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2026-09-18 - 03:41
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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 Sep 18, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204171,22phc2sys0-21swapper/319:06:163
165842203169,22sleep20-21swapper/219:05:522
146832201168,22sleep10-21swapper/119:05:031
146822201168,22sleep00-21swapper/019:05:020
3269421810,3sleep11720599cyclictest00:00:221
3269421810,3sleep11720599cyclictest00:00:211
2749121260,3sleep31720799cyclictest23:50:173
138491610,1ptp4l401ktimersoftd/323:56:013
138491600,8ptp4l401ktimersoftd/319:39:383
138491600,8ptp4l401ktimersoftd/319:39:373
312102520,1sleep20-21swapper/219:35:252
312102520,1sleep20-21swapper/219:35:252
277132520,2sleep20-21swapper/222:45:172
16102520,1sleep20-21swapper/220:45:252
199022480,1sleep20-21swapper/222:30:162
138491480,1ptp4l401ktimersoftd/322:27:493
1720699460,44cyclictest0-21swapper/220:50:242
138491450,0ptp4l401ktimersoftd/320:55:543
138491440,1ptp4l401ktimersoftd/300:07:563
138491440,0ptp4l401ktimersoftd/322:55:173
1720699430,41cyclictest0-21swapper/221:25:232
17204994336,4cyclictest9912-21cron21:05:010
17207994232,6cyclictest41-21ksoftirqd/321:35:113
17207994232,6cyclictest41-21ksoftirqd/321:35:113
1720699429,30cyclictest25345-21df21:35:132
1720699429,30cyclictest25345-21df21:35:132
17207994136,3cyclictest41-21ksoftirqd/320:20:003
17205994111,28cyclictest0-21swapper/121:06:531
138491400,0ptp4l401ktimersoftd/321:19:553
17206993911,27cyclictest0-21swapper/200:25:222
1720699390,38cyclictest0-21swapper/222:35:242
1720699390,38cyclictest0-21swapper/222:35:242
17206993832,4cyclictest33-21ksoftirqd/222:18:532
17206993815,21cyclictest0-21swapper/200:00:332
17206993815,21cyclictest0-21swapper/200:00:332
17206993811,25cyclictest0-21swapper/200:10:332
17207993733,2cyclictest41-21ksoftirqd/320:40:003
17207993732,3cyclictest41-21ksoftirqd/323:05:003
17207993731,4cyclictest41-21ksoftirqd/300:22:303
17206993731,4cyclictest33-21ksoftirqd/219:59:572
17205993731,4cyclictest25-21ksoftirqd/122:01:231
17205993731,4cyclictest25-21ksoftirqd/121:10:201
17205993731,4cyclictest25-21ksoftirqd/100:36:521
138491370,0ptp4l401ktimersoftd/322:30:233
17207993632,3cyclictest41-21ksoftirqd/319:29:593
17207993632,2cyclictest41-21ksoftirqd/321:40:143
17207993631,3cyclictest41-21ksoftirqd/321:35:003
17207993630,4cyclictest41-21ksoftirqd/323:19:003
17207993630,4cyclictest41-21ksoftirqd/322:37:353
17207993630,4cyclictest41-21ksoftirqd/322:37:353
17207993630,4cyclictest41-21ksoftirqd/321:53:223
17207993630,4cyclictest41-21ksoftirqd/319:55:103
17207993630,3cyclictest41-21ksoftirqd/319:40:023
17207993629,5cyclictest41-21ksoftirqd/322:01:573
17206993630,4cyclictest33-21ksoftirqd/223:54:082
17206993630,4cyclictest33-21ksoftirqd/220:06:542
17206993630,4cyclictest33-21ksoftirqd/220:06:542
17206993630,4cyclictest33-21ksoftirqd/219:28:482
17205993631,3cyclictest25-21ksoftirqd/120:50:021
17205993630,4cyclictest25-21ksoftirqd/119:24:531
17204993631,3cyclictest9-21ksoftirqd/019:35:010
17204993630,4cyclictest9-21ksoftirqd/021:42:080
17204993630,4cyclictest9-21ksoftirqd/021:39:350
17204993630,4cyclictest9-21ksoftirqd/021:39:350
138491360,0ptp4l401ktimersoftd/320:40:283
17207993531,2cyclictest41-21ksoftirqd/323:50:013
17207993530,3cyclictest41-21ksoftirqd/323:25:253
17207993530,3cyclictest41-21ksoftirqd/322:10:263
17207993530,3cyclictest41-21ksoftirqd/322:00:003
17207993529,4cyclictest41-21ksoftirqd/319:31:453
17207993529,4cyclictest41-21ksoftirqd/300:03:563
17207993529,4cyclictest41-21ksoftirqd/300:03:563
17206993530,3cyclictest33-21ksoftirqd/221:05:012
17206993529,4cyclictest33-21ksoftirqd/223:48:392
17206993529,4cyclictest33-21ksoftirqd/223:29:052
17206993529,4cyclictest33-21ksoftirqd/222:59:532
17206993529,4cyclictest33-21ksoftirqd/220:04:132
17205993530,3cyclictest25-21ksoftirqd/123:00:121
17205993530,3cyclictest25-21ksoftirqd/122:27:501
17205993530,3cyclictest25-21ksoftirqd/121:32:341
17205993529,4cyclictest25-21ksoftirqd/123:40:121
17205993529,4cyclictest25-21ksoftirqd/121:54:491
17205993529,4cyclictest25-21ksoftirqd/121:49:111
17204993530,3cyclictest9-21ksoftirqd/020:50:110
17204993530,3cyclictest9-21ksoftirqd/000:37:560
17204993529,4cyclictest9-21ksoftirqd/021:51:390
17204993529,4cyclictest9-21ksoftirqd/000:21:030
138491350,10ptp4l401ktimersoftd/323:40:123
17207993430,3cyclictest41-21ksoftirqd/320:20:173
17207993430,2cyclictest41-21ksoftirqd/300:40:003
17207993429,3cyclictest41-21ksoftirqd/322:15:223
17207993429,3cyclictest41-21ksoftirqd/321:03:493
17207993429,3cyclictest41-21ksoftirqd/320:30:183
17207993429,3cyclictest41-21ksoftirqd/300:30:253
17207993429,3cyclictest41-21ksoftirqd/300:15:273
17207993428,4cyclictest41-21ksoftirqd/323:24:013
17207993428,4cyclictest41-21ksoftirqd/323:13:373
17207993428,4cyclictest41-21ksoftirqd/322:50:013
17207993428,4cyclictest41-21ksoftirqd/320:02:063
17207993428,3cyclictest41-21ksoftirqd/320:50:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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