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2026-06-21 - 12:04
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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 rackcslot8.osadl.org (updated Sun Jun 21, 2026 00:49:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22787992314,180cyclictest0-21swapper/921:13:4431
330891220211,6phc2sys0-21swapper/219:05:1412
330891220211,6phc2sys0-21swapper/219:05:1412
22887991984,193cyclictest151rcu_preempt23:26:0018
3273911840,176ptp4l0-21swapper/119:05:331
3273911840,176ptp4l0-21swapper/119:05:331
22787991834,177cyclictest0-21swapper/921:50:2631
22787991824,143cyclictest0-21swapper/922:20:3331
22787991824,137cyclictest0-21swapper/922:46:1131
22787991784,118cyclictest0-21swapper/923:41:4831
22787991784,118cyclictest0-21swapper/923:41:4731
22787991783,121cyclictest0-21swapper/922:11:5931
22787991774,115cyclictest0-21swapper/923:04:5531
22812991741,145cyclictest0-21swapper/1322:05:545
22787991704,147cyclictest0-21swapper/921:18:3331
22787991654,107cyclictest0-21swapper/900:24:0131
22787991654,107cyclictest0-21swapper/900:24:0131
22787991634,158cyclictest0-21swapper/921:30:1731
22787991634,158cyclictest0-21swapper/920:21:2831
22787991633,140cyclictest0-21swapper/920:50:1331
227879916180,81cyclictest70-21ksoftirqd/923:14:0031
22787991524,101cyclictest0-21swapper/923:20:1231
22787991504,106cyclictest0-21swapper/900:30:5831
22787991504,106cyclictest0-21swapper/900:30:5731
22787991464,124cyclictest0-21swapper/923:35:1131
2275699146144,1cyclictest40-21ksoftirqd/422:54:2526
229269914534,66cyclictest0-21swapper/3123:44:5025
229269914534,66cyclictest0-21swapper/3123:44:4925
22787991453,107cyclictest0-21swapper/921:27:0631
22906991430,80cyclictest0-21swapper/2820:04:5521
22926991420,88cyclictest0-21swapper/3123:46:2625
227879914234,79cyclictest0-21swapper/923:26:1731
22787991413,103cyclictest0-21swapper/919:48:5331
22787991394,95cyclictest0-21swapper/919:28:0331
22869991372,120cyclictest0-21swapper/2223:19:0215
22869991372,120cyclictest0-21swapper/2223:19:0215
228459913762,29cyclictest0-21swapper/1819:45:1710
22787991373,92cyclictest0-21swapper/921:48:2931
227879913727,74cyclictest0-21swapper/921:42:1131
22787991353,102cyclictest0-21swapper/922:00:0131
22787991350,86cyclictest0-21swapper/923:34:1931
229069913425,68cyclictest0-21swapper/2823:08:3021
228639913456,55cyclictest0-21swapper/2100:36:4714
227879913450,52cyclictest0-21swapper/922:56:5431
22787991344,98cyclictest0-21swapper/900:03:4131
22787991344,97cyclictest0-21swapper/922:37:5731
22729991340,84cyclictest0-21swapper/000:40:000
229269913320,52cyclictest0-21swapper/3122:57:1525
229069913326,70cyclictest0-21swapper/2822:33:2721
229069913326,63cyclictest0-21swapper/2822:56:3021
22869991332,82cyclictest0-21swapper/2222:38:2415
227879913336,62cyclictest0-21swapper/920:28:0431
229069913225,69cyclictest0-21swapper/2823:54:1221
229069913225,69cyclictest0-21swapper/2823:54:1121
229069913225,65cyclictest0-21swapper/2821:20:1521
229069913214,70cyclictest0-21swapper/2822:50:0721
22869991322,75cyclictest0-21swapper/2223:06:1215
227879913253,55cyclictest0-21swapper/920:30:2731
227879913245,62cyclictest0-21swapper/922:01:2431
227879913228,68cyclictest0-21swapper/922:09:1931
229069913127,76cyclictest0-21swapper/2823:40:2421
229069913127,76cyclictest0-21swapper/2823:40:2421
229069913126,70cyclictest0-21swapper/2822:16:5521
229069913118,101cyclictest32677-21switchtime20:30:1921
228129913130,74cyclictest0-21swapper/1323:47:125
228129913128,64cyclictest0-21swapper/1320:58:205
22812991311,81cyclictest0-21swapper/1322:56:585
227879913142,54cyclictest0-21swapper/919:19:2331
227879913127,65cyclictest0-21swapper/920:56:3831
227879913126,69cyclictest0-21swapper/923:09:5031
229069913051,57cyclictest0-21swapper/2819:15:1421
229069913051,52cyclictest0-21swapper/2822:35:2321
229069913035,66cyclictest0-21swapper/2822:04:0621
229069913030,70cyclictest0-21swapper/2821:02:0621
229069913025,67cyclictest0-21swapper/2821:34:3921
229069913025,67cyclictest0-21swapper/2800:13:5921
229069913025,64cyclictest0-21swapper/2820:45:1421
22869991302,89cyclictest0-21swapper/2200:17:1715
22869991302,89cyclictest0-21swapper/2200:17:1715
228459913046,52cyclictest0-21swapper/1823:59:0310
228459913046,52cyclictest0-21swapper/1823:59:0310
228129913029,69cyclictest0-21swapper/1323:33:355
227879913049,63cyclictest0-21swapper/921:09:3031
22787991303,87cyclictest0-21swapper/921:21:4531
227879913028,72cyclictest0-21swapper/900:13:2631
227879913027,68cyclictest0-21swapper/922:18:2531
227879913026,68cyclictest0-21swapper/922:26:5831
227569913065,59cyclictest40-21ksoftirqd/421:47:4026
227299913018,106cyclictest151rcu_preempt21:30:300
229069912930,76cyclictest0-21swapper/2800:30:0121
229069912930,76cyclictest0-21swapper/2800:30:0121
229069912929,64cyclictest0-21swapper/2821:14:2321
229069912926,66cyclictest0-21swapper/2822:06:2821
229069912924,39cyclictest0-21swapper/2800:01:4121
228129912923,76cyclictest0-21swapper/1321:14:525
227879912938,61cyclictest0-21swapper/922:44:4231
227879912927,67cyclictest0-21swapper/922:52:3731
22926991280,72cyclictest0-21swapper/3120:57:1725
229069912831,54cyclictest0-21swapper/2820:40:2621
229069912828,66cyclictest0-21swapper/2823:30:5921
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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