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2026-08-20 - 19:49
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack1slot8.osadl.org (updated Thu Aug 20, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
73362926904,14sleep10-21swapper/107:05:031
902999903814,83cyclictest0-21swapper/007:12:110
903099853781,39cyclictest0-21swapper/107:12:111
902999829771,46cyclictest0-21swapper/010:21:400
903099796737,43cyclictest0-21swapper/110:21:401
902999450370,73cyclictest0-21swapper/009:40:200
86252427403,16sleep00-21swapper/007:06:200
903099378320,27cyclictest4950-21strings09:40:201
1486321140,5sleep041ktimersoftd/009:59:580
228699940,11rtkit-daemon0-21swapper/007:24:440
228699880,4rtkit-daemon2285-21rtkit-daemon12:28:051
902999825,71cyclictest0-21swapper/012:25:030
903099786,41cyclictest0-21swapper/110:00:001
903099779,51cyclictest0-21swapper/108:56:001
9029997759,13cyclictest0-21swapper/009:29:000
9029997556,14cyclictest0-21swapper/012:07:580
902999755,65cyclictest0-21swapper/010:40:440
902999734,60cyclictest0-21swapper/011:47:530
902999733,63cyclictest16566-21munin-node09:00:150
204932730,3sleep014-21rcuop/011:10:000
9029997140,26cyclictest0-21swapper/012:37:450
902999712,60cyclictest24997-21ssh10:17:270
9029997040,25cyclictest0-21swapper/009:15:210
902999702,62cyclictest10974-21munin-node07:15:150
72702700,9sleep013-21rcu_preempt11:45:010
902999694,58cyclictest2098-21munin-node08:20:200
902999693,60cyclictest2121-21grep10:35:170
902999693,60cyclictest13183-21if_err_eth011:55:140
902999693,59cyclictest28604-21munin-node10:25:150
902999693,45cyclictest16682-21ssh11:01:060
9029996924,39cyclictest88850irq/46-eth0-tx-11:35:010
903099685,37cyclictest0-21swapper/111:44:581
902999683,59cyclictest11822-21rm11:52:300
902999682,42cyclictest25189-21ssh11:17:320
228699680,4rtkit-daemon2285-21rtkit-daemon10:14:310
903099676,36cyclictest0-21swapper/110:07:591
903099675,38cyclictest0-21swapper/111:52:591
902999676,55cyclictest0-21swapper/011:10:240
9029996741,21cyclictest0-21swapper/008:15:130
902999673,58cyclictest20381-21gltestperf07:40:150
902999673,55cyclictest2488-21munin-node09:35:260
902999672,45cyclictest22059-21df_abs07:45:130
902999672,40cyclictest30462-21ssh11:27:040
9029996713,46cyclictest0-21swapper/010:55:300
9029996643,17cyclictest0-21swapper/012:20:240
902999663,57cyclictest15148-21grep08:55:160
902999663,55cyclictest11951-21runrttasks09:54:140
902999663,41cyclictest27719-21ssh09:23:230
9029996618,43cyclictest88850irq/46-eth0-tx-09:12:060
903099655,37cyclictest0-21swapper/108:09:001
902999653,54cyclictest30670-21latency_hist08:10:010
9029996521,38cyclictest88850irq/46-eth0-tx-10:05:240
902999652,58cyclictest24471-21taskset12:15:220
902999652,43cyclictest13809-21processes08:50:240
9029996444,15cyclictest0-21swapper/008:15:000
9029996440,19cyclictest0-21swapper/012:32:150
902999644,40cyclictest15997-21latency12:00:170
902999643,55cyclictest5660-21latency_hist08:30:010
902999642,39cyclictest32764-21ssh09:31:480
9029996412,44cyclictest26683-21memory11:20:170
903099635,37cyclictest0-21swapper/109:47:001
902999637,50cyclictest0-21swapper/007:59:440
9029996343,15cyclictest0-21swapper/008:45:000
902999634,53cyclictest0-21swapper/010:33:570
902999633,54cyclictest21467-21munin-node12:10:180
902999632,55cyclictest19568-21runrttasks09:05:270
902999632,54cyclictest23591-21munin-node07:50:180
902999632,53cyclictest14576-21munin-node07:25:110
9029996315,42cyclictest88850irq/46-eth0-tx-09:47:160
903099625,38cyclictest0-21swapper/108:02:001
903099625,37cyclictest0-21swapper/108:16:001
902999622,54cyclictest8486-21switchtime08:35:250
902999622,54cyclictest18152-21latency_hist07:35:010
902999622,52cyclictest19346-21uptime07:35:260
902999622,39cyclictest3479-21ssh11:36:410
9029996218,37cyclictest88850irq/46-eth0-tx-10:51:080
903099615,35cyclictest0-21swapper/110:30:581
903099615,34cyclictest0-21swapper/108:54:591
902999614,34cyclictest1568-21runrttasks08:45:250
902999613,50cyclictest8875-21ssh10:47:110
902999613,34cyclictest17600-21munin-run10:05:000
902999612,53cyclictest28122-21ls08:00:250
228699610,3rtkit-daemon31137-21ssh11:29:291
903099605,37cyclictest0-21swapper/107:30:011
903099605,34cyclictest0-21swapper/112:07:591
903099605,34cyclictest0-21swapper/110:52:591
903099605,34cyclictest0-21swapper/108:23:001
9030996011,30cyclictest0-21swapper/110:28:591
903099596,34cyclictest0-21swapper/108:44:591
903099595,35cyclictest0-21swapper/111:36:001
903099595,35cyclictest0-21swapper/111:11:581
903099595,35cyclictest0-21swapper/110:36:001
903099595,34cyclictest0-21swapper/110:41:591
903099595,34cyclictest0-21swapper/109:07:001
903099595,31cyclictest0-21swapper/107:50:591
902999592,49cyclictest6213-21if_err_eth008:30:170
903099585,34cyclictest0-21swapper/109:54:591
903099585,32cyclictest0-21swapper/107:36:011
903099577,32cyclictest0-21swapper/111:56:001
903099575,34cyclictest0-21swapper/107:20:591
903099575,33cyclictest0-21swapper/108:50:001
903099575,32cyclictest0-21swapper/108:30:591
903099568,31cyclictest0-21swapper/111:02:581
903099565,34cyclictest0-21swapper/110:12:581
903099565,33cyclictest0-21swapper/110:16:591
903099555,34cyclictest0-21swapper/109:32:001
903099555,33cyclictest0-21swapper/108:30:001
903099547,31cyclictest0-21swapper/111:15:591
903099547,31cyclictest0-21swapper/108:10:591
903099545,35cyclictest0-21swapper/111:50:001
903099539,27cyclictest0-21swapper/112:18:001
903099536,31cyclictest0-21swapper/107:49:011
903099535,36cyclictest0-21swapper/108:40:001
903099535,34cyclictest0-21swapper/112:31:591
903099535,32cyclictest0-21swapper/109:36:011
903099534,31cyclictest0-21swapper/109:15:001
9030995310,29cyclictest0-21swapper/112:36:591
903099529,29cyclictest0-21swapper/107:34:001
903099529,27cyclictest0-21swapper/110:02:581
903099525,30cyclictest0-21swapper/109:26:001
9030995211,29cyclictest0-21swapper/111:33:581
903099519,31cyclictest0-21swapper/109:19:011
903099518,30cyclictest0-21swapper/112:24:591
903099516,33cyclictest0-21swapper/109:00:591
903099515,40cyclictest0-21swapper/112:00:421
903099515,31cyclictest0-21swapper/107:57:011
903099515,30cyclictest0-21swapper/107:44:591
228699510,4rtkit-daemon2285-21rtkit-daemon11:05:181
903099505,28cyclictest0-21swapper/112:14:581
903099495,36cyclictest0-21swapper/110:47:181
9030994914,30cyclictest0-21swapper/111:23:271
122702494,11sleep10-21swapper/107:16:371
9030994810,26cyclictest0-21swapper/109:22:591
903099468,30cyclictest0-21swapper/110:57:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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