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Date: Wed, 18 Mar 2015 16:20:37 +0800
From: Huang Ying <ying.huang@...el.com>
To: Filipe Manana <fdmanana@...e.com>
Cc: Chris Mason <clm@...com>, LKML <linux-kernel@...r.kernel.org>,
LKP ML <lkp@...org>
Subject: [LKP] [Btrfs] 3a8b36f3780: -62.6% fileio.requests_per_sec
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 3a8b36f378060d20062a0918e99fae39ff077bf0 ("Btrfs: fix data loss in the fast fsync path")
testbox/testcase/testparams: lkp-sb02/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndwr-sync
f5c0a122800c301e 3a8b36f378060d20062a0918e9
---------------- --------------------------
%stddev %change %stddev
\ | \
45.33 ± 0% -62.6% 16.94 ± 0% fileio.requests_per_sec
138983 ± 0% +15.1% 160000 ± 0% fileio.time.voluntary_context_switches
16035 ± 0% +13.0% 18124 ± 0% fileio.time.involuntary_context_switches
2504328 ± 0% -7.2% 2324488 ± 0% fileio.time.file_system_outputs
1.35 ± 1% +2.8% 1.38 ± 0% turbostat.CorWatt
0.77 ± 6% +34.6% 1.03 ± 3% turbostat.Pkg%pc3
7224199 ± 22% -26.7% 5298697 ± 12% cpuidle.C1-SNB.time
8377756 ± 1% +15.7% 9690687 ± 4% cpuidle.C3-SNB.time
16035 ± 0% +13.0% 18124 ± 0% time.involuntary_context_switches
138983 ± 0% +15.1% 160000 ± 0% time.voluntary_context_switches
45941 ± 0% +11.0% 50983 ± 0% softirqs.BLOCK
35635 ± 2% +13.7% 40524 ± 2% softirqs.RCU
26255 ± 1% +10.5% 29017 ± 0% softirqs.SCHED
50650 ± 2% +11.3% 56371 ± 0% softirqs.TIMER
3448 ± 0% +1.6% 3503 ± 0% vmstat.io.bo
4010 ± 0% +2.7% 4119 ± 0% vmstat.system.cs
294711 ± 1% -17.1% 244365 ± 0% meminfo.Active
275793 ± 2% -18.1% 225971 ± 0% meminfo.Active(file)
53614 ± 6% +27.6% 68412 ± 15% meminfo.DirectMap4k
3781 ± 0% -46.9% 2006 ± 0% meminfo.Dirty
47786 ± 0% -14.7% 40780 ± 0% meminfo.SReclaimable
66047 ± 0% -10.7% 58973 ± 0% meminfo.Slab
68947 ± 2% -18.1% 56492 ± 0% proc-vmstat.nr_active_file
337110 ± 0% -10.0% 303330 ± 0% proc-vmstat.nr_dirtied
944 ± 0% -46.9% 501 ± 0% proc-vmstat.nr_dirty
11946 ± 0% -14.7% 10195 ± 0% proc-vmstat.nr_slab_reclaimable
335424 ± 0% -9.7% 302754 ± 0% proc-vmstat.nr_written
55839 ± 3% -15.0% 47438 ± 0% proc-vmstat.pgactivate
1142 ± 5% -16.2% 957 ± 17% slabinfo.btrfs_delayed_ref_head.active_objs
1146 ± 5% -16.0% 962 ± 17% slabinfo.btrfs_delayed_ref_head.num_objs
1246 ± 6% -29.4% 880 ± 15% slabinfo.btrfs_delayed_tree_ref.active_objs
1246 ± 6% -29.4% 880 ± 15% slabinfo.btrfs_delayed_tree_ref.num_objs
2037 ± 2% +60.0% 3260 ± 1% slabinfo.btrfs_extent_buffer.num_objs
2023 ± 2% +60.7% 3250 ± 1% slabinfo.btrfs_extent_buffer.active_objs
13307 ± 0% -57.7% 5634 ± 0% slabinfo.btrfs_extent_state.num_objs
260 ± 0% -57.8% 110 ± 0% slabinfo.btrfs_extent_state.num_slabs
13292 ± 0% -57.6% 5634 ± 0% slabinfo.btrfs_extent_state.active_objs
260 ± 0% -57.8% 110 ± 0% slabinfo.btrfs_extent_state.active_slabs
713 ± 1% -51.2% 348 ± 1% slabinfo.btrfs_ordered_extent.active_objs
718 ± 1% -48.1% 373 ± 1% slabinfo.btrfs_ordered_extent.num_objs
26930 ± 0% -57.1% 11557 ± 0% slabinfo.btrfs_path.num_objs
961 ± 0% -57.1% 412 ± 0% slabinfo.btrfs_path.active_slabs
961 ± 0% -57.1% 412 ± 0% slabinfo.btrfs_path.num_slabs
26930 ± 0% -57.1% 11557 ± 0% slabinfo.btrfs_path.active_objs
789 ± 4% -48.5% 406 ± 0% slabinfo.ext4_extent_status.num_objs
789 ± 4% -48.5% 406 ± 0% slabinfo.ext4_extent_status.active_objs
26083 ± 0% -28.3% 18697 ± 0% slabinfo.radix_tree_node.num_objs
26083 ± 0% -28.3% 18697 ± 0% slabinfo.radix_tree_node.active_objs
931 ± 0% -28.3% 667 ± 0% slabinfo.radix_tree_node.active_slabs
931 ± 0% -28.3% 667 ± 0% slabinfo.radix_tree_node.num_slabs
4 ± 38% +129.4% 9 ± 31% sched_debug.cfs_rq[0]:/.runnable_load_avg
17 ± 32% -54.9% 8 ± 45% sched_debug.cfs_rq[3]:/.runnable_load_avg
385 ± 14% -25.3% 287 ± 17% sched_debug.cfs_rq[3]:/.load
51947 ± 3% +15.4% 59938 ± 3% sched_debug.cpu#0.nr_load_updates
200860 ± 5% +11.6% 224079 ± 4% sched_debug.cpu#1.ttwu_local
47218 ± 2% +7.4% 50701 ± 2% sched_debug.cpu#1.nr_load_updates
5 ± 37% +105.0% 10 ± 26% sched_debug.cpu#1.cpu_load[1]
226755 ± 4% +11.4% 252611 ± 4% sched_debug.cpu#1.ttwu_count
2500 ± 34% -45.6% 1360 ± 33% sched_debug.cpu#3.curr->pid
385 ± 14% -25.8% 285 ± 16% sched_debug.cpu#3.load
testbox/testcase/testparams: bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndrw-sync
f5c0a122800c301e 3a8b36f378060d20062a0918e9
---------------- --------------------------
62.17 ± 0% -64.6% 22.03 ± 0% fileio.requests_per_sec
712336 ± 0% -64.2% 255005 ± 0% fileio.time.file_system_inputs
712336 ± 0% -64.2% 255005 ± 0% time.file_system_inputs
0.73 ± 3% -21.1% 0.58 ± 3% time.user_time
46562 ± 0% +29.5% 60303 ± 1% softirqs.RCU
57662 ± 0% +16.7% 67299 ± 0% softirqs.SCHED
259 ± 0% -64.3% 92 ± 0% vmstat.io.bi
3638 ± 1% -10.1% 3272 ± 2% meminfo.Dirty
432 ± 8% -25.8% 320 ± 28% proc-vmstat.allocstall
253 ± 9% -21.9% 197 ± 19% proc-vmstat.compact_fail
506 ± 8% -17.8% 416 ± 14% proc-vmstat.compact_stall
11262 ± 3% -20.1% 8996 ± 2% proc-vmstat.kswapd_low_wmark_hit_quickly
910 ± 1% -10.5% 815 ± 0% proc-vmstat.nr_dirty
17652 ± 2% -16.0% 14833 ± 3% proc-vmstat.pageoutrun
59446 ± 0% -20.2% 47455 ± 0% proc-vmstat.pgactivate
169701 ± 0% +11.5% 189186 ± 5% proc-vmstat.pgmigrate_success
355946 ± 0% -64.2% 127593 ± 0% proc-vmstat.pgpgin
27402 ± 7% -23.9% 20844 ± 29% proc-vmstat.pgsteal_direct_dma32
4868 ± 0% -56.8% 2104 ± 1% proc-vmstat.workingset_refault
1624 ± 3% -5.7% 1530 ± 1% slabinfo.Acpi-ParseExt.active_objs
1624 ± 3% -5.7% 1530 ± 1% slabinfo.Acpi-ParseExt.num_objs
1009 ± 6% -28.6% 720 ± 17% slabinfo.btrfs_delayed_data_ref.active_objs
1016 ± 6% -28.5% 726 ± 16% slabinfo.btrfs_delayed_data_ref.num_objs
849 ± 0% -10.3% 761 ± 4% slabinfo.btrfs_delayed_ref_head.active_objs
851 ± 0% -9.9% 767 ± 4% slabinfo.btrfs_delayed_ref_head.num_objs
10883 ± 1% -47.5% 5709 ± 4% slabinfo.btrfs_extent_state.num_objs
213 ± 1% -47.6% 111 ± 4% slabinfo.btrfs_extent_state.num_slabs
10794 ± 1% -48.6% 5551 ± 3% slabinfo.btrfs_extent_state.active_objs
213 ± 1% -47.6% 111 ± 4% slabinfo.btrfs_extent_state.active_slabs
6596 ± 0% -58.5% 2735 ± 1% slabinfo.btrfs_path.num_objs
235 ± 0% -58.6% 97 ± 1% slabinfo.btrfs_path.active_slabs
235 ± 0% -58.6% 97 ± 1% slabinfo.btrfs_path.num_slabs
6592 ± 0% -58.6% 2731 ± 1% slabinfo.btrfs_path.active_objs
5055 ± 6% -9.0% 4601 ± 2% slabinfo.kmalloc-32.num_objs
5055 ± 6% -9.0% 4601 ± 2% slabinfo.kmalloc-32.active_objs
1512 ± 2% -12.2% 1328 ± 5% slabinfo.kmalloc-96.num_objs
1512 ± 2% -12.2% 1328 ± 5% slabinfo.kmalloc-96.active_objs
459 ± 2% -16.8% 382 ± 6% sched_debug.cfs_rq[0]:/.blocked_load_avg
478 ± 1% -15.6% 403 ± 5% sched_debug.cfs_rq[0]:/.tg_load_contrib
49 ± 7% -9.1% 45 ± 11% sched_debug.cfs_rq[3]:/.tg_runnable_contrib
2337 ± 6% -9.9% 2106 ± 11% sched_debug.cfs_rq[3]:/.avg->runnable_avg_sum
25079 ± 3% -10.1% 22542 ± 4% sched_debug.cfs_rq[3]:/.exec_clock
28 ± 17% -35.7% 18 ± 9% sched_debug.cfs_rq[3]:/.nr_spread_over
499222 ± 12% -59.7% 201330 ± 40% sched_debug.cpu#0.sched_goidle
1018389 ± 12% -58.2% 425747 ± 37% sched_debug.cpu#0.nr_switches
90529 ± 4% -17.6% 74603 ± 8% sched_debug.cpu#0.nr_load_updates
513982 ± 13% -56.9% 221386 ± 36% sched_debug.cpu#0.ttwu_count
1019018 ± 12% -58.2% 426387 ± 37% sched_debug.cpu#0.sched_count
320 ± 3% -14.3% 274 ± 13% sched_debug.cpu#0.load
323974 ± 21% +131.6% 750473 ± 12% sched_debug.cpu#1.sched_count
323373 ± 21% +131.9% 749837 ± 12% sched_debug.cpu#1.nr_switches
89555 ± 46% +230.0% 295518 ± 16% sched_debug.cpu#1.ttwu_local
13 ± 30% +59.0% 20 ± 8% sched_debug.cpu#1.cpu_load[2]
8 ± 41% +111.8% 18 ± 12% sched_debug.cpu#1.cpu_load[4]
68535 ± 4% +22.2% 83732 ± 1% sched_debug.cpu#1.nr_load_updates
10 ± 33% +84.1% 19 ± 9% sched_debug.cpu#1.cpu_load[3]
160382 ± 16% +122.7% 357238 ± 12% sched_debug.cpu#1.ttwu_count
151508 ± 22% +140.8% 364820 ± 12% sched_debug.cpu#1.sched_goidle
388481 ± 2% -42.8% 222376 ± 46% sched_debug.cpu#2.ttwu_local
87970 ± 3% -6.8% 81971 ± 6% sched_debug.cpu#2.nr_load_updates
452753 ± 3% -37.3% 283785 ± 36% sched_debug.cpu#2.ttwu_count
916511 ± 5% -36.7% 580526 ± 36% sched_debug.cpu#2.nr_switches
917118 ± 5% -36.6% 581168 ± 36% sched_debug.cpu#2.sched_count
448592 ± 5% -37.9% 278755 ± 38% sched_debug.cpu#2.sched_goidle
140376 ± 7% +179.3% 392097 ± 28% sched_debug.cpu#3.sched_goidle
68344 ± 2% +24.1% 84790 ± 8% sched_debug.cpu#3.nr_load_updates
78592 ± 33% +335.3% 342125 ± 33% sched_debug.cpu#3.ttwu_local
300663 ± 7% +168.1% 806077 ± 27% sched_debug.cpu#3.sched_count
149690 ± 12% +182.2% 422447 ± 26% sched_debug.cpu#3.ttwu_count
300054 ± 7% +168.5% 805498 ± 27% sched_debug.cpu#3.nr_switches
testbox/testcase/testparams: bay/fileio/performance-600s-100%-1HDD-btrfs-64G-1024f-rndwr-sync
f5c0a122800c301e 3a8b36f378060d20062a0918e9
---------------- --------------------------
1.32 ± 6% +8834.3% 117.71 ±171% fileio.request_latency_max_ms
44.70 ± 0% -56.7% 19.35 ± 0% fileio.requests_per_sec
156010 ± 0% +38.4% 215846 ± 0% fileio.time.voluntary_context_switches
2663864 ± 0% -6.2% 2499112 ± 0% fileio.time.file_system_outputs
156010 ± 0% +38.4% 215846 ± 0% time.voluntary_context_switches
39761 ± 1% +22.5% 48712 ± 2% softirqs.RCU
37048 ± 1% +17.1% 43380 ± 2% softirqs.SCHED
52147 ± 1% +15.3% 60140 ± 1% softirqs.TIMER
2142 ± 0% +4.6% 2239 ± 0% vmstat.system.in
4067 ± 0% +5.9% 4307 ± 0% vmstat.system.cs
315172 ± 0% -13.9% 271267 ± 0% meminfo.Active
296097 ± 0% -14.5% 253063 ± 0% meminfo.Active(file)
3678 ± 0% -42.1% 2131 ± 1% meminfo.Dirty
47204 ± 0% -14.5% 40351 ± 0% meminfo.SReclaimable
64571 ± 0% -10.7% 57634 ± 0% meminfo.Slab
74024 ± 0% -14.5% 63263 ± 0% proc-vmstat.nr_active_file
919 ± 0% -42.1% 532 ± 1% proc-vmstat.nr_dirty
11801 ± 0% -14.5% 10087 ± 0% proc-vmstat.nr_slab_reclaimable
59906 ± 0% -25.1% 44895 ± 0% proc-vmstat.pgactivate
1971 ± 5% -8.0% 1814 ± 3% slabinfo.anon_vma.active_objs
1971 ± 5% -8.0% 1814 ± 3% slabinfo.anon_vma.num_objs
1759 ± 7% -17.1% 1457 ± 5% slabinfo.btrfs_delayed_data_ref.active_objs
1768 ± 7% -17.2% 1464 ± 5% slabinfo.btrfs_delayed_data_ref.num_objs
1081 ± 15% -41.9% 628 ± 11% slabinfo.btrfs_delayed_tree_ref.active_objs
1082 ± 15% -41.9% 628 ± 11% slabinfo.btrfs_delayed_tree_ref.num_objs
2313 ± 1% -21.9% 1805 ± 0% slabinfo.btrfs_extent_buffer.num_objs
2301 ± 1% -22.1% 1792 ± 0% slabinfo.btrfs_extent_buffer.active_objs
13162 ± 0% -51.8% 6341 ± 0% slabinfo.btrfs_extent_state.num_objs
257 ± 0% -51.9% 123 ± 0% slabinfo.btrfs_extent_state.num_slabs
13152 ± 0% -51.8% 6341 ± 0% slabinfo.btrfs_extent_state.active_objs
257 ± 0% -51.9% 123 ± 0% slabinfo.btrfs_extent_state.active_slabs
715 ± 0% -46.2% 385 ± 5% slabinfo.btrfs_ordered_extent.active_objs
720 ± 0% -43.4% 408 ± 5% slabinfo.btrfs_ordered_extent.num_objs
26591 ± 0% -51.4% 12924 ± 0% slabinfo.btrfs_path.num_objs
949 ± 0% -51.4% 461 ± 0% slabinfo.btrfs_path.active_slabs
949 ± 0% -51.4% 461 ± 0% slabinfo.btrfs_path.num_slabs
26591 ± 0% -51.4% 12924 ± 0% slabinfo.btrfs_path.active_objs
670 ± 8% -39.2% 407 ± 0% slabinfo.ext4_extent_status.num_objs
670 ± 8% -39.2% 407 ± 0% slabinfo.ext4_extent_status.active_objs
503 ± 6% -13.2% 437 ± 8% slabinfo.mnt_cache.active_objs
522 ± 7% -13.4% 452 ± 6% slabinfo.mnt_cache.num_objs
26243 ± 0% -26.8% 19212 ± 0% slabinfo.radix_tree_node.num_objs
26243 ± 0% -26.8% 19212 ± 0% slabinfo.radix_tree_node.active_objs
937 ± 0% -26.8% 685 ± 0% slabinfo.radix_tree_node.active_slabs
937 ± 0% -26.8% 685 ± 0% slabinfo.radix_tree_node.num_slabs
lkp-sb02: Sandy Bridge-EP
Memory: 4G
bay: Pentium D
Memory: 2G
fileio.requests_per_sec
50 ++---------------------------------------------------------------------+
| |
45 *+.*..*...*..*..*..*...*..*..*..*...*..*..*..*..*...*..*..*..*...*..*..*
40 ++ |
| |
35 ++ |
| |
30 ++ |
| |
25 ++ |
20 ++ |
O O O O O |
15 ++ O O O O O O O O O O O O O |
| |
10 ++--------------O------------------------------------------------------+
fileio.time.file_system_outputs
2.6e+06 ++----------------------------------------------------------------+
2.5e+06 *+.*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*..*
| |
2.4e+06 O+ O O O O O O O O O |
2.3e+06 ++ O O O O O O O O |
2.2e+06 ++ |
2.1e+06 ++ |
| |
2e+06 ++ |
1.9e+06 ++ |
1.8e+06 ++ |
1.7e+06 ++ |
| |
1.6e+06 ++ O |
1.5e+06 ++----------------------------------------------------------------+
proc-vmstat.nr_active_file
75000 ++------------------------------------------------------------------+
| |
70000 ++ .*..|
*..*..*..*..*..*...*..*..*..*..*..*..*.. .*.. .*...*..*..*..*. *
| *. *. |
65000 ++ |
| |
60000 ++ |
| O O |
55000 O+ O O O O O O O O O O O O O O O |
| |
| |
50000 ++ O |
| |
45000 ++------------------------------------------------------------------+
proc-vmstat.nr_dirty
1000 ++-------------------------------------------------------------------+
*..*..*..*...*..*..*..*..*..*..*... .*.. .*.. .*..*..*...*..*..*..*
900 ++ *. *. *. |
| |
800 ++ |
| |
700 ++ |
| |
600 ++ |
| |
500 O+ O O O O O O O O O O O O O O O O O |
| |
400 ++ O |
| |
300 ++-------------------------------------------------------------------+
proc-vmstat.nr_slab_reclaimable
12000 ++--------------------------*--*-----*-----*-----*---*-----*--*-----*
| .. *. .. .. *. *. |
*..*..*..*..*..*...*..*..* * * |
11500 ++ |
| |
| |
11000 ++ |
| |
10500 ++ |
| |
| O O O O O O O O |
10000 ++ O O |
O O O O O O O O |
| |
9500 ++-------------O----------------------------------------------------+
proc-vmstat.nr_dirtied
340000 *+-*--*--*--*--*--*--*--*--*--*---*--*--*--*--*--*--*--*--*--*--*--*
| |
320000 ++ |
| O |
300000 O+ O O O O O O O O O O O O O O O O |
| |
280000 ++ |
| |
260000 ++ |
| |
240000 ++ |
| |
220000 ++ |
| |
200000 ++-------------O---------------------------------------------------+
proc-vmstat.nr_written
340000 ++-*-----*--------*------------------*--*--*--*-----*--*--*--*-----*
*. *. *..*. *..*..*..*...*. *. *. |
320000 ++ |
| |
300000 O+ O O O O O O O O O O O O O O O O O |
| |
280000 ++ |
| |
260000 ++ |
| |
240000 ++ |
| |
220000 ++ |
| |
200000 ++-------------O---------------------------------------------------+
proc-vmstat.pgactivate
60000 ++---------------------------------------------------------------*--+
| .. |
55000 *+.*..*..*..*..*...*..*..*..*..*..*..*..*..*..*..*...*..*..*..* *
| |
50000 ++ |
O O O O O O O O O O O O O O O O O |
45000 ++ O |
| |
40000 ++ |
| |
35000 ++ |
| |
30000 ++ O |
| |
25000 ++------------------------------------------------------------------+
meminfo.Active
310000 ++-----------------------------------------------------------------+
300000 ++ *..|
| .*..*..*..*.. .*... .*.. *.. .. *
290000 *+ *..*..*..*..*. *. .*.. .. *..*..*..* |
280000 ++ *. * |
| |
270000 ++ |
260000 ++ |
250000 ++ |
O O O O O O O O O O O O O O O O O |
240000 ++ O |
230000 ++ |
| |
220000 ++ O |
210000 ++-----------------------------------------------------------------+
meminfo.Active(file)
290000 ++-----------------------------------------------------------------+
280000 ++ *..|
| .*..*..*..*..*..*..*..*..*..*... .*.. *..*.. .. *
270000 *+ *. *..*.. .. *..*..* |
260000 ++ * |
| |
250000 ++ |
240000 ++ |
230000 ++ |
O O O O O O O O O O O O O O O O O |
220000 ++ O |
210000 ++ |
| |
200000 ++ O |
190000 ++-----------------------------------------------------------------+
meminfo.Dirty
4000 ++-------------------------------------------------------------------+
*..*..*..*...*..*..*..*..*..*..*... .*.. .*..*..*...*..*..*..*
| *. *..*..*. |
3500 ++ |
| |
| |
3000 ++ |
| |
2500 ++ |
| |
| |
2000 O+ O O O O O O O O O O O O O O O O O |
| |
| |
1500 ++--------------O----------------------------------------------------+
meminfo.Slab
67000 ++------------------------------------------------------------------+
66000 ++ *..*.. .*.. *.. ..*.. .*.. .*..*
| .. *. .. .*. *. *. |
65000 *+.*..*..*..*..*...*..*..* * *. |
64000 ++ |
63000 ++ |
62000 ++ |
| |
61000 ++ |
60000 ++ |
59000 ++ O O O O O O O O O |
58000 ++ O O O O |
O O O O O |
57000 ++ O |
56000 ++------------------------------------------------------------------+
meminfo.SReclaimable
48000 ++--------------------------*--*-----*-----*-----*---*-----*--*-----*
47000 ++ .. *. .. .. *. *. |
*..*..*..*..*..*...*..*..* * * |
46000 ++ |
45000 ++ |
| |
44000 ++ |
43000 ++ |
42000 ++ |
| |
41000 ++ O O O O O O O O |
40000 ++ O O |
O O O O O O O O |
39000 ++ |
38000 ++-------------O----------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
apt-get install ruby
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,
Ying Huang
View attachment "job.yaml" of type "text/plain" (1831 bytes)
View attachment "reproduce" of type "text/plain" (37304 bytes)
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