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2026-08-08 - 11:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack4slot1s.osadl.org (updated Sat Aug 08, 2026 00:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
148752770,4sleep20-21swapper/221:33:582
200092630,3sleep00-21swapper/000:40:010
200092630,3sleep00-21swapper/000:40:010
200092630,3sleep00-21swapper/000:40:010
314762570,4sleep30-21swapper/322:18:583
148952560,3chrt0-21swapper/321:33:593
293582550,3sleep00-21swapper/020:46:410
293582550,3sleep00-21swapper/020:46:410
185882550,2chrt18590-21ls21:43:581
27061995338,11cyclictest0-21swapper/000:03:490
27061995338,11cyclictest0-21swapper/000:03:490
166022500,4sleep016604-21latency21:38:590
166022500,4sleep016604-21latency21:38:590
27061994938,8cyclictest6266-21ntpq00:04:030
53302480,3chrt0-21swapper/222:34:042
53302480,3chrt0-21swapper/222:34:042
27062994739,3cyclictest0-21swapper/100:04:031
30872460,2chrt0-21swapper/321:03:563
132682460,2sleep20-21swapper/221:29:042
222442440,1sleep00-21swapper/020:28:480
135632440,3sleep20-21swapper/220:03:582
194012430,2sleep019588-21gltestperf23:13:550
159262430,1sleep00-21swapper/020:09:060
110372430,3sleep30-21swapper/322:49:053
7972420,3sleep30-21swapper/323:49:073
7972420,3sleep30-21swapper/323:49:073
68522420,3sleep30-21swapper/300:04:273
89142410,2sleep30-21swapper/321:18:563
89142410,2sleep30-21swapper/321:18:563
157102410,1sleep00-21swapper/021:36:540
27062994031,3cyclictest181rcu_preempt22:16:131
27062994031,3cyclictest181rcu_preempt22:16:131
27062994011,4cyclictest281ktimers/121:28:441
118212400,3sleep10-21swapper/100:19:001
118212400,3sleep10-21swapper/100:19:001
60662390,1sleep06061-21grep19:43:580
60662390,1sleep06061-21grep19:43:580
27062993932,4cyclictest0-21swapper/100:03:541
221462390,2chrt22144-21timerandwakeup23:19:050
221462390,2chrt22144-21timerandwakeup23:19:050
221462390,2chrt22144-21timerandwakeup23:19:050
2706599382,29cyclictest5464-21chrt00:03:503
2706599382,29cyclictest5464-21chrt00:03:503
27062993815,5cyclictest271rcuc/120:07:201
27062993727,3cyclictest181rcu_preempt20:26:541
27062993727,3cyclictest181rcu_preempt20:26:541
27062993632,2cyclictest0-21swapper/100:03:441
27062993629,5cyclictest27301-21sshd22:08:531
327562350,2sleep032758-21if_err_wlan023:48:590
327562350,2sleep032758-21if_err_wlan023:48:590
27062993528,5cyclictest28892-21threads20:44:051
27062993528,5cyclictest28892-21threads20:44:051
27062993519,7cyclictest90-1pr/ttyS021:12:131
27062993519,7cyclictest90-1pr/ttyS021:12:131
78722340,1sleep00-21swapper/022:43:470
78722340,1sleep00-21swapper/022:43:470
27062993324,7cyclictest24832-21netstat20:34:001
177012330,2sleep017702-21/usr/sbin/munin23:08:560
166462330,3sleep0171ktimers/020:13:540
2706299327,7cyclictest281ktimers/100:31:471
27062993226,4cyclictest749-21runrttasks23:48:571
27062993226,4cyclictest749-21runrttasks23:48:571
27062993225,5cyclictest16821-21fschecks_count20:13:551
27062993222,4cyclictest181rcu_preempt23:00:061
27062993222,4cyclictest181rcu_preempt23:00:061
27062993221,4cyclictest181rcu_preempt20:00:251
27062993221,4cyclictest181rcu_preempt20:00:251
27062993217,5cyclictest773-21apache222:39:001
27062993217,5cyclictest773-21apache222:39:001
27062993216,8cyclictest90-1pr/ttyS021:58:451
27062993216,8cyclictest90-1pr/ttyS021:58:451
27061993226,4cyclictest1346-21avahi-daemon00:34:050
27061993225,5cyclictest3407-21latency_hist23:58:420
27061993225,5cyclictest27060-21cyclictest19:56:250
27061993224,6cyclictest11264-21fschecks_time19:58:550
27061993224,6cyclictest11264-21fschecks_time19:58:550
2706299316,5cyclictest271rcuc/121:23:461
2706299316,5cyclictest271rcuc/121:23:461
27062993124,4cyclictest281ktimers/123:47:451
27062993117,3cyclictest90-1pr/ttyS000:38:551
27062993117,3cyclictest90-1pr/ttyS000:38:551
27062993117,3cyclictest90-1pr/ttyS000:38:551
2706299311,6cyclictest700-21192.168.115.40-manager23:32:581
27061993126,4cyclictest18809-21processes21:44:030
27061993125,5cyclictest11980-21cut22:53:550
27061993124,5cyclictest24796-21latency_hist23:28:480
27061993124,5cyclictest24796-21latency_hist23:28:480
27062993025,3cyclictest14713-21kernelversion21:33:571
27062993023,5cyclictest26223-21cut20:38:561
27062993023,5cyclictest26223-21cut20:38:561
27062993021,7cyclictest4708-21kernelversion22:33:571
27062993021,7cyclictest4708-21kernelversion22:33:571
27062993020,3cyclictest181rcu_preempt19:42:281
27062993020,3cyclictest181rcu_preempt19:42:281
27062993016,4cyclictest181rcu_preempt23:23:021
27062993016,4cyclictest181rcu_preempt23:23:021
27062993016,4cyclictest181rcu_preempt23:23:021
27061993023,5cyclictest10698-21cut21:23:550
27061993021,7cyclictest28794-21fschecks_time23:38:550
27061993021,7cyclictest28794-21fschecks_time23:38:550
27061993021,7cyclictest28794-21fschecks_time23:38:550
99802290,2sleep010042-21/usr/sbin/munin00:14:010
99802290,2sleep010042-21/usr/sbin/munin00:14:010
2706299294,2cyclictest271rcuc/120:54:571
27062992924,4cyclictest10798-21grep19:58:431
27062992923,4cyclictest281ktimers/123:37:241
27062992923,4cyclictest281ktimers/123:37:241
27062992922,4cyclictest0-21swapper/122:03:561
27062992920,2cyclictest181rcu_preempt23:55:411
27061992922,6cyclictest749-21runrttasks23:34:040
27061992922,6cyclictest749-21runrttasks23:34:040
27061992921,6cyclictest8231-21cut22:43:550
237722290,3sleep30-21swapper/323:24:023
237722290,3sleep30-21swapper/323:24:023
27062992824,2cyclictest0-21swapper/123:43:421
27062992824,2cyclictest0-21swapper/123:43:421
27062992824,2cyclictest0-21swapper/123:43:421
27062992823,3cyclictest281ktimers/121:43:431
27062992823,3cyclictest281ktimers/121:43:431
27062992822,4cyclictest281ktimers/123:17:561
27062992822,4cyclictest17555-21fschecks_count23:08:551
27062992815,4cyclictest90-1pr/ttyS023:28:121
27062992815,4cyclictest90-1pr/ttyS023:28:121
27062992815,2cyclictest181rcu_preempt21:05:271
27062992810,11cyclictest29-21ksoftirqd/122:48:441
27061992823,3cyclictest32686-21latency_hist22:23:430
27061992823,3cyclictest27060-21cyclictest00:18:570
27061992823,3cyclictest27060-21cyclictest00:18:570
27061992822,5cyclictest6928-21cut21:13:550
27061992822,5cyclictest6928-21cut21:13:550
27061992821,5cyclictest25348-21head20:34:050
259652280,3sleep30-21swapper/322:03:583
246152280,3sleep30-21swapper/320:33:583
157152280,3sleep20-21swapper/223:03:552
157152280,3sleep20-21swapper/223:03:552
56162270,2chrt0-21swapper/319:43:533
56162270,2chrt0-21swapper/319:43:533
2706499274,15cyclictest0-21swapper/200:04:032
27062992723,3cyclictest90-1pr/ttyS022:49:071
27062992722,3cyclictest0-21swapper/121:28:541
27062992721,4cyclictest27060-21cyclictest20:19:571
27062992721,4cyclictest27060-21cyclictest20:19:571
27062992720,5cyclictest281ktimers/120:30:161
27062992720,2cyclictest181rcu_preempt23:04:521
27062992720,2cyclictest181rcu_preempt23:04:521
27062992719,6cyclictest17505-21netstat00:34:021
27062992718,7cyclictest3219-21sendmail_mailqu22:29:021
27062992718,5cyclictest281ktimers/121:15:521
27062992718,5cyclictest281ktimers/121:15:521
2706299271,5cyclictest700-21192.168.115.40-manager22:01:291
2706299271,5cyclictest700-21192.168.115.40-manager22:01:291
27061992721,3cyclictest0-21swapper/000:23:590
27061992721,3cyclictest0-21swapper/000:23:590
27061992720,5cyclictest9294-21ntp_kernel_pll_21:19:010
27061992720,5cyclictest9294-21ntp_kernel_pll_21:19:010
27061992720,5cyclictest30708-21fschecks_time23:43:560
27061992720,5cyclictest28718-21sshd22:10:530
27061992719,6cyclictest16497-21grep23:04:040
27061992719,6cyclictest16497-21grep23:04:040
27061992719,6cyclictest14174-21unixbench_singl20:04:040
36342260,4sleep20-21swapper/222:29:062
2706299263,5cyclictest700-21192.168.115.40-manager19:45:551
2706299263,5cyclictest700-21192.168.115.40-manager19:45:551
2706299263,3cyclictest281ktimers/120:10:571
27062992620,4cyclictest0-21swapper/100:14:031
27062992620,4cyclictest0-21swapper/100:14:031
27062992617,2cyclictest181rcu_preempt21:03:461
27062992617,2cyclictest181rcu_preempt21:03:461
27062992617,2cyclictest181rcu_preempt20:49:091
27062992617,2cyclictest181rcu_preempt20:49:091
2706299261,4cyclictest281ktimers/100:10:091
27062992614,3cyclictest90-1pr/ttyS019:53:461
27061992621,4cyclictest3661-21fschecks_count19:38:550
27061992621,4cyclictest3661-21fschecks_count19:38:550
27061992620,4cyclictest0-21swapper/021:29:050
27061992619,5cyclictest5492-21needreboot21:09:000
27061992619,5cyclictest5492-21needreboot21:09:000
27062992520,2cyclictest0-21swapper/100:23:541
27062992520,2cyclictest0-21swapper/100:23:541
27062992519,4cyclictest90-1pr/ttyS022:54:021
27062992515,4cyclictest90-1pr/ttyS022:18:541
27061992520,3cyclictest0-21swapper/021:49:040
27061992520,3cyclictest0-21swapper/020:28:560
27061992519,3cyclictest0-21swapper/021:03:570
27061992519,3cyclictest0-21swapper/019:53:430
27061992518,5cyclictest26929-21sshd22:06:530
27061992516,7cyclictest2730-21sort22:28:550
27062992415,2cyclictest181rcu_preempt21:49:441
27062992414,2cyclictest181rcu_preempt22:26:131
27062992414,2cyclictest181rcu_preempt22:26:131
27061992419,3cyclictest0-21swapper/022:24:020
27061992419,3cyclictest0-21swapper/022:24:020
27061992415,7cyclictest10043-21cut22:48:550
27061992319,3cyclictest595-21sshd20:50:540
27061992319,3cyclictest595-21sshd20:50:540
27061992318,3cyclictest0-21swapper/020:24:050
27061992316,5cyclictest4503-21gltestperf22:33:550
27061992316,5cyclictest4503-21gltestperf22:33:550
27061992316,5cyclictest0-21swapper/022:59:050
27061992316,5cyclictest0-21swapper/022:59:050
27061992315,6cyclictest8464-21sort00:09:040
27061992216,4cyclictest0-21swapper/000:28:560
27065992113,5cyclictest72692sleep321:13:583
27065992113,5cyclictest72692sleep321:13:583
27061992116,3cyclictest0-21swapper/022:00:130
27061992116,3cyclictest0-21swapper/022:00:130
27061992116,3cyclictest0-21swapper/020:58:430
27061992114,5cyclictest26156-21fschecks_count20:38:560
27061992114,5cyclictest26156-21fschecks_count20:38:560
27061992112,7cyclictest729-21dbus-daemon21:03:430
27061992112,7cyclictest729-21dbus-daemon21:03:430
27061992112,7cyclictest18764-21fschecks_time20:18:570
27061992112,7cyclictest18764-21fschecks_time20:18:570
229492210,1sleep3431rcuc/321:54:053
229492210,1sleep3431rcuc/321:54:053
27061992016,2cyclictest0-21swapper/022:14:000
27061992016,2cyclictest0-21swapper/022:14:000
27061992015,3cyclictest0-21swapper/023:28:550
203832200,2chrt0-21swapper/223:14:042
48932190,3sleep20-21swapper/221:08:542
48932190,3sleep20-21swapper/221:08:542
27065991913,4cyclictest268552sleep320:39:043
27065991913,4cyclictest268552sleep320:39:043
27061991912,4cyclictest0-21swapper/021:54:030
27061991912,4cyclictest0-21swapper/021:54:030
2706599181,11cyclictest17519-21taskset23:08:543
2706499183,11cyclictest109352sleep219:58:472
27064991811,4cyclictest0-21swapper/221:39:052
27064991811,4cyclictest0-21swapper/221:39:052
237192180,3sleep20-21swapper/221:58:552
237192180,3sleep20-21swapper/221:58:552
2706599171,11cyclictest16907-21taskset20:13:563
2706599171,11cyclictest11267-21taskset21:24:023
2706499177,7cyclictest30966-21chrt22:18:492
2706499177,7cyclictest30966-21chrt22:18:492
2706599169,4cyclictest217682sleep323:19:003
2706599169,4cyclictest217682sleep323:19:003
2706599169,4cyclictest217682sleep323:19:003
2706599163,9cyclictest0-21swapper/322:55:493
2706599163,9cyclictest0-21swapper/322:09:533
2706599162,10cyclictest0-21swapper/322:58:533
2706599162,10cyclictest0-21swapper/322:58:533
2706599161,11cyclictest20503-21taskset23:14:053
2706599161,11cyclictest0-21swapper/320:43:533
2706599161,11cyclictest0-21swapper/320:43:533
2706599161,10cyclictest15135-21taskset00:28:543
2706599161,10cyclictest12026-21taskset19:59:043
2706599161,10cyclictest12026-21taskset19:59:043
2706599160,12cyclictest4080-21chrt19:38:583
2706599160,12cyclictest4080-21chrt19:38:583
2706499161,13cyclictest90692sleep200:13:432
2706499161,11cyclictest7913-21taskset22:43:492
2706499161,11cyclictest7913-21taskset22:43:492
2706499161,11cyclictest22156-21taskset20:28:462
2706499161,11cyclictest22156-21taskset20:28:462
27064991610,4cyclictest55232sleep200:03:542
27064991610,4cyclictest55232sleep200:03:542
27064991610,4cyclictest24942sleep223:54:012
17452160,3sleep20-21swapper/222:24:072
17452160,3sleep20-21swapper/222:24:072
2706599158,4cyclictest170522sleep300:33:573
2706599154,8cyclictest602-21chrt22:23:563
2706599154,8cyclictest602-21chrt22:23:563
2706599151,9cyclictest13437-21taskset21:29:053
2706599151,11cyclictest19928-21chrt21:48:553
2706599151,11cyclictest14723-21chrt00:28:423
2706599151,11cyclictest14723-21chrt00:28:423
2706599151,10cyclictest9544-21chrt00:13:553
2706599151,10cyclictest9544-21chrt00:13:553
2706599151,10cyclictest7463-21chrt22:40:083
2706599151,10cyclictest7463-21chrt22:40:083
2706599151,10cyclictest4928-21taskset21:08:553
2706599151,10cyclictest4928-21taskset21:08:553
2706599151,10cyclictest27669-21chrt23:34:033
2706599151,10cyclictest27669-21chrt23:34:033
2706599151,10cyclictest22369-21chrt20:28:553
2706599151,10cyclictest15752-21chrt20:09:053
2706599151,10cyclictest1108-21taskset20:58:543
2706599151,10cyclictest1108-21taskset20:58:543
2706599151,10cyclictest0-21swapper/321:58:563
2706599151,10cyclictest0-21swapper/321:58:563
2706599150,10cyclictest25397-21taskset23:28:573
2706499151,12cyclictest13447-21chrt22:58:442
2706499151,11cyclictest5505-21chrt19:43:522
2706499151,11cyclictest28499-21chrt23:38:482
2706499151,11cyclictest28499-21chrt23:38:482
27064991510,3cyclictest253002chrt23:28:562
232472151,2sleep20-21swapper/221:57:472
232472151,2sleep20-21swapper/221:57:472
165362151,2sleep20-21swapper/200:33:172
2706599141,9cyclictest9898-21taskset19:54:023
2706599141,9cyclictest8542-21chrt19:49:073
2706599141,9cyclictest8104-21chrt22:43:543
2706599141,9cyclictest2519-21taskset23:54:013
2706599141,9cyclictest19477-21chrt20:19:063
2706599141,9cyclictest19477-21chrt20:19:063
2706599141,9cyclictest16211-21chrt23:04:003
2706599141,9cyclictest16211-21chrt23:04:003
2706599141,9cyclictest0-21swapper/321:45:533
2706599141,8cyclictest0-21swapper/320:53:543
2706599141,10cyclictest0-21swapper/300:08:523
2706499149,3cyclictest71592sleep221:13:562
2706499149,3cyclictest71592sleep221:13:562
2706499149,3cyclictest169152chrt00:33:562
2706499149,3cyclictest0-21swapper/223:50:472
2706499149,3cyclictest0-21swapper/223:50:472
2706499149,3cyclictest0-21swapper/222:07:582
2706499147,5cyclictest351rcuc/220:58:132
2706499141,9cyclictest27549-21chrt22:08:562
2706499141,9cyclictest0-21swapper/222:18:542
2706499141,9cyclictest0-21swapper/200:19:552
2706499141,9cyclictest0-21swapper/200:19:552
2706499141,11cyclictest4194-21chrt21:04:082
2706499141,10cyclictest6663-21chrt19:44:042
2706499141,10cyclictest6663-21chrt19:44:042
2706499141,10cyclictest30048-21taskset20:48:562
2706499141,10cyclictest30048-21taskset20:48:562
2706499141,10cyclictest27264-21chrt20:39:072
2706499141,10cyclictest27264-21chrt20:39:072
2706499141,10cyclictest23738-21chrt23:24:012
2706499141,10cyclictest23738-21chrt23:24:012
2706499141,10cyclictest18772-21chrt20:18:572
2706499141,10cyclictest18772-21chrt20:18:572
2706499141,10cyclictest11340-21chrt22:51:292
27064991410,3cyclictest0-21swapper/219:50:192
42342131,4sleep20-21swapper/219:39:022
2706599131,9cyclictest29076-21chrt23:38:583
2706599131,9cyclictest29076-21chrt23:38:583
2706599131,9cyclictest29076-21chrt23:38:583
2706599131,9cyclictest19414-21chrt00:39:033
2706599131,9cyclictest19414-21chrt00:39:033
2706599131,9cyclictest19414-21chrt00:39:033
2706599131,8cyclictest0-21swapper/320:23:553
2706599131,8cyclictest0-21swapper/320:23:553
2706599130,10cyclictest30191-21taskset20:48:573
2706599130,10cyclictest30191-21taskset20:48:573
2706499138,3cyclictest93362chrt22:44:372
2706499138,3cyclictest238562chrt20:33:082
2706499138,3cyclictest101782chrt21:23:132
2706499138,3cyclictest101782chrt21:23:132
2706499138,3cyclictest0-21swapper/220:10:102
2706499134,7cyclictest351rcuc/200:40:322
2706499134,7cyclictest351rcuc/200:40:322
2706499134,7cyclictest351rcuc/200:40:322
2706499131,9cyclictest28626-21chrt20:44:022
2706499131,9cyclictest28626-21chrt20:44:022
2706499131,9cyclictest24847-21chrt20:34:012
2706499131,9cyclictest18241-21chrt21:43:552
2706499131,9cyclictest17477-21chrt23:08:532
2706499131,8cyclictest30594-21chrt23:43:552
2706499131,8cyclictest16643-21chrt20:13:512
2706499131,8cyclictest14115-21taskset22:58:572
2706499131,8cyclictest14115-21taskset22:58:572
2706499131,11cyclictest0-21swapper/219:58:532
2706499131,11cyclictest0-21swapper/219:58:532
2706499130,9cyclictest1026-21chrt20:58:492
2706499130,9cyclictest1026-21chrt20:58:492
124562131,2sleep30-21swapper/300:19:233
124562131,2sleep30-21swapper/300:19:233
2706599121,9cyclictest17395-21chrt21:39:383
2706599121,9cyclictest17395-21chrt21:39:383
2706599121,8cyclictest5839-21chrt22:38:113
2706599121,8cyclictest5839-21chrt22:38:113
2706599121,8cyclictest2351-21chrt22:28:513
2706599121,8cyclictest0-21swapper/322:13:553
2706599121,8cyclictest0-21swapper/322:13:553
2706599121,6cyclictest0-21swapper/320:03:523
2706599120,9cyclictest31775-21chrt23:44:283
2706499127,3cyclictest107152chrt00:15:552
2706499127,3cyclictest107152chrt00:15:552
2706499121,9cyclictest21356-21chrt21:52:242
2706499121,9cyclictest14514-21chrt00:26:122
2706499121,9cyclictest14514-21chrt00:26:122
2706499121,8cyclictest28585-21chrt23:38:522
2706499121,8cyclictest28585-21chrt23:38:522
2706499121,8cyclictest28585-21chrt23:38:522
2706499121,8cyclictest21759-21chrt23:18:592
2706499121,8cyclictest21759-21chrt23:18:592
2706499121,8cyclictest21759-21chrt23:18:592
2706499121,8cyclictest10954-21chrt21:23:572
plot10:48:588
setyrange[0.8:*]5
setylabel"Numberoflatencysamples"6
setxrange[0:400]4
setxlabel"Latencyus-Maximumusplottedon2
settitle"Latencyrack4slot1s"0
setterminalpbmcolor1
setoutput"r4s1s.ppm"7
setlogscaley3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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