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2026-08-21 - 06:31
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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 rackdslot4.osadl.org (updated Fri Aug 21, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206173,22phc2sys0-21swapper/319:08:293
184762204170,22sleep10-21swapper/119:07:061
183492203171,21sleep20-21swapper/219:05:342
164812199165,23sleep00-21swapper/019:05:080
138491570,1ptp4l401ktimersoftd/321:20:253
138491570,1ptp4l401ktimersoftd/300:26:133
50798540,2rtkit-daemon506-21rtkit-daemon22:50:380
138491540,0ptp4l401ktimersoftd/322:25:503
286112510,4sleep0101ktimersoftd/022:44:590
18993994729,15cyclictest25-21ksoftirqd/122:11:591
18994994541,3cyclictest33-21ksoftirqd/223:20:012
18994994431,10cyclictest33-21ksoftirqd/220:55:132
138491440,0ptp4l401ktimersoftd/320:15:053
18993994324,4cyclictest25-21ksoftirqd/123:27:581
1899399430,41cyclictest0-21swapper/100:35:341
138491430,0ptp4l401ktimersoftd/321:15:293
138491430,0ptp4l401ktimersoftd/300:09:283
18994994237,3cyclictest33-21ksoftirqd/219:40:002
18994994213,3cyclictest33-21ksoftirqd/200:30:192
1899399410,39cyclictest0-21swapper/119:50:531
1899499404,6cyclictest33-21ksoftirqd/223:20:182
1899499396,4cyclictest33-21ksoftirqd/222:00:282
1899499395,5cyclictest33-21ksoftirqd/221:05:242
1899499394,2cyclictest121rcu_preempt21:15:262
1899499391,7cyclictest33-21ksoftirqd/222:20:202
18994993910,7cyclictest33-21ksoftirqd/219:45:122
18995993834,2cyclictest41-21ksoftirqd/321:00:013
1899499389,4cyclictest33-21ksoftirqd/220:45:192
1899499388,4cyclictest33-21ksoftirqd/222:45:192
1899499384,3cyclictest33-21ksoftirqd/200:05:172
1899499383,8cyclictest33-21ksoftirqd/220:19:592
18994993833,3cyclictest33-21ksoftirqd/222:15:122
18994993833,3cyclictest33-21ksoftirqd/220:30:142
18994993833,3cyclictest33-21ksoftirqd/200:20:192
18994993832,3cyclictest33-21ksoftirqd/223:35:012
18994993810,4cyclictest33-21ksoftirqd/219:30:002
1899399380,36cyclictest0-21swapper/119:12:031
138491380,0ptp4l401ktimersoftd/322:00:003
138491380,0ptp4l401ktimersoftd/321:30:183
138491380,0ptp4l401ktimersoftd/320:10:233
138491380,0ptp4l401ktimersoftd/319:29:433
18995993730,4cyclictest41-21ksoftirqd/323:07:063
1899499377,3cyclictest33-21ksoftirqd/223:30:012
1899499375,5cyclictest33-21ksoftirqd/221:25:162
1899499375,5cyclictest33-21ksoftirqd/200:00:172
18994993732,3cyclictest33-21ksoftirqd/222:50:162
18994993732,3cyclictest33-21ksoftirqd/221:40:002
18994993732,3cyclictest33-21ksoftirqd/220:40:162
18994993731,4cyclictest33-21ksoftirqd/222:09:202
18994993731,3cyclictest33-21ksoftirqd/222:00:012
1899399370,35cyclictest0-21swapper/119:20:431
1899399370,1cyclictest0-21swapper/122:06:221
18992993731,4cyclictest9-21ksoftirqd/000:35:120
50798360,2rtkit-daemon506-21rtkit-daemon20:56:530
18995993630,4cyclictest41-21ksoftirqd/323:48:493
18995993630,4cyclictest41-21ksoftirqd/322:15:033
18995993630,4cyclictest41-21ksoftirqd/321:14:453
18995993630,4cyclictest41-21ksoftirqd/320:43:163
18995993630,4cyclictest41-21ksoftirqd/319:43:343
1899499368,4cyclictest33-21ksoftirqd/220:05:242
1899499364,3cyclictest33-21ksoftirqd/223:55:142
1899499364,2cyclictest121rcu_preempt23:45:242
18994993632,2cyclictest33-21ksoftirqd/223:40:242
18994993631,3cyclictest33-21ksoftirqd/222:30:142
18994993631,3cyclictest33-21ksoftirqd/222:10:172
18994993630,4cyclictest33-21ksoftirqd/221:46:172
18994993630,4cyclictest33-21ksoftirqd/221:46:162
18994993630,4cyclictest33-21ksoftirqd/220:28:512
18994993630,4cyclictest33-21ksoftirqd/220:00:462
18994993630,4cyclictest33-21ksoftirqd/219:40:432
18994993630,4cyclictest33-21ksoftirqd/200:16:252
18994993630,3cyclictest33-21ksoftirqd/222:44:592
18994993630,3cyclictest33-21ksoftirqd/220:20:132
18994993629,4cyclictest33-21ksoftirqd/223:15:002
18994993629,4cyclictest33-21ksoftirqd/219:50:472
18994993625,9cyclictest33-21ksoftirqd/222:38:462
1899499361,6cyclictest33-21ksoftirqd/223:00:132
18994993610,4cyclictest33-21ksoftirqd/200:35:142
18993993630,4cyclictest25-21ksoftirqd/123:15:461
18993993630,4cyclictest25-21ksoftirqd/120:39:001
1899399360,35cyclictest0-21swapper/121:51:331
138491360,0ptp4l401ktimersoftd/323:15:213
138491360,0ptp4l401ktimersoftd/322:05:153
18995993529,4cyclictest41-21ksoftirqd/321:51:563
18995993529,4cyclictest41-21ksoftirqd/320:52:473
18995993528,5cyclictest41-21ksoftirqd/320:34:323
1899499355,2cyclictest121rcu_preempt21:10:132
1899499354,5cyclictest33-21ksoftirqd/221:40:162
1899499353,4cyclictest33-21ksoftirqd/200:10:142
18994993531,2cyclictest33-21ksoftirqd/221:30:152
18994993531,2cyclictest33-21ksoftirqd/221:00:132
18994993531,2cyclictest33-21ksoftirqd/219:25:002
18994993531,2cyclictest33-21ksoftirqd/200:30:002
18994993530,3cyclictest33-21ksoftirqd/222:27:492
18994993530,3cyclictest33-21ksoftirqd/220:35:132
18994993530,3cyclictest33-21ksoftirqd/219:55:142
18994993530,3cyclictest33-21ksoftirqd/219:35:002
18994993530,3cyclictest33-21ksoftirqd/219:10:122
18994993529,4cyclictest33-21ksoftirqd/223:53:502
18994993529,3cyclictest33-21ksoftirqd/221:54:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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