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2026-03-12 - 07:26
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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 rack6slot0.osadl.org (updated Thu Mar 12, 2026 01:01:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2419399242237,3cyclictest0-21swapper/2822:23:1521
2419399242237,3cyclictest0-21swapper/2822:23:1521
2417899220208,3cyclictest0-21swapper/1422:30:116
2417899220208,3cyclictest0-21swapper/1422:30:116
2416099209187,9cyclictest171rcu_preempt21:29:270
2416099209187,9cyclictest171rcu_preempt21:29:270
2419899201159,37cyclictest2464-21CPU25
2419899201159,37cyclictest2464-21CPU25
2416099189156,29cyclictest2462-21CPU0
2416099189156,29cyclictest2462-21CPU0
241779918868,115cyclictest2456-21CPU5
241779918868,115cyclictest2456-21CPU5
241779918868,115cyclictest2456-21CPU5
2418399184159,21cyclictest3547-21CPU11
2418399184159,21cyclictest3547-21CPU11
2416099184128,25cyclictest0-21swapper/000:39:070
2416099184128,25cyclictest0-21swapper/000:39:070
2420299182134,23cyclictest0-21swapper/3523:17:3729
2420299182134,23cyclictest0-21swapper/3523:17:3729
241699918210,99cyclictest0-21swapper/800:12:0838
241699918210,99cyclictest0-21swapper/800:12:0838
2420399181170,6cyclictest0-21swapper/3623:38:4930
2420399181170,6cyclictest0-21swapper/3623:38:4930
2416099179174,2cyclictest0-21swapper/019:19:110
2416099179174,2cyclictest0-21swapper/019:19:100
2418399178168,4cyclictest0-21swapper/1900:37:0611
2418399178168,4cyclictest0-21swapper/1900:37:0611
2416899178139,22cyclictest0-21swapper/722:57:1037
2416899178139,22cyclictest0-21swapper/722:57:1037
2416899177160,15cyclictest0-21swapper/700:04:3537
2416899177160,15cyclictest0-21swapper/700:04:3537
2420299175125,9cyclictest171rcu_preempt00:06:2429
2420299175125,9cyclictest171rcu_preempt00:06:2429
2416899175101,15cyclictest0-21swapper/700:06:0737
2416899175101,15cyclictest0-21swapper/700:06:0737
2416099175149,17cyclictest0-21swapper/023:03:310
2416099175149,17cyclictest0-21swapper/023:03:310
2419899173161,10cyclictest0-21swapper/3119:50:2625
2419899173161,10cyclictest0-21swapper/3119:50:2625
2418399173102,18cyclictest0-21swapper/1923:30:1911
2418399173102,18cyclictest0-21swapper/1923:30:1911
2420299172161,9cyclictest0-21swapper/3521:56:4029
2420299172161,9cyclictest0-21swapper/3521:56:3929
2420299172161,9cyclictest0-21swapper/3521:56:3929
241779917252,109cyclictest0-21swapper/1322:35:145
241779917252,109cyclictest0-21swapper/1322:35:145
2420299171124,34cyclictest0-21swapper/3523:32:0729
2420299171124,34cyclictest0-21swapper/3523:32:0729
2420299171123,26cyclictest0-21swapper/3500:04:3729
2420299171123,26cyclictest0-21swapper/3500:04:3629
2419399171152,13cyclictest14509-21cstates22:00:1521
2419399171152,13cyclictest14509-21cstates22:00:1421
2419399171152,13cyclictest14509-21cstates22:00:1421
2420299170125,15cyclictest0-21swapper/3520:44:0629
2420299170125,15cyclictest0-21swapper/3520:44:0629
2416899170154,9cyclictest0-21swapper/723:20:0637
2416899170154,9cyclictest0-21swapper/723:20:0637
2419999169165,2cyclictest0-21swapper/3222:46:1626
2419999169165,2cyclictest0-21swapper/3222:46:1626
2418399169163,2cyclictest0-21swapper/1923:39:0211
2418399169163,2cyclictest0-21swapper/1923:39:0111
241829916941,117cyclictest31131-21systemd00:00:1310
241829916941,117cyclictest31131-21systemd00:00:1310
2418299169155,5cyclictest0-21swapper/1800:14:4010
2418299169155,5cyclictest0-21swapper/1800:14:4010
2416899169129,21cyclictest2464-21CPU37
2416099169124,22cyclictest0-21swapper/023:53:170
2416099169124,22cyclictest0-21swapper/023:53:160
2416099169124,21cyclictest0-21swapper/000:17:140
2416099169124,21cyclictest0-21swapper/000:17:140
2416899168155,7cyclictest0-21swapper/721:29:4837
2416899168155,7cyclictest0-21swapper/721:29:4837
2416899168155,12cyclictest0-21swapper/721:36:3437
2416899168155,12cyclictest0-21swapper/721:36:3437
24161991681,163cyclictest2461-21CPU1
24161991681,163cyclictest2461-21CPU1
2416099168159,8cyclictest0-21swapper/022:41:280
2416099168159,8cyclictest0-21swapper/022:41:280
2416099168159,8cyclictest0-21swapper/022:41:280
2420299167156,8cyclictest0-21swapper/3519:19:0029
2420299167156,8cyclictest0-21swapper/3519:19:0029
2420299167151,4cyclictest0-21swapper/3521:28:3329
2420299167151,4cyclictest0-21swapper/3521:28:3329
241999916778,74cyclictest2447-21CPU26
241999916778,74cyclictest2447-21CPU26
2419899167156,10cyclictest0-21swapper/3123:46:2925
2419899167156,10cyclictest0-21swapper/3123:46:2925
2419099167149,14cyclictest37267-21CPU18
2419099167149,14cyclictest37267-21CPU18
2419099167149,14cyclictest37267-21CPU18
2417899167160,5cyclictest9828-21kworker/14:2-events23:10:186
2417899167160,5cyclictest9828-21kworker/14:2-events23:10:186
2417799167111,50cyclictest0-21swapper/1322:41:385
2417799167111,50cyclictest0-21swapper/1322:41:385
2417799167111,50cyclictest0-21swapper/1322:41:385
24167991671,2cyclictest0-21swapper/600:03:0136
24167991671,2cyclictest0-21swapper/600:03:0136
2416299167127,9cyclictest0-21swapper/222:13:0512
2416299167127,9cyclictest0-21swapper/222:13:0512
2419699166145,11cyclictest0-21swapper/3000:20:2624
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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