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2026-07-17 - 21:24

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 the 376 highest latencies:
System rackbslot5s.osadl.org (updated Fri Jul 17, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
657489995442,5cyclictest702595-21kworker/u8:0+events_unbound09:34:373
657489995245,5cyclictest725107-21kworker/u8:2+events_unbound10:29:483
657480995041,5cyclictest723469-21munin-plugin-st10:20:001
657476995038,9cyclictest121ktimers/007:55:140
657476995022,4cyclictest0-21swapper/012:00:240
657480994940,5cyclictest730276-21cron10:40:001
657489994832,5cyclictest131rcu_preempt11:00:223
657476994736,7cyclictest666526-21grep07:30:270
657480994635,7cyclictest754124-21grep11:45:261
657476994617,6cyclictest747085-21grep11:25:250
657476994617,6cyclictest747085-21grep11:25:250
657480994535,7cyclictest675492-21sendmail08:00:001
657489994436,6cyclictest664356-21kworker/u8:1+events_unbound07:29:093
657489994337,4cyclictest723362-21kworker/u8:1+events_unbound10:19:473
657489994336,5cyclictest664356-21kworker/u8:1+events_unbound07:39:103
657489994334,7cyclictest671792-21kworker/u8:2+events_unbound08:04:153
657489994236,4cyclictest706637-21kworker/u8:1+events_unbound09:39:393
657489994229,9cyclictest391ktimers/307:30:133
657476994234,4cyclictest663358-21munin-plugin-st07:25:000
657476994232,7cyclictest690379-21unixbench_multi08:40:260
657489994135,4cyclictest743811-21kworker/u8:2+events_unbound11:29:583
657489994135,4cyclictest743811-21kworker/u8:2+events_unbound11:29:583
657489994125,5cyclictest673503-21kworker/u8:1-events_freezable_power_07:54:473
657480994133,5cyclictest668674-21munin-plugin-st07:40:011
657480994132,5cyclictest0-21swapper/110:00:001
657476994113,7cyclictest0-21swapper/010:30:250
657476994113,7cyclictest0-21swapper/010:30:250
657489994030,6cyclictest0-21swapper/309:30:003
657489994029,7cyclictest391ktimers/307:10:123
657480994027,8cyclictest438-21cron10:10:001
657476994029,8cyclictest121ktimers/010:10:140
657489993921,5cyclictest131rcu_preempt11:30:243
657476993929,6cyclictest660994-21grep07:15:270
657489993832,4cyclictest764551-21kworker/u8:2+events_unbound12:26:403
657489993832,4cyclictest726864-21kworker/u8:3+events_unbound10:44:503
657489993827,6cyclictest733275-21grep10:45:263
657489993819,3cyclictest0-21swapper/312:15:073
657489993819,3cyclictest0-21swapper/312:15:063
657489993819,12cyclictest131rcu_preempt09:05:163
657489993817,10cyclictest131rcu_preempt10:36:493
65748099382,13cyclictest0-21swapper/107:45:131
657489993731,4cyclictest721621-21kworker/u8:0+events_unbound10:14:453
657489993731,4cyclictest718195-21kworker/u8:1+events_unbound10:04:423
657476993729,5cyclictest695294-21runrttasks08:55:260
657476993728,6cyclictest735397-21cron10:55:010
657489993630,4cyclictest754210-21kworker/u8:0+events_unbound12:20:043
657489993630,4cyclictest754210-21kworker/u8:0+events_unbound12:20:043
657489993628,4cyclictest391ktimers/311:45:123
657489993621,5cyclictest712995-21kworker/u8:1-events_freezable_power_09:57:443
657489993619,10cyclictest131rcu_preempt11:05:253
657489993614,10cyclictest131rcu_preempt12:13:013
657480993630,4cyclictest712995-21kworker/u8:1+events_unbound09:49:421
657480993610,8cyclictest24-21ksoftirqd/110:30:131
657480993610,8cyclictest24-21ksoftirqd/110:30:131
657489993526,5cyclictest0-21swapper/309:00:153
657489993523,5cyclictest131rcu_preempt12:37:563
657489993523,4cyclictest131rcu_preempt10:30:213
657489993523,4cyclictest131rcu_preempt10:30:213
657489993521,4cyclictest0-21swapper/311:52:103
657489993518,5cyclictest131rcu_preempt11:15:013
657489993518,5cyclictest131rcu_preempt10:59:373
657489993516,5cyclictest131rcu_preempt10:50:223
657489993516,4cyclictest131rcu_preempt11:55:023
657489993515,3cyclictest0-21swapper/310:20:343
657489993514,13cyclictest131rcu_preempt08:55:153
657485993527,4cyclictest0-21swapper/211:45:152
657485993527,4cyclictest0-21swapper/211:25:002
657485993525,7cyclictest53-21kcompactd011:30:002
657485993525,7cyclictest53-21kcompactd011:30:002
657476993528,4cyclictest0-21swapper/008:25:250
657476993528,3cyclictest0-21swapper/012:10:000
65748999349,15cyclictest40-21ksoftirqd/309:20:013
657489993417,4cyclictest131rcu_preempt11:42:283
657489993416,10cyclictest131rcu_preempt08:45:013
657489993415,4cyclictest131rcu_preempt09:52:403
657489993415,3cyclictest0-21swapper/307:24:393
657489993414,4cyclictest131rcu_preempt09:40:153
657489993413,12cyclictest40-21ksoftirqd/307:20:013
657480993426,4cyclictest0-21swapper/112:10:271
657480993426,4cyclictest0-21swapper/109:40:021
657480993423,7cyclictest0-21swapper/111:30:011
657480993423,7cyclictest0-21swapper/111:30:001
657476993427,4cyclictest0-21swapper/011:50:000
657476993427,4cyclictest0-21swapper/011:20:000
657489993324,6cyclictest689151-21sendmail08:40:003
657489993317,4cyclictest131rcu_preempt08:05:313
657489993316,4cyclictest131rcu_preempt12:30:053
657489993316,4cyclictest131rcu_preempt08:28:503
657489993315,9cyclictest131rcu_preempt11:18:573
657489993315,4cyclictest131rcu_preempt08:11:563
657489993314,9cyclictest131rcu_preempt11:20:233
657489993314,4cyclictest131rcu_preempt08:45:193
657489993313,9cyclictest131rcu_preempt12:09:283
657485993322,8cyclictest668673-21grep07:40:022
657480993324,6cyclictest0-21swapper/111:25:011
657480993324,5cyclictest0-21swapper/111:05:011
657480993323,6cyclictest764838-21sendmail12:20:001
657480993323,6cyclictest764838-21sendmail12:20:001
657480993323,6cyclictest0-21swapper/108:50:281
65748999326,8cyclictest40-21ksoftirqd/309:50:023
657489993225,5cyclictest678732-21kworker/u8:0+events_unbound08:32:403
657489993218,5cyclictest699136-21kworker/u8:3+events_unbound09:14:183
657489993214,9cyclictest131rcu_preempt07:58:533
657489993214,4cyclictest131rcu_preempt08:50:553
657489993214,11cyclictest131rcu_preempt08:20:223
657489993212,5cyclictest131rcu_preempt09:20:213
657485993225,3cyclictest0-21swapper/209:05:272
657485993223,6cyclictest0-21swapper/210:30:262
657485993223,6cyclictest0-21swapper/210:30:262
657480993225,4cyclictest0-21swapper/109:05:011
657480993225,4cyclictest0-21swapper/107:20:021
657480993224,4cyclictest0-21swapper/111:30:171
657480993224,4cyclictest0-21swapper/110:40:151
657480993224,4cyclictest0-21swapper/108:45:021
657480993218,9cyclictest1-21systemd08:19:171
657480993218,9cyclictest1-21systemd08:19:171
657480993217,5cyclictest756519-21kworker/u8:2+events_unbound12:00:111
657489993115,5cyclictest131rcu_preempt10:08:323
657489993114,4cyclictest131rcu_preempt08:17:173
657489993114,4cyclictest131rcu_preempt08:17:173
657489993110,14cyclictest40-21ksoftirqd/311:35:153
657485993120,7cyclictest736682-21grep10:55:272
657480993124,5cyclictest712995-21kworker/u8:1+events_unbound09:50:401
657480993123,4cyclictest0-21swapper/112:35:251
657480993113,5cyclictest659045-21kworker/u8:2+events_unbound07:29:231
657476993125,3cyclictest0-21swapper/007:50:290
657476993124,4cyclictest0-21swapper/007:35:270
657476993123,3cyclictest0-21swapper/010:00:110
657476993118,9cyclictest692130-21grep08:45:260
657489993018,4cyclictest131rcu_preempt07:42:593
657489993014,5cyclictest131rcu_preempt12:05:003
657485993023,4cyclictest661442-21sendmail07:20:002
657485993023,4cyclictest0-21swapper/208:55:012
657485993019,7cyclictest0-21swapper/208:35:262
657480993022,4cyclictest0-21swapper/112:20:151
657480993022,4cyclictest0-21swapper/112:20:151
657480993020,6cyclictest0-21swapper/111:00:001
657480993012,9cyclictest24-21ksoftirqd/108:33:321
657476993022,4cyclictest704096-21grep09:20:250
657476993019,8cyclictest701081-21audit_send_reply09:15:000
657489992915,4cyclictest131rcu_preempt07:47:403
657485992922,3cyclictest0-21swapper/209:50:152
657485992921,4cyclictest0-21swapper/207:20:172
657485992919,7cyclictest751188-21ls11:40:002
657485992916,10cyclictest657469-21cyclictest09:35:122
657480992918,5cyclictest664356-21kworker/u8:1+events_unbound07:40:271
657485992819,6cyclictest756519-21kworker/u8:2+events_unbound11:56:402
657485992818,7cyclictest716652-21run-parts10:00:002
657480992817,5cyclictest655538-21kworker/u8:0+events_unbound07:13:461
657480992816,7cyclictest0-21swapper/109:25:001
657480992814,4cyclictest664356-21kworker/u8:1+events_unbound07:33:581
657480992812,6cyclictest131rcu_preempt11:15:461
65748099281,12cyclictest0-21swapper/112:07:311
657476992817,7cyclictest204-21dbus-daemon09:59:410
657485992720,4cyclictest695943-21cron09:00:012
657485992720,4cyclictest0-21swapper/212:15:252
657485992720,4cyclictest0-21swapper/212:15:252
657485992719,4cyclictest0-21swapper/212:35:152
657485992718,6cyclictest721350-21grep10:10:272
657485992717,8cyclictest311ktimers/209:15:132
65748599271,4cyclictest131rcu_preempt10:45:142
65748099273,4cyclictest131rcu_preempt10:20:131
657480992721,4cyclictest733420-21kworker/u8:1+events_unbound10:48:401
657480992716,7cyclictest0-21swapper/109:45:011
657480992713,6cyclictest24-21ksoftirqd/108:05:151
657476992717,7cyclictest702815-21sendmail09:20:000
657485992620,4cyclictest747496-21kworker/u8:1+events_unbound11:45:022
657485992620,3cyclictest0-21swapper/211:30:232
657485992619,4cyclictest0-21swapper/207:55:272
657480992620,4cyclictest769718-21kworker/u8:0+events_unbound12:32:411
657480992620,4cyclictest737085-21kworker/u8:2+events_unbound11:10:491
657480992619,5cyclictest699136-21kworker/u8:3+events_unbound09:28:341
657480992619,4cyclictest0-21swapper/108:35:261
657480992619,3cyclictest0-21swapper/111:40:001
657480992618,5cyclictest0-21swapper/110:15:001
657480992618,4cyclictest0-21swapper/111:10:001
657480992617,6cyclictest752458-21grep11:40:261
65748099260,4cyclictest131rcu_preempt07:50:141
657476992619,4cyclictest664789-21tail07:25:280
657476992619,3cyclictest0-21swapper/012:25:240
657476992618,5cyclictest0-21swapper/011:50:240
657476992617,6cyclictest661038-1kworker/0:2H+mmc_complete08:20:010
657476992617,6cyclictest661038-1kworker/0:2H+mmc_complete08:20:000
657476992615,8cyclictest737131-21tr11:00:010
65747699260,4cyclictest0-21swapper/011:20:220
657485992519,3cyclictest0-21swapper/211:15:162
657485992518,5cyclictest766334-21kworker/u8:1+events_unbound12:25:062
657485992517,5cyclictest0-21swapper/210:50:262
657485992517,4cyclictest0-21swapper/210:05:172
657485992516,4cyclictest0-21swapper/209:15:002
657485992514,7cyclictest0-21swapper/210:20:262
657480992517,5cyclictest661407-21kworker/u8:0+events_unbound07:21:551
657480992515,6cyclictest0-21swapper/108:25:161
657480992514,7cyclictest0-21swapper/110:00:251
65747699251,9cyclictest751182-21sendmail11:40:000
657476992519,3cyclictest0-21swapper/009:00:250
65747699251,4cyclictest7325912uname10:45:190
657485992418,3cyclictest0-21swapper/208:30:232
657485992418,3cyclictest0-21swapper/208:20:262
657485992418,3cyclictest0-21swapper/207:30:272
65748599241,5cyclictest131rcu_preempt12:30:102
65748099249,3cyclictest0-21swapper/111:50:141
657480992418,4cyclictest764551-21kworker/u8:2+events_unbound12:28:581
657480992417,5cyclictest756519-21kworker/u8:2+events_unbound11:55:551
657480992417,5cyclictest702595-21kworker/u8:0+events_unbound09:30:121
657480992415,5cyclictest683605-21grep08:20:261
657480992411,7cyclictest131rcu_preempt09:05:271
65748099241,12cyclictest0-21swapper/108:55:171
65747699242,18cyclictest739062-21taskset11:05:120
657476992417,4cyclictest0-21swapper/011:55:270
657476992415,6cyclictest53-21kcompactd010:35:240
657476992414,8cyclictest706424-21sed09:30:010
657476992413,8cyclictest0-21swapper/009:10:000
65747699241,21cyclictest0-21swapper/007:15:000
65747699241,19cyclictest709834-21idleruntime-cro09:40:010
65747699241,19cyclictest0-21swapper/011:03:170
65747699241,19cyclictest0-21swapper/008:33:400
657485992315,5cyclictest0-21swapper/207:45:172
657485992315,4cyclictest0-21swapper/208:00:302
657485992314,6cyclictest311ktimers/207:50:262
657485992313,7cyclictest738978-21sed11:05:012
657485992313,7cyclictest707187-21ntpq09:30:202
657480992316,5cyclictest675239-21kworker/u8:0+events_unbound08:00:171
657480992315,6cyclictest725107-21kworker/u8:2+events_unbound10:25:221
65748099231,12cyclictest0-21swapper/108:10:201
65747699233,3cyclictest0-21swapper/011:10:550
657476992318,3cyclictest0-21swapper/011:30:020
657476992316,3cyclictest0-21swapper/009:31:090
657476992316,3cyclictest0-21swapper/008:00:460
657476992315,5cyclictest121ktimers/012:10:230
65747699231,18cyclictest0-21swapper/012:35:160
65747699231,18cyclictest0-21swapper/010:27:490
65747699231,18cyclictest0-21swapper/010:08:390
65747699231,18cyclictest0-21swapper/008:52:370
65747699231,18cyclictest0-21swapper/007:42:050
65747699230,19cyclictest0-21swapper/008:14:310
657485992216,3cyclictest0-21swapper/211:05:252
657485992215,5cyclictest726864-21kworker/u8:3+events_unbound10:45:002
657485992215,4cyclictest659112-21kthreadd07:15:002
657485992215,4cyclictest0-21swapper/210:35:252
657485992215,4cyclictest0-21swapper/209:25:262
657485992214,4cyclictest0-21swapper/211:10:272
657485992213,5cyclictest0-21swapper/211:50:152
65748099227,9cyclictest131rcu_preempt08:45:241
657476992218,2cyclictest13550irq/42-30be0000.ethernet12:15:150
657476992218,2cyclictest13550irq/42-30be0000.ethernet12:15:140
657476992218,2cyclictest0-21swapper/010:20:140
657476992217,3cyclictest13550irq/42-30be0000.ethernet10:15:130
657476992217,3cyclictest13550irq/42-30be0000.ethernet08:35:150
657476992215,5cyclictest13550irq/42-30be0000.ethernet09:45:130
657476992214,5cyclictest0-21swapper/011:40:260
657476992214,4cyclictest670846-21cut07:45:170
65747699221,19cyclictest0-21swapper/009:52:190
65747699221,19cyclictest0-21swapper/008:05:200
657476992211,8cyclictest768639-21cut12:30:150
65747699221,18cyclictest0-21swapper/010:44:520
65747699220,20cyclictest0-21swapper/008:22:200
657485992114,5cyclictest311ktimers/212:10:212
657485992114,3cyclictest0-21swapper/212:00:152
657485992113,4cyclictest0-21swapper/209:00:152
657485992112,7cyclictest669658-21mailstats07:40:252
657485992111,7cyclictest679346-21grep08:10:152
657485992111,7cyclictest0-21swapper/210:00:162
65748599210,7cyclictest663924-21forks07:25:162
657476992116,2cyclictest0-21swapper/012:20:200
657476992116,2cyclictest0-21swapper/012:20:200
657476992114,4cyclictest0-21swapper/009:40:280
65748599209,8cyclictest711876-21df09:45:152
657485992014,3cyclictest765258-21fschecks_time12:20:162
657485992014,3cyclictest765258-21fschecks_time12:20:152
657485992014,3cyclictest0-21swapper/208:45:162
657485992014,3cyclictest0-21swapper/208:15:272
657485992014,3cyclictest0-21swapper/208:15:272
657485992012,5cyclictest0-21swapper/208:05:292
65748099209,8cyclictest699716-21df09:10:141
657485991913,4cyclictest759344-21kworker/u8:1+events_unbound12:05:032
657485991912,5cyclictest311ktimers/209:20:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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