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2026-06-28 - 20:42
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Sun Jun 28, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17206382318275,27sleep00-21swapper/007:07:550
17205892313272,27sleep10-21swapper/107:07:231
172287521100,4sleep11722860-21perf07:15:001
18445822650,4sleep10-21swapper/110:53:281
18877772530,9sleep013-21ksoftirqd/011:52:360
179699490,5rtkit-daemon1834888-21apt-get10:40:121
179699450,3rtkit-daemon0-21swapper/012:10:070
172097699457,7cyclictest13-21ksoftirqd/007:20:010
179699430,3rtkit-daemon0-21swapper/007:22:000
1720979994311,3cyclictest141rcu_preempt12:25:001
172097699438,4cyclictest13-21ksoftirqd/010:05:000
172097699427,7cyclictest13-21ksoftirqd/009:45:010
179699410,3rtkit-daemon0-21swapper/011:37:350
172097699416,7cyclictest13-21ksoftirqd/009:35:010
172097699415,7cyclictest13-21ksoftirqd/011:15:010
179699400,3rtkit-daemon0-21swapper/010:52:430
179699400,3rtkit-daemon0-21swapper/007:33:260
179699400,3rtkit-daemon0-21swapper/007:27:390
172097699408,7cyclictest13-21ksoftirqd/012:05:010
172097699406,7cyclictest13-21ksoftirqd/010:55:210
172097699406,7cyclictest13-21ksoftirqd/008:10:000
172097699405,6cyclictest13-21ksoftirqd/011:10:000
1720976994010,6cyclictest13-21ksoftirqd/009:20:000
172097699398,5cyclictest13-21ksoftirqd/009:30:010
172097699397,5cyclictest13-21ksoftirqd/007:15:010
172097699396,7cyclictest1739554-21munin-run07:55:000
172097699395,7cyclictest13-21ksoftirqd/010:10:000
1720976993914,5cyclictest13-21ksoftirqd/012:20:000
1720976993914,5cyclictest13-21ksoftirqd/011:45:000
1720976993914,5cyclictest13-21ksoftirqd/007:45:000
1720976993912,5cyclictest13-21ksoftirqd/008:45:000
172097999381,13cyclictest1816763-21apt-get10:15:121
172097699389,5cyclictest13-21ksoftirqd/011:25:010
172097699388,7cyclictest13-21ksoftirqd/009:00:010
172097699388,6cyclictest13-21ksoftirqd/012:40:010
172097699387,7cyclictest13-21ksoftirqd/009:15:010
172097699385,4cyclictest13-21ksoftirqd/011:05:000
172097699384,7cyclictest13-21ksoftirqd/009:50:010
172097699378,7cyclictest1768884-21diskmemload10:35:120
172097699377,6cyclictest13-21ksoftirqd/011:28:560
172097699375,3cyclictest141rcu_preempt10:40:010
1720976993719,5cyclictest1912478-21ssh12:27:050
179699360,3rtkit-daemon0-21swapper/110:34:300
179699360,3rtkit-daemon0-21swapper/109:09:090
172097699368,6cyclictest13-21ksoftirqd/011:50:010
172097699367,6cyclictest13-21ksoftirqd/012:30:210
172097699366,7cyclictest13-21ksoftirqd/008:54:590
172097699366,7cyclictest13-21ksoftirqd/008:45:000
172097699366,6cyclictest13-21ksoftirqd/011:15:220
172097699365,7cyclictest13-21ksoftirqd/009:25:000
172097699365,6cyclictest13-21ksoftirqd/012:00:000
179699350,4rtkit-daemon1795-21rtkit-daemon11:07:001
179699350,3rtkit-daemon0-21swapper/108:22:440
172097999359,3cyclictest141rcu_preempt09:00:011
1720979993511,3cyclictest141rcu_preempt10:55:201
172097699359,5cyclictest13-21ksoftirqd/012:25:010
172097699358,6cyclictest13-21ksoftirqd/007:45:220
172097699356,6cyclictest13-21ksoftirqd/010:27:130
179699340,4rtkit-daemon1795-21rtkit-daemon10:31:241
179699340,3rtkit-daemon0-21swapper/108:39:180
172097999349,10cyclictest141rcu_preempt10:10:121
172097999344,3cyclictest141rcu_preempt11:10:121
1720979993411,3cyclictest141rcu_preempt11:40:121
172097699348,7cyclictest13-21ksoftirqd/010:21:230
172097699347,3cyclictest13-21ksoftirqd/008:30:010
172097699346,7cyclictest13-21ksoftirqd/009:55:020
172097699346,7cyclictest13-21ksoftirqd/009:55:020
172097699346,3cyclictest13-21ksoftirqd/008:35:010
1720976993411,5cyclictest13-21ksoftirqd/010:15:010
179699330,3rtkit-daemon1795-21rtkit-daemon11:32:111
1720979993311,3cyclictest141rcu_preempt11:20:121
1720979993311,3cyclictest141rcu_preempt09:50:101
1720979993310,3cyclictest141rcu_preempt11:00:121
1720979993310,3cyclictest141rcu_preempt09:35:511
172097699338,7cyclictest13-21ksoftirqd/009:54:270
172097699338,7cyclictest13-21ksoftirqd/007:35:220
172097699337,7cyclictest13-21ksoftirqd/012:05:240
172097699337,6cyclictest13-21ksoftirqd/009:35:190
172097699336,7cyclictest13-21ksoftirqd/008:00:220
172097699336,7cyclictest13-21ksoftirqd/007:55:230
1720976993319,4cyclictest13-21ksoftirqd/010:45:560
179699320,4rtkit-daemon1795-21rtkit-daemon10:36:091
172097999329,3cyclictest141rcu_preempt09:55:031
172097999329,3cyclictest141rcu_preempt09:55:021
172097999326,16cyclictest141rcu_preempt07:20:231
1720979993218,12cyclictest66950irq/132-enp2s009:10:501
1720979993212,3cyclictest141rcu_preempt12:15:111
1720979993212,3cyclictest141rcu_preempt09:25:141
1720979993211,3cyclictest141rcu_preempt09:20:111
1720979993211,2cyclictest141rcu_preempt10:20:131
1720979993210,4cyclictest141rcu_preempt12:00:131
1720979993210,3cyclictest141rcu_preempt12:05:111
1720979993210,3cyclictest141rcu_preempt07:30:211
172097699328,5cyclictest13-21ksoftirqd/011:30:270
172097699327,6cyclictest13-21ksoftirqd/010:20:000
1720976993211,5cyclictest13-21ksoftirqd/008:15:000
1720976993211,3cyclictest13-21ksoftirqd/009:00:210
179699310,4rtkit-daemon1795-21rtkit-daemon08:51:051
179699310,3rtkit-daemon1795-21rtkit-daemon08:47:081
172097999319,3cyclictest141rcu_preempt11:49:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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