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2026-08-07 - 11:25
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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 07, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591220153,23phc2sys0-21swapper/319:05:303
301872203170,22sleep00-21swapper/019:06:400
302422202168,22sleep20-21swapper/219:07:192
301882201168,22sleep10-21swapper/119:06:411
3126821810,6sleep33089399cyclictest21:20:183
1652821550,7sleep03089099cyclictest00:05:190
154162760,2sleep20-21swapper/200:05:012
269952610,2sleep00-21swapper/021:10:200
213042600,2sleep20-21swapper/200:15:162
189952580,5sleep233-21ksoftirqd/219:50:142
214302570,5sleep321436-21irqrtprio23:10:183
214302570,5sleep321436-21irqrtprio23:10:183
138491550,1ptp4l401ktimersoftd/321:30:273
3089199470,45cyclictest0-21swapper/121:30:231
30890994740,4cyclictest20306-21cron23:10:000
3089199450,43cyclictest0-21swapper/119:40:141
3089199450,43cyclictest0-21swapper/119:40:141
138491430,0ptp4l401ktimersoftd/300:07:363
30892994237,3cyclictest33-21ksoftirqd/222:00:002
138491420,0ptp4l401ktimersoftd/319:36:173
30893994135,3cyclictest41-21ksoftirqd/300:40:013
30893994128,9cyclictest41-21ksoftirqd/321:50:283
30892994136,3cyclictest13370-21awk19:40:002
138491410,1ptp4l401ktimersoftd/300:22:493
138491410,1ptp4l401ktimersoftd/300:15:553
138491410,0ptp4l401ktimersoftd/319:34:013
138491400,0ptp4l401ktimersoftd/323:35:003
138491400,0ptp4l401ktimersoftd/321:55:203
30893993933,3cyclictest41-21ksoftirqd/300:05:013
3089299390,38cyclictest0-21swapper/223:55:332
3089199391,35cyclictest11549-21diskstats20:40:131
30890993933,3cyclictest8072-21sh21:40:000
30893993833,3cyclictest41-21ksoftirqd/322:30:003
30893993833,3cyclictest41-21ksoftirqd/319:55:003
3089299380,36cyclictest0-21swapper/220:40:032
3089299380,2cyclictest0-21swapper/223:30:232
30891993810,26cyclictest0-21swapper/122:41:031
30890993833,3cyclictest9-21ksoftirqd/020:25:000
30890993832,3cyclictest9-21ksoftirqd/020:30:000
138491380,1ptp4l401ktimersoftd/321:35:133
30893993731,3cyclictest41-21ksoftirqd/320:09:593
30893993730,4cyclictest41-21ksoftirqd/323:47:053
30893993725,9cyclictest41-21ksoftirqd/319:25:263
3089299370,36cyclictest0-21swapper/221:10:232
3089299370,36cyclictest0-21swapper/219:30:232
30891993731,4cyclictest25-21ksoftirqd/123:48:591
3089099373,3cyclictest121rcu_preempt22:15:140
30890993732,3cyclictest9-21ksoftirqd/021:40:150
30890993732,3cyclictest9-21ksoftirqd/019:20:010
30890993731,3cyclictest9-21ksoftirqd/021:25:130
30890993731,3cyclictest9-21ksoftirqd/019:34:590
138491370,1ptp4l401ktimersoftd/320:39:203
30893993631,3cyclictest41-21ksoftirqd/322:50:003
30893993631,3cyclictest41-21ksoftirqd/319:20:003
30893993630,4cyclictest41-21ksoftirqd/323:30:403
30893993630,4cyclictest41-21ksoftirqd/320:19:203
30893993630,3cyclictest41-21ksoftirqd/323:55:213
30893993630,3cyclictest41-21ksoftirqd/322:55:003
30893993629,4cyclictest41-21ksoftirqd/320:00:103
30892993629,5cyclictest33-21ksoftirqd/200:27:202
30892993629,5cyclictest33-21ksoftirqd/200:27:202
30892993629,4cyclictest33-21ksoftirqd/223:18:112
30892993629,4cyclictest33-21ksoftirqd/222:16:132
3089299360,35cyclictest0-21swapper/223:40:332
3089199367,27cyclictest0-21swapper/121:55:331
30891993630,4cyclictest25-21ksoftirqd/122:51:261
30891993630,4cyclictest25-21ksoftirqd/121:00:461
30891993630,4cyclictest25-21ksoftirqd/120:12:561
30891993629,4cyclictest25-21ksoftirqd/120:45:011
30890993631,3cyclictest9-21ksoftirqd/023:20:260
30890993631,3cyclictest9-21ksoftirqd/019:25:010
30890993629,5cyclictest9-21ksoftirqd/000:16:260
3089099361,2cyclictest121rcu_preempt23:33:030
30893993530,3cyclictest41-21ksoftirqd/323:50:333
30893993530,3cyclictest41-21ksoftirqd/322:05:003
30893993530,3cyclictest41-21ksoftirqd/320:00:003
30893993530,3cyclictest41-21ksoftirqd/319:50:003
30893993529,3cyclictest41-21ksoftirqd/322:40:213
30892993530,3cyclictest33-21ksoftirqd/200:20:122
30892993529,4cyclictest33-21ksoftirqd/221:23:422
30892993529,4cyclictest33-21ksoftirqd/219:56:292
30892993529,4cyclictest33-21ksoftirqd/219:48:462
30892993528,4cyclictest33-21ksoftirqd/222:38:562
30892993528,4cyclictest33-21ksoftirqd/221:30:242
30892993528,4cyclictest33-21ksoftirqd/220:37:322
30892993527,5cyclictest33-21ksoftirqd/223:54:142
3089199356,27cyclictest0-21swapper/119:51:331
30891993530,3cyclictest25-21ksoftirqd/122:32:011
30891993530,3cyclictest25-21ksoftirqd/122:32:011
30891993530,3cyclictest25-21ksoftirqd/100:09:591
30891993529,4cyclictest25-21ksoftirqd/122:49:301
30891993529,4cyclictest25-21ksoftirqd/122:19:411
30891993529,4cyclictest25-21ksoftirqd/120:21:431
30891993529,4cyclictest25-21ksoftirqd/100:02:591
30891993513,3cyclictest21350-21grep22:05:151
30890993530,3cyclictest9-21ksoftirqd/000:35:010
30890993530,3cyclictest9-21ksoftirqd/000:25:120
30890993530,3cyclictest9-21ksoftirqd/000:25:120
30890993529,4cyclictest9-21ksoftirqd/022:47:400
30890993529,4cyclictest9-21ksoftirqd/022:29:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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