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2026-07-02 - 13:50
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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 rackfslot7.osadl.org (updated Thu Jul 02, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3786478995940,1cyclictest601ktimers/400:03:534
3786478995839,19cyclictest0-21swapper/422:29:574
3786483995738,19cyclictest70-21ksoftirqd/523:40:145
378647899550,18cyclictest0-21swapper/420:03:344
3786483995435,19cyclictest0-21swapper/522:25:145
3786483995234,18cyclictest0-21swapper/522:49:165
3786483995234,0cyclictest0-21swapper/523:07:175
3786487995113,19cyclictest771rcuc/600:30:166
3786483995132,19cyclictest3822858-21kworker/u32:5+events_unbound20:55:085
3786483995112,19cyclictest191rcu_preempt00:25:235
3786483995011,19cyclictest0-21swapper/519:40:165
3786464994911,19cyclictest321rcuc/121:15:161
3786458994911,19cyclictest0-21swapper/020:25:160
3786458994911,19cyclictest0-21swapper/020:15:170
3786483994830,18cyclictest3946052-21kworker/u32:3+events_unbound00:37:255
378645899489,39cyclictest0-21swapper/023:45:140
3786458994810,19cyclictest0-21swapper/023:55:160
3786464994627,19cyclictest0-21swapper/122:50:151
3786478994240,1cyclictest0-21swapper/422:20:064
3786478994218,1cyclictest3921832-21cstates23:15:124
378645899423,39cyclictest0-21swapper/021:10:140
378647899411,39cyclictest0-21swapper/421:50:074
378647899411,39cyclictest0-21swapper/421:38:444
378647899411,39cyclictest0-21swapper/420:06:514
378647899411,39cyclictest0-21swapper/419:37:004
378647899410,19cyclictest0-21swapper/421:30:144
378647899410,19cyclictest0-21swapper/421:30:134
3786478994017,22cyclictest3861592-21df21:25:134
378647899401,39cyclictest0-21swapper/422:06:374
378647899401,39cyclictest0-21swapper/421:41:234
378647899401,39cyclictest0-21swapper/420:52:204
378647899401,39cyclictest0-21swapper/420:46:014
378647899401,19cyclictest0-21swapper/423:28:534
378647899400,39cyclictest3967637-21chrt00:39:254
378647899400,39cyclictest3908846-21memory22:50:194
378647899400,39cyclictest0-21swapper/422:10:424
378647899400,39cyclictest0-21swapper/420:34:024
378647899400,18cyclictest0-21swapper/419:55:194
3786458994022,18cyclictest0-21swapper/020:55:150
3786483993920,19cyclictest0-21swapper/522:40:165
378648399391,19cyclictest3786455-21cyclictest00:30:155
378647899391,19cyclictest3836084-21munin-run20:40:014
378647899391,19cyclictest0-21swapper/423:01:014
378647899390,39cyclictest0-21swapper/423:09:164
378647899390,39cyclictest0-21swapper/420:10:364
378647899390,39cyclictest0-21swapper/419:44:494
378647899390,39cyclictest0-21swapper/419:15:344
378647899390,38cyclictest0-21swapper/421:55:104
378647899390,19cyclictest0-21swapper/420:55:164
378647899390,19cyclictest0-21swapper/419:30:154
378647899390,18cyclictest0-21swapper/423:45:174
378647899390,17cyclictest3837913-21ps20:40:224
378647899390,15cyclictest0-21swapper/423:35:164
378647899390,0cyclictest0-21swapper/421:05:124
3786478993837,0cyclictest1-21systemd23:00:024
3786478993814,24cyclictest0-21swapper/419:20:154
378647899380,38cyclictest0-21swapper/423:20:254
378647899380,38cyclictest0-21swapper/400:05:264
378647899380,37cyclictest0-21swapper/422:37:154
378647899380,18cyclictest0-21swapper/423:41:564
378647899380,17cyclictest0-21swapper/422:00:264
378648399370,18cyclictest0-21swapper/522:35:155
378647899370,37cyclictest3965004-21systemd-run00:34:594
3786458993736,1cyclictest3813798-21kworker/0:2+events20:03:340
3786483993636,0cyclictest0-21swapper/522:04:115
3786483993617,19cyclictest3907788-21kworker/u32:0+events_unbound22:55:165
3786483993617,19cyclictest3850160-21kworker/u32:1+events_unbound21:25:115
378648399360,35cyclictest0-21swapper/500:05:205
3786478993619,17cyclictest0-21swapper/400:20:154
3786478993617,19cyclictest3944543-21ntpq23:55:194
378647899360,36cyclictest0-21swapper/423:34:304
378647899360,36cyclictest0-21swapper/422:42:014
378647899360,36cyclictest0-21swapper/422:30:204
378647899360,35cyclictest0-21swapper/422:15:074
378647899360,35cyclictest0-21swapper/421:11:254
378647899360,35cyclictest0-21swapper/419:53:204
378647899360,35cyclictest0-21swapper/419:26:224
378647899360,34cyclictest0-21swapper/423:10:114
3786483993535,0cyclictest0-21swapper/519:55:035
3786483993516,0cyclictest3792588-21kworker/u32:2+events_unbound20:25:065
378648399350,15cyclictest0-21swapper/519:30:155
378648399350,15cyclictest0-21swapper/500:00:155
378647899350,35cyclictest0-21swapper/423:50:144
378647899350,35cyclictest0-21swapper/421:45:224
378647899350,35cyclictest0-21swapper/420:21:324
378647899350,35cyclictest0-21swapper/419:11:414
378647899350,34cyclictest0-21swapper/421:20:064
378647899350,34cyclictest0-21swapper/421:20:054
378647899350,15cyclictest0-21swapper/422:45:164
378647899350,15cyclictest0-21swapper/421:16:404
378647899350,15cyclictest0-21swapper/421:00:554
378647899350,15cyclictest0-21swapper/420:25:374
378647899350,15cyclictest0-21swapper/420:16:414
378647899350,15cyclictest0-21swapper/419:46:174
378647899350,15cyclictest0-21swapper/400:25:084
378647899350,15cyclictest0-21swapper/400:15:044
378647899350,15cyclictest0-21swapper/400:10:414
378645899350,34cyclictest0-21swapper/023:20:170
3786483993433,1cyclictest3934733-21kworker/u32:2+writeback23:55:215
378648399340,34cyclictest0-21swapper/520:43:075
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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