+O O O O O O O |
| |
3500 ++ |
| |
3000 ++ |
| *.*.*. .*. .*.*.*.*.*. .*. *.*.*.*. .*. .*.*.*.*.**.*.*.*.*.*
2500 *+ : *.** * * *.* * * |
2000 ++ : |
|: : |
1500 ++: |
| * |
1000 ++-------------------------------------------------------------------+
sched_debug.cfs_rq[3]:/.exec_clock
35000 ++------------------------------------------------------------------+
| |
30000 ++ * |
| .* .*.* *. .* : + .*. *.*.*. .* .* |
|.*.*.* :.* + + * *. : * *.* * *.* + .*.**.* + .*
25000 *+ * *.* * + + * * |
| * |
20000 ++ |
| |
15000 ++ |
O O O |
| O |
10000 ++ O O O O O O |
| O OO O O O O O O O O |
5000 ++------------------------------------------------------------------+
sched_debug.cfs_rq[3]:/.min_vruntime
40000 ++------------------------------------------------------------------+
| * |
35000 ++ :: * |
| .*.* .* : : .*. :+ .* |
| .* * + .*.* *. : : *.* * *.*. .* + .*.**.*.*. .*
30000 ++*.*.* :+ *.* * *. + * * * |
* * * |
25000 ++ |
| |
20000 ++ |
| |
O |
15000 ++O O O O |
| O O O O O OO O O O O |
10000 ++----O-OO--------------------------O-O-----------------------------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
apt-get install ruby ruby-oj
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/setup-local job.yaml # the job file attached in this email
bin/run-local 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,
Fengguang
View attachment "job.yaml" of type "text/plain" (1768 bytes)
View attachment "reproduce" of type "text/plain" (694 bytes)
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