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2026-07-12 - 19:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 all highest latencies:
System rackbslot5s.osadl.org (updated Sun Jul 12, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4109660995932,22cyclictest9187-21apt-get11:40:011
4109655995647,5cyclictest4141111-21munin-run08:40:020
4109664995245,5cyclictest22883-21kworker/u8:0+events_unbound12:25:192
4109660994737,6cyclictest29865-21sendmail12:40:001
4109660994737,6cyclictest29865-21sendmail12:39:591
4109660994518,7cyclictest4170072-21unixbench_multi10:00:281
4109655994536,5cyclictest4189558-21apt-key11:00:010
4109655994436,4cyclictest0-21swapper/010:55:010
4109660994336,4cyclictest4185902-21idleruntime-cro10:50:001
4109660994229,9cyclictest4176945-21grep10:20:281
4109655994234,5cyclictest17930-21munin-plugin-st12:05:000
4109664994132,6cyclictest4173937-21cron10:15:012
4109655994132,5cyclictest4147935-21grep09:00:010
4109660994033,4cyclictest4120458-21idleruntime-cro07:40:011
4109660994029,7cyclictest0-21swapper/109:25:011
4109660993930,5cyclictest4189310-21apt-get11:00:001
4109668993831,4cyclictest23039-21idleruntime-cro12:20:013
4109668993830,5cyclictest4179031-21kworker/u8:0+events_unbound10:50:003
4109655993827,7cyclictest4149243-21grep09:00:280
4109660993728,6cyclictest4182469-21sh10:40:001
4109660993728,5cyclictest4128726-21tail08:00:261
4109664993625,7cyclictest0-21swapper/207:35:252
4109660993627,4cyclictest0-21swapper/111:45:001
4109655993622,5cyclictest131rcu_preempt11:20:490
4109655993612,4cyclictest151rcuc/009:47:160
4109668993527,4cyclictest0-21swapper/310:40:153
4109668993527,4cyclictest0-21swapper/307:55:173
4109664993528,4cyclictest0-21swapper/211:05:012
4109664993526,4cyclictest0-21swapper/212:05:162
4109655993529,2cyclictest0-21swapper/008:00:130
4109655993528,4cyclictest23023-21sh12:20:010
4109655993517,5cyclictest27207-21ntpq12:30:180
4109668993426,5cyclictest4179031-21kworker/u8:0+events_unbound10:55:033
4109664993427,5cyclictest22883-21kworker/u8:0+events_unbound12:20:192
4109664993427,4cyclictest0-21swapper/209:25:002
4109660993428,4cyclictest4102647-21kworker/u8:1+events_unbound07:24:401
4109660993425,4cyclictest0-21swapper/112:30:151
4109655993422,8cyclictest164-21systemd-journal11:10:020
4109668993326,4cyclictest4120459-21kworker/u8:107:40:013
4109668993326,3cyclictest0-21swapper/309:10:013
4109668993324,6cyclictest4145737-21grep08:50:263
4109668993324,5cyclictest0-21swapper/309:45:003
410966499335,5cyclictest131rcu_preempt11:10:122
4109664993325,4cyclictest0-21swapper/209:35:002
4109664993325,4cyclictest0-21swapper/209:20:012
410965599336,6cyclictest11-21ksoftirqd/011:50:250
4109655993320,7cyclictest131rcu_preempt11:46:460
4109655993316,10cyclictest131rcu_preempt12:39:080
4109655993316,10cyclictest131rcu_preempt12:39:070
4109668993226,3cyclictest0-21swapper/311:40:003
4109668993221,6cyclictest0-21swapper/307:15:023
4109664993226,4cyclictest4102647-21kworker/u8:1+events_unbound07:12:412
4109664993224,5cyclictest0-21swapper/209:50:252
4109664993224,4cyclictest0-21swapper/210:24:532
4109664993224,4cyclictest0-21swapper/210:00:172
4109664993224,4cyclictest0-21swapper/207:25:252
4109664993223,6cyclictest20035-21tune2fs12:10:152
4109664993222,6cyclictest0-21swapper/210:50:272
4109660993224,4cyclictest0-21swapper/112:00:001
4109660993224,4cyclictest0-21swapper/107:30:181
4109655993225,4cyclictest0-21swapper/008:50:270
4109655993221,3cyclictest131rcu_preempt10:15:150
4109655993220,8cyclictest4156021-21grep09:20:280
4109655993212,5cyclictest131rcu_preempt08:15:170
4109655993212,5cyclictest131rcu_preempt08:15:170
4109668993124,4cyclictest0-21swapper/308:45:013
4109668993123,4cyclictest0-21swapper/311:05:253
4109664993125,4cyclictest4139022-21kworker/u8:0+events_unbound08:39:352
410966499311,26cyclictest4189291-21apt-get11:00:002
4109660993123,4cyclictest0-21swapper/109:05:151
4109660993123,4cyclictest0-21swapper/108:10:271
4109660993122,6cyclictest4167120-21auditctl09:55:011
4109660993120,7cyclictest0-21swapper/109:40:011
410965599314,7cyclictest11-21ksoftirqd/012:20:240
410965599314,7cyclictest11-21ksoftirqd/011:35:000
4109655993122,6cyclictest4119156-21tune2fs07:35:160
4109655993121,3cyclictest131rcu_preempt07:34:040
4109655993120,8cyclictest151rcuc/011:07:470
4109668993024,4cyclictest4134039-21kworker/u8:1+events_unbound08:49:353
4109668993024,3cyclictest16469-21systemd12:00:133
4109668993023,4cyclictest4168817-21cron10:00:003
4109668993023,4cyclictest0-21swapper/311:45:273
4109668993019,7cyclictest4161099-21grep09:35:283
410966499302,6cyclictest131rcu_preempt08:20:132
4109664993024,3cyclictest0-21swapper/211:30:282
4109664993023,5cyclictest12586-21kworker/u8:0+events_unbound12:00:132
4109664993022,4cyclictest0-21swapper/211:55:002
4109660993022,4cyclictest0-21swapper/109:00:171
4109660993021,4cyclictest0-21swapper/112:25:161
410965599303,8cyclictest11-21ksoftirqd/009:05:260
4109655993026,2cyclictest0-21swapper/008:05:130
4109655993023,3cyclictest0-21swapper/009:30:270
4109655993022,4cyclictest0-21swapper/009:10:250
4109655993021,6cyclictest0-21swapper/011:25:240
4109655993017,7cyclictest131rcu_preempt10:47:060
4109655993013,10cyclictest131rcu_preempt07:10:240
4109655993011,12cyclictest131rcu_preempt10:55:220
410965599301,10cyclictest11-21ksoftirqd/010:05:180
4109655993010,8cyclictest4094564-1kworker/0:0H+mmc_complete07:30:010
410966499298,5cyclictest131rcu_preempt09:10:112
4109664992922,4cyclictest4112093-21fschecks_time07:15:042
4109664992920,7cyclictest4118373-21kworker/u8:2+events_unbound07:54:252
410966499291,4cyclictest131rcu_preempt07:40:132
4109660992921,4cyclictest0-21swapper/110:50:271
4109660992921,4cyclictest0-21swapper/107:44:211
4109660992921,4cyclictest0-21swapper/107:10:271
4109660992918,6cyclictest0-21swapper/112:20:251
410965599294,8cyclictest11-21ksoftirqd/008:50:010
4109655992922,4cyclictest0-21swapper/008:20:160
4109655992921,6cyclictest0-21swapper/010:00:000
4109655992921,4cyclictest0-21swapper/012:05:250
4109655992920,6cyclictest121ktimers/008:44:280
4109655992920,4cyclictest0-21swapper/010:40:250
4109655992919,3cyclictest131rcu_preempt11:40:240
410965599291,7cyclictest0-21swapper/007:45:150
4109655992917,6cyclictest131rcu_preempt09:27:560
4109655992915,3cyclictest131rcu_preempt10:10:130
4109655992914,9cyclictest0-21swapper/007:51:250
4109655992912,9cyclictest131rcu_preempt10:35:210
4109655992911,4cyclictest131rcu_preempt09:15:130
4109668992822,4cyclictest5764-21munin-plugin-st11:29:593
4109668992822,4cyclictest2052-21kworker/u8:1+events_unbound11:40:113
4109668992821,4cyclictest0-21swapper/311:20:013
4109668992821,4cyclictest0-21swapper/311:20:013
4109668992821,4cyclictest0-21swapper/307:30:263
4109668992821,3cyclictest0-21swapper/310:25:003
4109668992820,4cyclictest0-21swapper/310:50:273
4109664992820,6cyclictest21161-21kworker/u8:1+events_unbound12:15:162
4109664992819,5cyclictest0-21swapper/211:35:242
4109664992819,5cyclictest0-21swapper/209:00:002
4109664992812,11cyclictest311ktimers/209:25:122
4109660992821,4cyclictest0-21swapper/109:45:241
4109660992820,4cyclictest0-21swapper/107:45:241
410965599289,4cyclictest131rcu_preempt10:27:120
410965599289,4cyclictest131rcu_preempt10:27:110
410965599285,8cyclictest11-21ksoftirqd/009:50:190
410965599285,6cyclictest11-21ksoftirqd/007:55:220
410965599284,7cyclictest11-21ksoftirqd/010:30:250
410965599283,8cyclictest11-21ksoftirqd/007:15:030
410965599283,7cyclictest11-21ksoftirqd/010:20:250
410965599283,6cyclictest11-21ksoftirqd/012:10:250
4109655992822,3cyclictest0-21swapper/008:30:000
4109655992818,7cyclictest121ktimers/011:35:380
4109655992814,5cyclictest4114566-21grep07:20:240
4109655992814,3cyclictest0-21swapper/010:00:260
4109655992813,4cyclictest131rcu_preempt09:43:420
4109655992811,10cyclictest131rcu_preempt08:30:130
4109668992720,3cyclictest0-21swapper/311:20:273
4109668992720,3cyclictest0-21swapper/311:05:003
4109660992719,4cyclictest0-21swapper/109:19:401
4109660992719,4cyclictest0-21swapper/108:25:001
4109660992716,7cyclictest0-21swapper/110:15:161
4109660992716,6cyclictest0-21swapper/112:20:001
4109655992717,7cyclictest121ktimers/009:35:160
4109655992710,5cyclictest131rcu_preempt07:40:170
4109668992620,3cyclictest0-21swapper/309:15:003
4109668992615,8cyclictest6634-21cut11:30:243
410966499268,6cyclictest4134039-21kworker/u8:1+events_unbound08:43:092
4109664992619,5cyclictest26401-21kworker/u8:1+events_unbound12:31:512
4109664992619,4cyclictest0-21swapper/208:45:262
4109664992618,5cyclictest0-21swapper/209:55:262
4109664992618,5cyclictest0-21swapper/207:20:272
4109664992617,6cyclictest4192145-21find11:05:232
410966499261,4cyclictest131rcu_preempt11:45:122
4109660992619,4cyclictest4142409-21head08:40:251
4109660992619,3cyclictest0-21swapper/107:55:171
4109660992616,7cyclictest4190766-21grep11:00:251
4109660992615,8cyclictest231ktimers/109:10:111
410966099260,8cyclictest4112100-21fschecks_time07:15:041
410965599266,6cyclictest11-21ksoftirqd/012:25:200
410965599263,8cyclictest11-21ksoftirqd/011:15:250
410965599263,8cyclictest11-21ksoftirqd/011:15:250
410965599263,7cyclictest11-21ksoftirqd/008:10:270
4109655992615,3cyclictest131rcu_preempt11:55:130
4109668992519,3cyclictest4179073-21kthreadd10:30:013
4109668992519,3cyclictest4179073-21kthreadd10:30:013
4109668992518,4cyclictest0-21swapper/312:10:163
4109668992518,3cyclictest0-21swapper/309:20:003
4109668992517,5cyclictest29839-21cron12:39:593
4109668992517,5cyclictest29839-21cron12:39:593
4109668992517,5cyclictest0-21swapper/309:50:153
4109668992517,4cyclictest0-21swapper/311:55:013
4109668992515,7cyclictest4174747-21ntp_states10:15:213
410966499259,3cyclictest131rcu_preempt11:25:142
4109664992519,4cyclictest4127086-21kworker/u8:1+events_unbound08:00:412
4109664992519,3cyclictest4170775-21/usr/sbin/munin10:05:122
4109664992518,5cyclictest4192551-21kworker/u8:3+events_unbound11:18:502
4109664992518,5cyclictest4192551-21kworker/u8:3+events_unbound11:18:502
4109664992518,5cyclictest4185546-21kworker/u8:1+events_unbound10:48:412
4109664992518,5cyclictest4177310-21kworker/u8:2+events_unbound10:27:422
4109664992518,5cyclictest4177310-21kworker/u8:2+events_unbound10:27:422
4109664992518,5cyclictest4102647-21kworker/u8:1+events_unbound07:30:412
4109664992517,4cyclictest0-21swapper/209:05:272
4109664992516,6cyclictest4127086-21kworker/u8:1+events_unbound07:56:302
4109664992512,5cyclictest4147690-21kworker/u8:0+events_unbound09:02:342
4109660992516,6cyclictest19455-21kworker/u8:0+events_unbound12:10:171
4109660992516,5cyclictest0-21swapper/107:30:021
4109660992515,6cyclictest0-21swapper/108:20:001
4109660992515,6cyclictest0-21swapper/108:20:001
4109660992513,7cyclictest0-21swapper/108:05:251
4109668992418,4cyclictest0-21swapper/310:30:293
4109668992418,3cyclictest0-21swapper/308:35:203
4109668992417,4cyclictest4147925-21cron09:00:003
4109668992417,3cyclictest0-21swapper/308:10:003
4109668992416,4cyclictest0-21swapper/312:25:253
4109668992415,6cyclictest0-21swapper/310:10:173
4109664992418,4cyclictest4163140-21kworker/u8:3+events_unbound09:48:352
4109664992417,5cyclictest4192551-21kworker/u8:3+events_unbound11:20:442
4109664992417,5cyclictest4170216-21kworker/u8:1+events_unbound10:17:562
4109664992417,5cyclictest26401-21kworker/u8:1+events_unbound12:35:242
4109664992417,5cyclictest26401-21kworker/u8:1+events_unbound12:35:242
4109664992416,4cyclictest0-21swapper/208:15:262
4109664992416,4cyclictest0-21swapper/208:15:252
4109664992415,6cyclictest311ktimers/208:30:232
4109664992411,9cyclictest0-21swapper/211:55:252
4109660992418,4cyclictest178-21systemd-udevd07:50:401
4109660992417,4cyclictest4168400-21grep09:55:271
4109660992417,4cyclictest4141049-21sshd08:39:331
4109660992416,4cyclictest0-21swapper/108:50:181
4109668992317,3cyclictest0-21swapper/308:30:143
4109668992317,3cyclictest0-21swapper/307:15:053
4109668992316,4cyclictest0-21swapper/310:05:283
4109668992316,4cyclictest0-21swapper/309:00:183
4109668992315,4cyclictest0-21swapper/307:40:183
4109668992313,7cyclictest0-21swapper/307:20:233
4109664992317,4cyclictest4127086-21kworker/u8:1+events_unbound08:10:242
4109664992316,5cyclictest2052-21kworker/u8:1+events_unbound11:41:162
4109664992316,4cyclictest4134039-21kworker/u8:1+events_unbound08:27:532
4109664992311,7cyclictest164-21systemd-journal08:06:402
410966499231,12cyclictest0-21swapper/208:54:382
4109660992317,3cyclictest0-21swapper/108:30:261
4109660992315,5cyclictest0-21swapper/111:05:161
4109660992315,5cyclictest0-21swapper/110:40:161
410966099231,4cyclictest0-21swapper/111:30:271
4109660992314,6cyclictest0-21swapper/111:50:251
410966099231,17cyclictest1879-21tail11:15:261
410966099231,17cyclictest1879-21tail11:15:261
4109668992217,3cyclictest4158609-21fschecks_time09:30:173
4109668992217,3cyclictest0-21swapper/311:10:133
4109668992216,3cyclictest0-21swapper/308:10:173
4109668992216,3cyclictest0-21swapper/307:50:263
4109668992214,5cyclictest4125365-21kworker/u8:0+events_unbound08:04:593
4109668992214,5cyclictest24779-21sed12:25:003
4109668992214,5cyclictest0-21swapper/312:05:263
4109668992212,7cyclictest4164760-21grep09:45:243
4109664992216,3cyclictest438-21cron07:50:002
4109664992216,3cyclictest0-21swapper/209:35:262
4109664992214,5cyclictest0-21swapper/210:35:262
4109664992212,7cyclictest4162598-21cat09:40:222
4109660992215,3cyclictest0-21swapper/112:10:011
4109660992215,3cyclictest0-21swapper/108:50:011
4109660992214,6cyclictest145-21jbd2/mmcblk1p2-810:05:231
4109660992214,5cyclictest0-21swapper/111:25:131
4109660992214,4cyclictest4178593-21tail10:25:231
4109660992214,4cyclictest4178593-21tail10:25:231
4109660992213,4cyclictest0-21swapper/110:10:251
410966099220,3cyclictest131rcu_preempt11:20:121
4109668992115,4cyclictest4182466-21cron10:39:593
4109668992114,5cyclictest391ktimers/307:25:253
4109668992113,5cyclictest0-21swapper/312:00:003
410966899211,11cyclictest0-21swapper/307:46:403
4109668992110,7cyclictest4134304-21idleruntime-cro08:20:013
4109668992110,7cyclictest4134304-21idleruntime-cro08:20:003
4109664992114,5cyclictest311ktimers/210:40:132
4109664992112,6cyclictest4180182-21grep10:30:292
4109660992115,4cyclictest164-21systemd-journal10:33:401
4109660992115,3cyclictest4162090-21cpu09:40:141
4109660992114,4cyclictest645-21runrttasks12:00:261
4109660992113,5cyclictest0-21swapper/109:25:261
4109660992113,4cyclictest0-21swapper/111:45:211
4109660992111,3cyclictest4147690-21kworker/u8:0-ext4-rsv-conversion09:00:011
4109668992013,3cyclictest0-21swapper/309:20:183
4109668992012,4cyclictest0-21swapper/308:25:263
4109668992010,7cyclictest4135244-21grep08:20:233
4109660992014,3cyclictest0-21swapper/111:10:161
4109660992014,3cyclictest0-21swapper/109:30:141
4109668991912,5cyclictest391ktimers/312:30:173
4109668991912,3cyclictest0-21swapper/309:25:253
4109660991913,3cyclictest0-21swapper/108:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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