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2026-04-12 - 06:51
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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 100 highest latencies:
System rack3slot6.osadl.org (updated Sun Apr 12, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269389910610,52cyclictest0-21swapper/022:20:130
269389910610,52cyclictest0-21swapper/022:20:130
269429910585,13cyclictest26-21ksoftirqd/119:35:121
26938991027,54cyclictest0-21swapper/000:00:130
2665329530,54sleep10-21swapper/119:08:541
262092910,6sleep126207-21grep22:05:361
325812890,6chrt32569-21apt-get22:25:150
26942998762,11cyclictest26-21ksoftirqd/119:15:101
26942998353,15cyclictest26-21ksoftirqd/121:05:131
26942998341,35cyclictest0-21swapper/121:00:121
26942998259,13cyclictest26-21ksoftirqd/120:55:141
26942998158,11cyclictest26-21ksoftirqd/123:55:251
26942998153,17cyclictest26-21ksoftirqd/121:40:151
2655428135,28sleep00-21swapper/019:07:500
26942997851,17cyclictest26-21ksoftirqd/100:35:141
26942997751,14cyclictest26-21ksoftirqd/119:55:131
26942997746,17cyclictest26-21ksoftirqd/123:35:121
183072770,9chrt0-21swapper/020:15:040
26942997626,44cyclictest0-21swapper/100:30:151
26942997447,15cyclictest13250irq/23-ehci_hcd20:35:131
26942997447,15cyclictest13250irq/23-ehci_hcd20:35:131
26938997147,16cyclictest14-21ksoftirqd/020:05:130
77862700,41sleep10-21swapper/100:15:371
77862700,41sleep10-21swapper/100:15:371
26942997040,24cyclictest26-21ksoftirqd/119:25:141
56882690,3sleep0171rcuc/021:10:120
26942996942,15cyclictest0-21swapper/120:00:221
289372680,7chrt261ksoftirqd/120:45:011
26942996825,39cyclictest26-21ksoftirqd/120:50:321
26942996725,38cyclictest26-21ksoftirqd/123:25:261
162732670,8chrt0-21swapper/120:09:551
26942996642,17cyclictest26-21ksoftirqd/122:35:141
26942996638,21cyclictest26-21ksoftirqd/100:00:041
26942996637,23cyclictest26-21ksoftirqd/121:10:281
26942996635,24cyclictest243-21systemd-journal20:30:001
26942996523,38cyclictest26-21ksoftirqd/123:05:341
2693899656,46cyclictest0-21swapper/023:30:150
41382640,12chrt151rcu_preempt00:05:351
2694299627,24cyclictest14707-21apt-get21:35:131
2694299626,51cyclictest0-21swapper/122:30:231
26942996240,13cyclictest243-21systemd-journal19:15:001
26942996216,10cyclictest26-21ksoftirqd/121:50:361
26938996230,27cyclictest14-21ksoftirqd/020:00:260
26942996133,16cyclictest0-21swapper/119:50:131
26942996132,17cyclictest26-21ksoftirqd/122:15:131
26942996126,25cyclictest457-21dbus-daemon23:15:001
26938996138,18cyclictest14-21ksoftirqd/022:55:160
26938996138,17cyclictest14-21ksoftirqd/019:15:140
26942996010,45cyclictest0-21swapper/119:40:241
26938996038,16cyclictest14-21ksoftirqd/023:40:360
26938996037,18cyclictest14-21ksoftirqd/022:40:290
26938996037,17cyclictest14-21ksoftirqd/019:25:160
28882590,6chrt2887-21sed21:00:360
26942995938,12cyclictest26-21ksoftirqd/121:20:151
26942995936,14cyclictest24487-21cron23:35:001
26942995935,18cyclictest26-21ksoftirqd/123:55:021
2694299593,47cyclictest20128-21latency_hist20:20:011
26942995934,20cyclictest26-21ksoftirqd/122:40:121
26942995934,20cyclictest26-21ksoftirqd/122:00:111
26942995929,18cyclictest26-21ksoftirqd/100:10:121
2693899598,7cyclictest151rcu_preempt22:52:330
2693899594,37cyclictest151rcu_preempt21:20:260
26938995936,18cyclictest14-21ksoftirqd/023:50:170
26938995936,18cyclictest14-21ksoftirqd/000:05:360
26938995911,16cyclictest151rcu_preempt23:10:000
26938995910,43cyclictest14-21ksoftirqd/022:00:190
2694299586,43cyclictest0-21swapper/120:20:191
2694299586,11cyclictest0-21swapper/122:10:161
2694299585,14cyclictest21739-21apt-get21:55:151
26942995842,10cyclictest0-21swapper/123:00:181
26942995839,11cyclictest26-21ksoftirqd/100:25:381
26942995836,13cyclictest26-21ksoftirqd/122:25:011
26942995836,13cyclictest26-21ksoftirqd/122:25:011
26942995835,17cyclictest26-21ksoftirqd/119:30:251
26942995834,18cyclictest26929-21cyclictest20:30:141
26942995828,17cyclictest0-21swapper/122:55:141
2693899588,45cyclictest0-21swapper/023:15:340
26938995841,10cyclictest14-21ksoftirqd/021:25:140
26938995835,18cyclictest14-21ksoftirqd/020:20:140
2694299578,43cyclictest0-21swapper/122:45:211
26942995739,10cyclictest26-21ksoftirqd/121:45:191
26942995738,11cyclictest26-21ksoftirqd/122:25:111
26942995738,10cyclictest26-21ksoftirqd/123:20:121
26942995738,10cyclictest26-21ksoftirqd/120:15:011
26942995732,19cyclictest26929-21cyclictest23:45:131
26942995732,18cyclictest26-21ksoftirqd/119:20:271
26942995725,25cyclictest26-21ksoftirqd/119:45:281
26942995713,33cyclictest503-21snmpd21:25:151
2693899575,17cyclictest15609-21switchtime21:35:340
2693899575,14cyclictest25237-21apt-get22:05:140
26938995736,16cyclictest14-21ksoftirqd/020:50:160
26938995735,17cyclictest14-21ksoftirqd/021:45:170
26938995726,19cyclictest14-21ksoftirqd/019:45:120
26938995720,32cyclictest19927-21kernelversion23:20:250
26942995639,9cyclictest26-21ksoftirqd/121:30:211
26942995639,11cyclictest26-21ksoftirqd/121:20:011
26942995637,10cyclictest26-21ksoftirqd/100:20:151
26942995633,9cyclictest26-21ksoftirqd/123:15:341
26942995630,20cyclictest30603-21cron20:50:011
26942995621,30cyclictest26-21ksoftirqd/123:40:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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