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Message-ID: <20210214140921.GD6321@xsang-OptiPlex-9020>
Date: Sun, 14 Feb 2021 22:09:21 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Harshad Shirwadkar <harshadshirwadkar@...il.com>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, ying.huang@...el.com, feng.tang@...el.com,
zhengjun.xing@...el.com, linux-ext4@...r.kernel.org, tytso@....edu,
bzzz@...mcloud.com, artem.blagodarenko@...il.com, sihara@....com,
adilger@...ger.ca, Harshad Shirwadkar <harshadshirwadkar@...il.com>
Subject: [ext4] ef4eebad9c:
fxmark.hdd_ext4_no_jnl_MWCL_1_bufferedio.works/sec -9.8% regression
Greeting,
FYI, we noticed a -9.8% regression of fxmark.hdd_ext4_no_jnl_MWCL_1_bufferedio.works/sec due to commit:
commit: ef4eebad9c018a972a470b7b41e68bc981b31d00 ("ext4: improve cr 0 / cr 1 group scanning")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git Harshad-Shirwadkar/ext4-drop-s_mb_bal_lock-and-convert-protected-fields-to-atomic/20210210-054647
in testcase: fxmark
on test machine: 288 threads Intel(R) Xeon Phi(TM) CPU 7295 @ 1.50GHz with 80G memory
with following parameters:
disk: 1HDD
media: hdd
test: MWCL
fstype: ext4_no_jnl
directio: bufferedio
cpufreq_governor: performance
ucode: 0x11
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml
bin/lkp run compatible-job.yaml
=========================================================================================
compiler/cpufreq_governor/directio/disk/fstype/kconfig/media/rootfs/tbox_group/test/testcase/ucode:
gcc-9/performance/bufferedio/1HDD/ext4_no_jnl/x86_64-rhel-8.3/hdd/debian-10.4-x86_64-20200603.cgz/lkp-knm01/MWCL/fxmark/0x11
commit:
a932b2b788 ("ext4: add MB_NUM_ORDERS macro")
ef4eebad9c ("ext4: improve cr 0 / cr 1 group scanning")
a932b2b7885865bd ef4eebad9c018a972a470b7b41e
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
0:4 5% 0:4 perf-profile.children.cycles-pp.error_return
1:4 10% 1:4 perf-profile.children.cycles-pp.error_entry
:4 4% 0:4 perf-profile.self.cycles-pp.error_return
1:4 9% 1:4 perf-profile.self.cycles-pp.error_entry
%stddev %change %stddev
\ | \
315979 -9.8% 284922 fxmark.hdd_ext4_no_jnl_MWCL_1_bufferedio.works
10532 -9.8% 9497 fxmark.hdd_ext4_no_jnl_MWCL_1_bufferedio.works/sec
0.01 ±100% +38150.0% 1.91 ± 11% fxmark.hdd_ext4_no_jnl_MWCL_2_bufferedio.iowait_sec
0.01 ±100% +38189.0% 3.16 ± 11% fxmark.hdd_ext4_no_jnl_MWCL_2_bufferedio.iowait_util
5.33 ± 17% +22.5% 6.52 ± 4% fxmark.hdd_ext4_no_jnl_MWCL_36_bufferedio.idle_sec
0.49 ± 16% +22.2% 0.60 ± 4% fxmark.hdd_ext4_no_jnl_MWCL_36_bufferedio.idle_util
6.50 ± 9% -21.6% 5.09 ± 8% fxmark.hdd_ext4_no_jnl_MWCL_45_bufferedio.idle_sec
0.48 ± 9% -22.6% 0.37 ± 10% fxmark.hdd_ext4_no_jnl_MWCL_45_bufferedio.idle_util
0.00 ±173% +75800.0% 1.90 ± 22% fxmark.hdd_ext4_no_jnl_MWCL_4_bufferedio.iowait_sec
0.00 ±173% +75915.1% 1.57 ± 22% fxmark.hdd_ext4_no_jnl_MWCL_4_bufferedio.iowait_util
0.52 ± 6% -11.1% 0.46 ± 4% fxmark.hdd_ext4_no_jnl_MWCL_54_bufferedio.softirq_util
1090 +3.2% 1124 fxmark.time.elapsed_time
1090 +3.2% 1124 fxmark.time.elapsed_time.max
65107 -5.9% 61260 fxmark.time.involuntary_context_switches
69.50 -5.8% 65.50 fxmark.time.percent_of_cpu_this_job_got
28.28 -4.1% 27.11 ± 2% fxmark.time.user_time
5.50 ± 3% +2.8 8.26 ± 4% mpstat.cpu.all.iowait%
58.50 -2.6% 57.00 vmstat.cpu.id
38021 -6.2% 35647 vmstat.io.bo
85553 -4.1% 82045 vmstat.system.in
58.98 -2.7% 57.37 iostat.cpu.idle
5.57 ± 4% +49.8% 8.34 ± 4% iostat.cpu.iowait
30.35 -3.1% 29.41 iostat.cpu.system
2.81 -5.3% 2.66 iostat.cpu.user
711278 +15.3% 820380 meminfo.Dirty
7003710 -9.0% 6376219 meminfo.KReclaimable
1840 ± 12% +21.4% 2233 meminfo.Mlocked
7003710 -9.0% 6376219 meminfo.SReclaimable
710759 +15.4% 820265 numa-meminfo.node0.Dirty
6994361 -9.0% 6365487 numa-meminfo.node0.KReclaimable
1053 ± 12% +21.6% 1281 numa-meminfo.node0.Mlocked
6994361 -9.0% 6365487 numa-meminfo.node0.SReclaimable
177664 +15.5% 205237 numa-vmstat.node0.nr_dirty
262.75 ± 12% +21.9% 320.25 numa-vmstat.node0.nr_mlock
1751239 -9.0% 1594254 numa-vmstat.node0.nr_slab_reclaimable
178395 +15.4% 205952 numa-vmstat.node0.nr_zone_write_pending
2244 ± 68% -82.7% 387.72 ± 15% sched_debug.cfs_rq:/.load_avg.max
309.86 ± 59% -72.6% 84.98 ± 14% sched_debug.cfs_rq:/.load_avg.stddev
385204 ± 8% -35.5% 248625 ± 6% sched_debug.cfs_rq:/.min_vruntime.stddev
-681107 -51.9% -327811 sched_debug.cfs_rq:/.spread0.min
385220 ± 8% -35.5% 248625 ± 6% sched_debug.cfs_rq:/.spread0.stddev
10.05 ± 51% +506.0% 60.92 ± 32% sched_debug.cfs_rq:/.util_est_enqueued.min
125.29 ± 14% -18.5% 102.09 ± 7% sched_debug.cfs_rq:/.util_est_enqueued.stddev
24.34 ± 8% -21.6% 19.08 ± 2% sched_debug.cpu.clock.stddev
61783 ± 8% +33.0% 82157 ± 7% sched_debug.cpu.nr_switches.avg
35702 ± 8% +55.3% 55461 ± 11% sched_debug.cpu.nr_switches.min
7989 ± 25% +87.6% 14991 ± 24% softirqs.CPU1.BLOCK
123512 ± 3% -7.6% 114086 ± 2% softirqs.CPU21.RCU
122473 ± 3% -6.6% 114426 ± 2% softirqs.CPU25.RCU
66489 ± 5% -11.7% 58718 ± 5% softirqs.CPU29.SCHED
99247 ± 3% -8.6% 90723 ± 5% softirqs.CPU33.RCU
56394 ± 3% -13.5% 48805 ± 5% softirqs.CPU36.SCHED
43799 ± 4% -12.9% 38133 ± 4% softirqs.CPU45.SCHED
44447 ± 4% -12.0% 39128 ± 5% softirqs.CPU51.SCHED
169512 ± 3% -11.3% 150299 ± 3% softirqs.CPU6.RCU
33198 ± 5% -14.9% 28240 ± 11% softirqs.CPU60.SCHED
147310 ± 6% -9.0% 134107 ± 2% softirqs.CPU9.RCU
0.04 ± 6% -0.0 0.03 ± 14% perf-stat.i.branch-miss-rate%
326874 ± 8% -15.0% 277893 ± 12% perf-stat.i.branch-misses
41754 -4.6% 39817 perf-stat.i.cpu-clock
85.39 -2.9% 82.87 perf-stat.i.cpu-migrations
0.38 ± 10% -16.2% 0.32 ± 11% perf-stat.i.instructions-per-iTLB-miss
0.00 ± 11% -17.2% 0.00 ± 11% perf-stat.i.ipc
1.06 ± 3% -7.8% 0.98 perf-stat.i.major-faults
0.35 +4.1% 0.37 perf-stat.i.metric.K/sec
41754 -4.6% 39817 perf-stat.i.task-clock
348107 ± 7% -14.8% 296451 ± 12% perf-stat.ps.branch-misses
41967 -4.6% 40020 perf-stat.ps.cpu-clock
85.62 -2.9% 83.09 perf-stat.ps.cpu-migrations
1.05 ± 3% -7.7% 0.97 perf-stat.ps.major-faults
41967 -4.6% 40020 perf-stat.ps.task-clock
0.11 ± 8% -33.2% 0.07 ± 28% perf-sched.sch_delay.avg.ms.io_schedule.rq_qos_wait.wbt_wait.__rq_qos_throttle
0.02 ± 9% -100.0% 0.00 perf-sched.sch_delay.avg.ms.kthreadd.ret_from_fork
0.28 ± 83% -86.7% 0.04 ± 33% perf-sched.sch_delay.avg.ms.preempt_schedule_common._cond_resched.mempool_alloc.bio_alloc_bioset.submit_bh_wbc
0.01 ± 11% -100.0% 0.00 perf-sched.sch_delay.avg.ms.schedule_preempt_disabled.kthread.ret_from_fork
0.06 ± 19% -28.4% 0.04 ± 8% perf-sched.sch_delay.avg.ms.schedule_timeout.rcu_gp_kthread.kthread.ret_from_fork
0.01 ±100% +141.3% 0.03 ± 8% perf-sched.sch_delay.avg.ms.schedule_timeout.wait_for_completion.__flush_work.lru_add_drain_all
0.06 ± 10% -100.0% 0.00 perf-sched.sch_delay.avg.ms.schedule_timeout.wait_for_completion_killable.__kthread_create_on_node.kthread_create_on_node
0.35 ±113% -79.7% 0.07 ± 40% perf-sched.sch_delay.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.do_syscall_64
2.77 ± 40% -46.4% 1.49 ± 53% perf-sched.sch_delay.max.ms.io_schedule.rq_qos_wait.wbt_wait.__rq_qos_throttle
0.03 ± 21% -100.0% 0.00 perf-sched.sch_delay.max.ms.kthreadd.ret_from_fork
0.01 ± 11% -100.0% 0.00 perf-sched.sch_delay.max.ms.schedule_preempt_disabled.kthread.ret_from_fork
0.06 ± 13% -100.0% 0.00 perf-sched.sch_delay.max.ms.schedule_timeout.wait_for_completion_killable.__kthread_create_on_node.kthread_create_on_node
139.75 ± 7% -13.4% 121.00 ± 3% perf-sched.wait_and_delay.count.preempt_schedule_common._cond_resched.shrink_dentry_list.prune_dcache_sb.super_cache_scan
8210 ± 10% -26.3% 6048 ± 12% perf-sched.wait_and_delay.max.ms.worker_thread.kthread.ret_from_fork
88.37 ± 15% -18.2% 72.31 ± 11% perf-sched.wait_time.avg.ms.preempt_schedule_common._cond_resched.mempool_alloc.bio_alloc_bioset.submit_bh_wbc
79.45 ±109% +329.8% 341.45 ± 42% perf-sched.wait_time.avg.ms.preempt_schedule_common._cond_resched.mutex_lock.drm_gem_shmem_vunmap.mgag200_handle_damage
129.91 ± 2% +52.5% 198.10 ± 48% perf-sched.wait_time.max.ms.preempt_schedule_common._cond_resched.submit_bio_checks.submit_bio_noacct.submit_bio
130.18 ± 3% +72.5% 224.52 ± 51% perf-sched.wait_time.max.ms.preempt_schedule_common._cond_resched.write_cache_pages.generic_writepages.do_writepages
8210 ± 10% -26.3% 6048 ± 12% perf-sched.wait_time.max.ms.worker_thread.kthread.ret_from_fork
639.00 -4.1% 613.00 proc-vmstat.nr_active_anon
109230 -4.7% 104085 proc-vmstat.nr_active_file
9734223 -3.3% 9414937 proc-vmstat.nr_dirtied
178266 +15.5% 205864 proc-vmstat.nr_dirty
460.75 ± 12% +21.4% 559.50 proc-vmstat.nr_mlock
1758100 -8.9% 1601542 proc-vmstat.nr_slab_reclaimable
68945 -3.0% 66853 proc-vmstat.nr_slab_unreclaimable
9734223 -3.3% 9414937 proc-vmstat.nr_written
639.00 -4.1% 613.00 proc-vmstat.nr_zone_active_anon
109230 -4.7% 104085 proc-vmstat.nr_zone_active_file
179007 +15.4% 206596 proc-vmstat.nr_zone_write_pending
24225927 -2.2% 23703313 proc-vmstat.numa_hit
24225924 -2.2% 23703311 proc-vmstat.numa_local
47793203 -3.0% 46353511 proc-vmstat.pgalloc_normal
4923908 +11.4% 5485129 proc-vmstat.pgdeactivate
3348086 +2.3% 3425886 proc-vmstat.pgfault
47786479 -3.0% 46346216 proc-vmstat.pgfree
41377300 -3.3% 40023642 proc-vmstat.pgpgout
264776 +2.5% 271513 proc-vmstat.pgreuse
4916073 +11.4% 5477332 proc-vmstat.pgrotated
1.779e+08 -2.8% 1.729e+08 proc-vmstat.slabs_scanned
9334464 +2.8% 9594624 proc-vmstat.unevictable_pgs_scanned
662.25 ± 8% -15.7% 558.50 ± 6% slabinfo.Acpi-Parse.active_objs
3972051 -9.0% 3616212 slabinfo.dentry.active_objs
189593 -8.9% 172660 slabinfo.dentry.active_slabs
3981471 -8.9% 3625865 slabinfo.dentry.num_objs
189593 -8.9% 172660 slabinfo.dentry.num_slabs
3665 +602.8% 25759 slabinfo.ext4_extent_status.active_objs
39.75 +558.5% 261.75 slabinfo.ext4_extent_status.active_slabs
4090 +554.0% 26752 slabinfo.ext4_extent_status.num_objs
39.75 +558.5% 261.75 slabinfo.ext4_extent_status.num_slabs
4203 ± 3% -100.0% 0.00 slabinfo.ext4_groupinfo_4k.active_objs
4254 ± 2% -100.0% 0.00 slabinfo.ext4_groupinfo_4k.num_objs
5178202 -9.1% 4707049 slabinfo.ext4_inode_cache.active_objs
191816 -9.1% 174364 slabinfo.ext4_inode_cache.active_slabs
5179060 -9.1% 4707847 slabinfo.ext4_inode_cache.num_objs
191816 -9.1% 174364 slabinfo.ext4_inode_cache.num_slabs
1133 ± 5% -14.9% 965.00 ± 11% slabinfo.kmalloc-rcl-96.num_objs
20676 +24.1% 25662 slabinfo.radix_tree_node.active_objs
1642 +14.8% 1885 slabinfo.radix_tree_node.active_slabs
23002 +14.8% 26403 slabinfo.radix_tree_node.num_objs
1642 +14.8% 1885 slabinfo.radix_tree_node.num_slabs
1069 ± 7% +16.6% 1246 ± 6% slabinfo.skbuff_fclone_cache.active_objs
1250 ± 5% +15.8% 1448 ± 6% slabinfo.skbuff_fclone_cache.num_objs
3019 +122.2% 6710 interrupts.CPU0.180:IR-PCI-MSI.512000-edge.ahci[0000:00:1f.2]
14733 ± 10% +135.6% 34711 ± 39% interrupts.CPU1.180:IR-PCI-MSI.512000-edge.ahci[0000:00:1f.2]
74.25 ± 41% +328.6% 318.25 ± 54% interrupts.CPU1.37:IR-PCI-MSI.4194305-edge.eth0-TxRx-0
4354 ± 25% +29.9% 5655 ± 13% interrupts.CPU11.CAL:Function_call_interrupts
1283 +25.2% 1607 ± 29% interrupts.CPU127.CAL:Function_call_interrupts
10568 ± 28% +34.3% 14193 ± 15% interrupts.CPU2.CAL:Function_call_interrupts
985.00 ± 22% +130.9% 2274 ± 42% interrupts.CPU2.RES:Rescheduling_interrupts
263.25 ± 4% +24.5% 327.75 ± 20% interrupts.CPU2.TLB:TLB_shootdowns
312.00 ± 72% -50.9% 153.25 ± 22% interrupts.CPU20.NMI:Non-maskable_interrupts
312.00 ± 72% -50.9% 153.25 ± 22% interrupts.CPU20.PMI:Performance_monitoring_interrupts
4243 ± 10% +45.5% 6172 ± 5% interrupts.CPU22.CAL:Function_call_interrupts
3434 ± 20% +58.2% 5433 ± 35% interrupts.CPU25.CAL:Function_call_interrupts
491.25 ± 29% -55.7% 217.75 ± 35% interrupts.CPU27.NMI:Non-maskable_interrupts
491.25 ± 29% -55.7% 217.75 ± 35% interrupts.CPU27.PMI:Performance_monitoring_interrupts
390.50 ± 40% -46.4% 209.50 ± 9% interrupts.CPU29.RES:Rescheduling_interrupts
189.50 ± 11% +23.9% 234.75 ± 5% interrupts.CPU3.TLB:TLB_shootdowns
234.75 ± 32% -39.8% 141.25 ± 29% interrupts.CPU30.NMI:Non-maskable_interrupts
234.75 ± 32% -39.8% 141.25 ± 29% interrupts.CPU30.PMI:Performance_monitoring_interrupts
639.50 ± 65% -53.0% 300.75 ± 26% interrupts.CPU30.RES:Rescheduling_interrupts
371.50 ± 24% -32.5% 250.75 ± 8% interrupts.CPU34.RES:Rescheduling_interrupts
246.00 ± 23% -32.5% 166.00 ± 7% interrupts.CPU37.RES:Rescheduling_interrupts
550.25 ± 11% +91.9% 1055 ± 28% interrupts.CPU4.RES:Rescheduling_interrupts
165.75 ± 20% +108.1% 345.00 ± 47% interrupts.CPU47.NMI:Non-maskable_interrupts
165.75 ± 20% +108.1% 345.00 ± 47% interrupts.CPU47.PMI:Performance_monitoring_interrupts
2914 ± 10% +50.3% 4380 ± 23% interrupts.CPU48.CAL:Function_call_interrupts
6123 ± 9% +43.8% 8808 ± 18% interrupts.CPU5.CAL:Function_call_interrupts
146.25 ± 10% +185.0% 416.75 ± 30% interrupts.CPU5.NMI:Non-maskable_interrupts
146.25 ± 10% +185.0% 416.75 ± 30% interrupts.CPU5.PMI:Performance_monitoring_interrupts
477.50 ± 62% -70.2% 142.50 ± 22% interrupts.CPU6.NMI:Non-maskable_interrupts
477.50 ± 62% -70.2% 142.50 ± 22% interrupts.CPU6.PMI:Performance_monitoring_interrupts
580.00 ± 27% +127.7% 1320 ± 42% interrupts.CPU6.RES:Rescheduling_interrupts
479.50 ± 35% -56.8% 207.25 ± 62% interrupts.CPU62.NMI:Non-maskable_interrupts
479.50 ± 35% -56.8% 207.25 ± 62% interrupts.CPU62.PMI:Performance_monitoring_interrupts
1816 ± 14% +35.6% 2463 ± 29% interrupts.CPU65.CAL:Function_call_interrupts
142.25 ±100% -66.3% 48.00 ± 10% interrupts.CPU66.RES:Rescheduling_interrupts
459.50 ± 10% +42.2% 653.50 ± 16% interrupts.CPU7.RES:Rescheduling_interrupts
1282 +32.5% 1699 ± 27% interrupts.CPU97.CAL:Function_call_interrupts
1301 ± 2% +26.9% 1650 ± 28% interrupts.CPU98.CAL:Function_call_interrupts
12.78 ± 2% -1.9 10.92 ± 5% perf-profile.calltrace.cycles-pp.ret_from_fork
12.78 ± 2% -1.9 10.92 ± 5% perf-profile.calltrace.cycles-pp.kthread.ret_from_fork
4.48 ± 6% -1.6 2.90 ± 9% perf-profile.calltrace.cycles-pp.process_one_work.worker_thread.kthread.ret_from_fork
4.55 ± 6% -1.6 2.98 ± 9% perf-profile.calltrace.cycles-pp.worker_thread.kthread.ret_from_fork
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.write_cache_pages.generic_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.wb_workfn.process_one_work.worker_thread.kthread.ret_from_fork
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.wb_writeback.wb_workfn.process_one_work.worker_thread.kthread
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.__writeback_inodes_wb.wb_writeback.wb_workfn.process_one_work.worker_thread
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.wb_workfn.process_one_work
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback.wb_workfn
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.do_writepages.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb.wb_writeback
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.calltrace.cycles-pp.generic_writepages.do_writepages.__writeback_single_inode.writeback_sb_inodes.__writeback_inodes_wb
3.07 ± 8% -1.3 1.80 ± 10% perf-profile.calltrace.cycles-pp.__writepage.write_cache_pages.generic_writepages.do_writepages.__writeback_single_inode
2.98 ± 8% -1.2 1.75 ± 10% perf-profile.calltrace.cycles-pp.__block_write_full_page.__writepage.write_cache_pages.generic_writepages.do_writepages
2.06 ± 8% -0.9 1.20 ± 11% perf-profile.calltrace.cycles-pp.submit_bh_wbc.__block_write_full_page.__writepage.write_cache_pages.generic_writepages
14.52 ± 2% -0.6 13.89 perf-profile.calltrace.cycles-pp.shrink_dentry_list.prune_dcache_sb.super_cache_scan.do_shrink_slab.shrink_slab
16.80 -0.6 16.21 perf-profile.calltrace.cycles-pp.prune_dcache_sb.super_cache_scan.do_shrink_slab.shrink_slab.drop_slab_node
1.34 ± 9% -0.6 0.78 ± 8% perf-profile.calltrace.cycles-pp.submit_bio.submit_bh_wbc.__block_write_full_page.__writepage.write_cache_pages
1.29 ± 10% -0.5 0.77 ± 9% perf-profile.calltrace.cycles-pp.submit_bio_noacct.submit_bio.submit_bh_wbc.__block_write_full_page.__writepage
0.94 ± 7% -0.5 0.48 ± 59% perf-profile.calltrace.cycles-pp.end_bio_bh_io_sync.blk_update_request.scsi_end_request.scsi_io_completion.blk_done_softirq
1.23 ± 7% -0.4 0.81 ± 14% perf-profile.calltrace.cycles-pp.blk_done_softirq.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn.kthread
1.21 ± 7% -0.4 0.81 ± 14% perf-profile.calltrace.cycles-pp.scsi_io_completion.blk_done_softirq.__softirqentry_text_start.run_ksoftirqd.smpboot_thread_fn
1.21 ± 7% -0.4 0.81 ± 14% perf-profile.calltrace.cycles-pp.scsi_end_request.scsi_io_completion.blk_done_softirq.__softirqentry_text_start.run_ksoftirqd
1.17 ± 7% -0.4 0.77 ± 14% perf-profile.calltrace.cycles-pp.blk_update_request.scsi_end_request.scsi_io_completion.blk_done_softirq.__softirqentry_text_start
2.99 ± 2% -0.2 2.79 ± 3% perf-profile.calltrace.cycles-pp.__d_drop.__dentry_kill.shrink_dentry_list.prune_dcache_sb.super_cache_scan
2.93 ± 2% -0.2 2.73 ± 3% perf-profile.calltrace.cycles-pp.___d_drop.__d_drop.__dentry_kill.shrink_dentry_list.prune_dcache_sb
2.30 -0.1 2.18 ± 3% perf-profile.calltrace.cycles-pp.shrink_lock_dentry.shrink_dentry_list.prune_dcache_sb.super_cache_scan.do_shrink_slab
1.18 ± 4% -0.1 1.09 ± 3% perf-profile.calltrace.cycles-pp.rcu_cblist_dequeue.rcu_do_batch.rcu_core.__softirqentry_text_start.run_ksoftirqd
0.56 ± 6% +0.1 0.70 ± 8% perf-profile.calltrace.cycles-pp.__remove_hrtimer.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.asm_call_sysvec_on_stack
0.58 ± 4% +0.1 0.73 ± 7% perf-profile.calltrace.cycles-pp.ext4_discard_preallocations.ext4_clear_inode.ext4_evict_inode.evict.dispose_list
0.79 ± 4% +0.2 0.95 ± 10% perf-profile.calltrace.cycles-pp.rcu_sched_clock_irq.update_process_times.tick_sched_handle.tick_sched_timer.__hrtimer_run_queues
5.57 +0.3 5.88 ± 4% perf-profile.calltrace.cycles-pp.evict.dispose_list.prune_icache_sb.super_cache_scan.do_shrink_slab
7.17 +0.4 7.55 ± 2% perf-profile.calltrace.cycles-pp.dispose_list.prune_icache_sb.super_cache_scan.do_shrink_slab.shrink_slab
8.87 +0.5 9.33 ± 2% perf-profile.calltrace.cycles-pp.prune_icache_sb.super_cache_scan.do_shrink_slab.shrink_slab.drop_slab_node
5.66 ± 2% +0.5 6.16 ± 4% perf-profile.calltrace.cycles-pp.tick_sched_timer.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.asm_call_sysvec_on_stack
0.00 +0.6 0.57 ± 9% perf-profile.calltrace.cycles-pp.timerqueue_del.__remove_hrtimer.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt
8.54 ± 2% +0.9 9.47 ± 3% perf-profile.calltrace.cycles-pp.__hrtimer_run_queues.hrtimer_interrupt.__sysvec_apic_timer_interrupt.asm_call_sysvec_on_stack.sysvec_apic_timer_interrupt
26.26 +1.1 27.37 ± 3% perf-profile.calltrace.cycles-pp.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry
24.24 ± 2% +1.1 25.38 ± 3% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter.do_idle
14.93 ± 2% +1.3 16.23 ± 2% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.asm_call_sysvec_on_stack.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state
14.28 ± 2% +1.4 15.63 ± 3% perf-profile.calltrace.cycles-pp.hrtimer_interrupt.__sysvec_apic_timer_interrupt.asm_call_sysvec_on_stack.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
15.05 ± 2% +1.4 16.42 ± 2% perf-profile.calltrace.cycles-pp.asm_call_sysvec_on_stack.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.cpuidle_enter_state.cpuidle_enter
53.89 ± 2% +2.1 56.02 perf-profile.calltrace.cycles-pp.secondary_startup_64_no_verify
53.09 ± 2% +2.2 55.29 perf-profile.calltrace.cycles-pp.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
42.65 ± 2% +2.2 44.86 perf-profile.calltrace.cycles-pp.cpuidle_enter_state.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary
43.61 ± 2% +2.2 45.83 perf-profile.calltrace.cycles-pp.cpuidle_enter.do_idle.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
53.16 ± 2% +2.2 55.40 perf-profile.calltrace.cycles-pp.cpu_startup_entry.start_secondary.secondary_startup_64_no_verify
53.16 ± 2% +2.2 55.40 perf-profile.calltrace.cycles-pp.start_secondary.secondary_startup_64_no_verify
12.81 ± 2% -1.9 10.94 ± 5% perf-profile.children.cycles-pp.ret_from_fork
12.78 ± 2% -1.9 10.92 ± 5% perf-profile.children.cycles-pp.kthread
4.48 ± 6% -1.6 2.90 ± 9% perf-profile.children.cycles-pp.process_one_work
4.55 ± 6% -1.6 2.98 ± 9% perf-profile.children.cycles-pp.worker_thread
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.wb_workfn
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.wb_writeback
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.__writeback_inodes_wb
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.writeback_sb_inodes
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.__writeback_single_inode
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.do_writepages
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.generic_writepages
3.70 ± 7% -1.5 2.19 ± 10% perf-profile.children.cycles-pp.write_cache_pages
3.07 ± 8% -1.3 1.80 ± 10% perf-profile.children.cycles-pp.__writepage
2.98 ± 8% -1.2 1.75 ± 10% perf-profile.children.cycles-pp.__block_write_full_page
2.06 ± 8% -0.9 1.20 ± 10% perf-profile.children.cycles-pp.submit_bh_wbc
1.78 ± 6% -0.6 1.13 ± 17% perf-profile.children.cycles-pp.blk_done_softirq
1.76 ± 6% -0.6 1.11 ± 17% perf-profile.children.cycles-pp.scsi_io_completion
1.76 ± 6% -0.6 1.11 ± 17% perf-profile.children.cycles-pp.scsi_end_request
14.55 ± 2% -0.6 13.92 perf-profile.children.cycles-pp.shrink_dentry_list
1.68 ± 7% -0.6 1.07 ± 17% perf-profile.children.cycles-pp.blk_update_request
16.80 -0.6 16.21 perf-profile.children.cycles-pp.prune_dcache_sb
1.34 ± 10% -0.6 0.78 ± 9% perf-profile.children.cycles-pp.submit_bio
1.29 ± 10% -0.5 0.77 ± 8% perf-profile.children.cycles-pp.submit_bio_noacct
1.35 ± 7% -0.5 0.84 ± 18% perf-profile.children.cycles-pp.end_bio_bh_io_sync
0.97 ± 8% -0.3 0.62 ± 17% perf-profile.children.cycles-pp.end_page_writeback
0.79 ± 6% -0.3 0.49 ± 9% perf-profile.children.cycles-pp.blk_mq_submit_bio
0.67 ± 12% -0.3 0.40 ± 12% perf-profile.children.cycles-pp.__test_set_page_writeback
0.57 ± 8% -0.2 0.35 ± 30% perf-profile.children.cycles-pp.sysvec_call_function_single
0.57 ± 8% -0.2 0.35 ± 31% perf-profile.children.cycles-pp.asm_sysvec_call_function_single
3.01 ± 2% -0.2 2.80 ± 3% perf-profile.children.cycles-pp.__d_drop
0.55 ± 10% -0.2 0.34 ± 21% perf-profile.children.cycles-pp.test_clear_page_writeback
2.94 ± 2% -0.2 2.75 ± 3% perf-profile.children.cycles-pp.___d_drop
0.42 ± 8% -0.2 0.23 ± 17% perf-profile.children.cycles-pp.bio_alloc_bioset
0.40 ± 16% -0.2 0.23 ± 14% perf-profile.children.cycles-pp.submit_bio_checks
0.51 ± 12% -0.2 0.36 ± 8% perf-profile.children.cycles-pp.kmem_cache_alloc
0.32 ± 12% -0.1 0.17 ± 19% perf-profile.children.cycles-pp.mempool_alloc
0.32 ± 6% -0.1 0.18 ± 10% perf-profile.children.cycles-pp.clear_page_dirty_for_io
0.38 ± 8% -0.1 0.25 ± 17% perf-profile.children.cycles-pp.rotate_reclaimable_page
2.31 -0.1 2.19 ± 3% perf-profile.children.cycles-pp.shrink_lock_dentry
0.45 ± 11% -0.1 0.33 ± 5% perf-profile.children.cycles-pp.try_to_wake_up
0.28 ± 18% -0.1 0.16 ± 27% perf-profile.children.cycles-pp.end_buffer_async_write
0.28 ± 7% -0.1 0.18 ± 21% perf-profile.children.cycles-pp.blk_attempt_plug_merge
0.19 ± 15% -0.1 0.09 ± 7% perf-profile.children.cycles-pp.percpu_counter_add_batch
0.16 ± 16% -0.1 0.08 ± 68% perf-profile.children.cycles-pp.__slab_alloc
0.29 ± 11% -0.1 0.21 ± 15% perf-profile.children.cycles-pp.pagevec_lru_move_fn
0.21 ± 21% -0.1 0.13 ± 11% perf-profile.children.cycles-pp.open64
0.28 ± 14% -0.1 0.20 ± 4% perf-profile.children.cycles-pp.perf_trace_sched_wakeup_template
0.15 ± 19% -0.1 0.07 ± 71% perf-profile.children.cycles-pp.fscrypt_drop_inode
0.17 ± 13% -0.1 0.10 ± 11% perf-profile.children.cycles-pp.bio_attempt_back_merge
0.15 ± 15% -0.1 0.07 ± 67% perf-profile.children.cycles-pp.___slab_alloc
0.24 ± 14% -0.1 0.16 ± 11% perf-profile.children.cycles-pp.pagevec_move_tail_fn
0.14 ± 21% -0.1 0.07 ± 19% perf-profile.children.cycles-pp.blk_throtl_bio
0.21 ± 14% -0.1 0.15 ± 9% perf-profile.children.cycles-pp.blk_mq_dispatch_rq_list
0.10 ± 14% -0.1 0.04 ±101% perf-profile.children.cycles-pp.allocate_slab
0.12 ± 25% -0.1 0.06 ± 26% perf-profile.children.cycles-pp.__mod_lruvec_state
0.20 ± 13% -0.1 0.15 ± 11% perf-profile.children.cycles-pp.scsi_queue_rq
0.10 ± 25% -0.1 0.05 ± 62% perf-profile.children.cycles-pp.__close_nocancel
0.08 ± 15% -0.1 0.03 ±100% perf-profile.children.cycles-pp.__split_vma
0.17 ± 8% -0.1 0.12 ± 9% perf-profile.children.cycles-pp.can_stop_idle_tick
0.15 ± 19% -0.0 0.11 ± 28% perf-profile.children.cycles-pp.get_page_from_freelist
0.09 ± 20% -0.0 0.05 ± 62% perf-profile.children.cycles-pp.__vm_munmap
0.15 ± 10% -0.0 0.11 ± 11% perf-profile.children.cycles-pp.schedule_timeout
0.14 ± 13% -0.0 0.10 ± 25% perf-profile.children.cycles-pp.call_timer_fn
0.09 ± 13% -0.0 0.05 ± 58% perf-profile.children.cycles-pp.enqueue_entity
0.23 ± 7% -0.0 0.20 ± 4% perf-profile.children.cycles-pp.rcu_segcblist_enqueue
0.23 ± 6% -0.0 0.20 ± 5% perf-profile.children.cycles-pp.rcu_gp_kthread
0.17 ± 9% -0.0 0.14 ± 3% perf-profile.children.cycles-pp.tick_nohz_idle_got_tick
0.10 ± 8% -0.0 0.08 ± 19% perf-profile.children.cycles-pp.enqueue_task_fair
0.04 ± 60% +0.0 0.08 ± 5% perf-profile.children.cycles-pp.rcu_irq_enter
0.06 ± 11% +0.0 0.10 ± 12% perf-profile.children.cycles-pp.arch_cpu_idle_exit
0.14 ± 7% +0.0 0.19 ± 16% perf-profile.children.cycles-pp.update_dl_rq_load_avg
0.07 ± 58% +0.1 0.12 ± 12% perf-profile.children.cycles-pp.delay_tsc
0.44 ± 5% +0.1 0.49 ± 4% perf-profile.children.cycles-pp.truncate_inode_pages_final
0.18 ± 26% +0.1 0.23 ± 5% perf-profile.children.cycles-pp.update_ts_time_stats
0.00 +0.1 0.07 ± 17% perf-profile.children.cycles-pp.perf_iterate_sb
0.11 ± 17% +0.1 0.19 ± 21% perf-profile.children.cycles-pp.tick_program_event
0.17 ± 17% +0.1 0.24 ± 4% perf-profile.children.cycles-pp.cpuidle_not_available
0.46 ± 6% +0.1 0.54 ± 6% perf-profile.children.cycles-pp.__x86_retpoline_rax
0.02 ±173% +0.1 0.11 ± 25% perf-profile.children.cycles-pp.cpuidle_get_cpu_driver
0.80 ± 4% +0.1 0.90 ± 2% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore
0.58 ± 10% +0.1 0.71 ± 7% perf-profile.children.cycles-pp.enqueue_hrtimer
1.74 +0.1 1.87 ± 4% perf-profile.children.cycles-pp.__list_del_entry_valid
0.45 ± 12% +0.1 0.59 ± 6% perf-profile.children.cycles-pp.timerqueue_add
0.59 ± 4% +0.1 0.73 ± 7% perf-profile.children.cycles-pp.ext4_discard_preallocations
0.87 ± 6% +0.2 1.02 ± 10% perf-profile.children.cycles-pp.rcu_sched_clock_irq
0.53 ± 6% +0.2 0.71 ± 9% perf-profile.children.cycles-pp.timerqueue_del
0.66 ± 9% +0.2 0.84 ± 8% perf-profile.children.cycles-pp.__remove_hrtimer
0.26 ± 35% +0.2 0.45 ± 18% perf-profile.children.cycles-pp.timekeeping_max_deferment
7.18 +0.4 7.55 ± 2% perf-profile.children.cycles-pp.dispose_list
5.14 +0.4 5.53 ± 3% perf-profile.children.cycles-pp.kmem_cache_free
8.87 +0.5 9.33 ± 2% perf-profile.children.cycles-pp.prune_icache_sb
10.50 ± 2% +1.7 12.19 ± 11% perf-profile.children.cycles-pp.__hrtimer_run_queues
44.20 ± 2% +2.1 46.30 perf-profile.children.cycles-pp.cpuidle_enter
16.58 ± 2% +2.1 18.70 ± 8% perf-profile.children.cycles-pp.hrtimer_interrupt
53.89 ± 2% +2.1 56.02 perf-profile.children.cycles-pp.secondary_startup_64_no_verify
53.89 ± 2% +2.1 56.02 perf-profile.children.cycles-pp.cpu_startup_entry
53.89 ± 2% +2.1 56.02 perf-profile.children.cycles-pp.do_idle
44.06 ± 2% +2.2 46.23 perf-profile.children.cycles-pp.cpuidle_enter_state
28.19 ± 2% +2.2 30.37 ± 3% perf-profile.children.cycles-pp.sysvec_apic_timer_interrupt
17.26 +2.2 19.47 ± 7% perf-profile.children.cycles-pp.__sysvec_apic_timer_interrupt
53.16 ± 2% +2.2 55.40 perf-profile.children.cycles-pp.start_secondary
29.75 ± 2% +2.3 32.02 ± 3% perf-profile.children.cycles-pp.asm_sysvec_apic_timer_interrupt
2.56 ± 2% -0.3 2.25 ± 7% perf-profile.self.cycles-pp.___d_drop
0.77 ± 6% -0.2 0.59 ± 10% perf-profile.self.cycles-pp.tick_nohz_next_event
0.12 ± 23% -0.1 0.04 ±101% perf-profile.self.cycles-pp.fscrypt_drop_inode
0.16 ± 10% -0.1 0.08 ± 10% perf-profile.self.cycles-pp.percpu_counter_add_batch
0.15 ± 22% -0.1 0.09 ± 20% perf-profile.self.cycles-pp.__test_set_page_writeback
0.09 ± 14% -0.1 0.03 ±100% perf-profile.self.cycles-pp.clear_page_dirty_for_io
0.17 ± 8% -0.1 0.11 ± 21% perf-profile.self.cycles-pp.__block_write_full_page
0.19 ± 21% -0.1 0.13 ± 3% perf-profile.self.cycles-pp.kmem_cache_alloc
0.19 ± 5% -0.1 0.14 ± 10% perf-profile.self.cycles-pp.cpuidle_governor_latency_req
0.12 ± 7% -0.1 0.07 ± 62% perf-profile.self.cycles-pp.cpuidle_enter
0.10 ± 14% -0.1 0.05 ± 60% perf-profile.self.cycles-pp.end_bio_bh_io_sync
0.17 ± 8% -0.1 0.12 ± 9% perf-profile.self.cycles-pp.can_stop_idle_tick
0.23 ± 7% -0.0 0.19 ± 3% perf-profile.self.cycles-pp.rcu_segcblist_enqueue
0.08 ± 23% -0.0 0.04 ± 63% perf-profile.self.cycles-pp.find_get_pages_range_tag
0.08 ± 6% -0.0 0.04 ± 59% perf-profile.self.cycles-pp.__d_drop
0.09 ± 13% +0.0 0.12 ± 15% perf-profile.self.cycles-pp.__x86_indirect_thunk_rax
0.10 ± 10% +0.0 0.14 ± 5% perf-profile.self.cycles-pp.tick_sched_handle
0.36 ± 5% +0.0 0.40 ± 2% perf-profile.self.cycles-pp.__x86_retpoline_rax
0.09 ± 27% +0.0 0.13 ± 17% perf-profile.self.cycles-pp.tick_nohz_tick_stopped
0.16 ± 7% +0.1 0.21 ± 16% perf-profile.self.cycles-pp.timerqueue_del
0.07 ± 58% +0.1 0.12 ± 12% perf-profile.self.cycles-pp.delay_tsc
0.01 ±173% +0.1 0.07 ± 7% perf-profile.self.cycles-pp.arch_cpu_idle_exit
0.18 ± 10% +0.1 0.23 ± 17% perf-profile.self.cycles-pp.update_blocked_averages
0.13 ± 8% +0.1 0.19 ± 16% perf-profile.self.cycles-pp.update_dl_rq_load_avg
0.11 ± 15% +0.1 0.18 ± 22% perf-profile.self.cycles-pp.tick_program_event
0.00 +0.1 0.07 ± 17% perf-profile.self.cycles-pp.rcu_irq_enter
0.19 ± 5% +0.1 0.26 ± 11% perf-profile.self.cycles-pp.__hrtimer_get_next_event
0.10 ± 27% +0.1 0.17 ± 8% perf-profile.self.cycles-pp.update_ts_time_stats
0.27 ± 6% +0.1 0.34 ± 8% perf-profile.self.cycles-pp.__sysvec_apic_timer_interrupt
0.16 ± 19% +0.1 0.24 ± 3% perf-profile.self.cycles-pp.cpuidle_not_available
0.40 ± 6% +0.1 0.48 ± 10% perf-profile.self.cycles-pp.ext4_discard_preallocations
0.02 ±173% +0.1 0.10 ± 22% perf-profile.self.cycles-pp.cpuidle_get_cpu_driver
0.33 ± 11% +0.1 0.42 ± 14% perf-profile.self.cycles-pp.rb_erase
0.20 ± 16% +0.1 0.29 ± 7% perf-profile.self.cycles-pp.timerqueue_add
0.18 ± 8% +0.1 0.28 ± 18% perf-profile.self.cycles-pp.irq_exit_rcu
0.71 ± 5% +0.1 0.84 ± 2% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore
0.67 ± 8% +0.2 0.84 ± 12% perf-profile.self.cycles-pp.rcu_sched_clock_irq
0.25 ± 36% +0.2 0.45 ± 18% perf-profile.self.cycles-pp.timekeeping_max_deferment
fxmark.hdd_ext4_no_jnl_MWCL_2_bufferedio.works_sec
23000 +-------------------------------------------------------------------+
|.+..+ +..+.+.+..+.+..+.+..+.+.+..+.+..+.+..+.+.+..+.+..+.+..+.|
22500 |-+ |
22000 |-+ |
| |
21500 |-+ |
| O O O O O O O O |
21000 |-+ O O O O O O O O O O O |
| O |
20500 |-+ |
20000 |-+ |
| |
19500 |-+ O O |
| O O |
19000 +-------------------------------------------------------------------+
fxmark.hdd_ext4_no_jnl_MWCL_2_bufferedio.iowait_sec
2.5 +---------------------------------------------------------------------+
| O |
| O O O O O O |
2 |-+ O O O |
| O O O O O |
| O O O O O O O O |
1.5 |-+ O |
| |
1 |-+ |
| |
| |
0.5 |-+ |
| |
| |
0 +---------------------------------------------------------------------+
fxmark.hdd_ext4_no_jnl_MWCL_2_bufferedio.iowait_util
4 +---------------------------------------------------------------------+
| O O O O |
3.5 |-+ O O O O O O |
3 |-+ |
| O O O O O O |
2.5 |-+ O O O O O O O O |
| |
2 |-+ |
| |
1.5 |-+ |
1 |-+ |
| |
0.5 |-+ |
| |
0 +---------------------------------------------------------------------+
fxmark.hdd_ext4_no_jnl_MWCL_1_bufferedio.works
320000 +------------------------------------------------------------------+
|. .. + .+.+.+.. .+.+.+..+.+..+.+.+..+.+.+..+. .+.+.+..+.+..+.|
310000 |-+ +. +.+. +. |
| |
300000 |-+ |
| |
290000 |-+ O O O O |
| O O O O O O O O O O O O O O |
280000 |-+ O O |
| |
270000 |-+ |
| O |
260000 |-O O O |
| |
250000 +------------------------------------------------------------------+
fxmark.hdd_ext4_no_jnl_MWCL_1_bufferedio.works_sec
10800 +-------------------------------------------------------------------+
10600 |-+ + .+ .+. .+ +.. |
|. .. + .+.+. + .+..+.+..+.+..+.+.+..+.+. +. + + +.+..+.+..+.|
10400 |-+ +. + + |
10200 |-+ |
10000 |-+ |
9800 |-+ |
| O O |
9600 |-+ O O O O O O O O O O |
9400 |-+ O O O O O O O O |
9200 |-+ |
9000 |-+ |
| |
8800 |-O O O |
8600 +-------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
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,
Oliver Sang
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