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2026-09-15 - 05:00
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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 50 highest latencies:
System rackdslot4.osadl.org (updated Tue Sep 15, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59742234167,22sleep20-21swapper/219:08:202
58262207173,23sleep10-21swapper/119:06:301
57632205170,23sleep30-21swapper/319:05:393
59102200167,22sleep00-21swapper/019:07:300
138491650,1ptp4l401ktimersoftd/319:23:243
138491600,1ptp4l401ktimersoftd/300:05:383
179172590,7sleep1639899cyclictest21:40:261
138491560,1ptp4l401ktimersoftd/300:35:123
610625437,10sleep20-21swapper/219:10:012
138491530,1ptp4l401ktimersoftd/321:43:103
138491500,0ptp4l401ktimersoftd/321:04:323
149342480,2sleep30-21swapper/319:25:223
138491440,1ptp4l401ktimersoftd/321:31:313
6398994337,3cyclictest23378-21latency_hist20:50:011
1385914332,6phc2sys0-21swapper/319:10:003
138491430,0ptp4l401ktimersoftd/323:25:213
138491430,0ptp4l401ktimersoftd/323:25:213
639799420,2cyclictest121rcu_preempt21:06:050
138491420,0ptp4l401ktimersoftd/323:56:213
138491420,0ptp4l401ktimersoftd/323:56:213
138491410,1ptp4l401ktimersoftd/300:03:253
138491410,0ptp4l401ktimersoftd/320:03:063
6398994034,3cyclictest881-21cron20:05:001
6400993933,3cyclictest41-21ksoftirqd/320:10:003
639999399,28cyclictest0-21swapper/221:25:332
6400993832,4cyclictest41-21ksoftirqd/300:18:353
6400993832,3cyclictest41-21ksoftirqd/322:44:593
6399993832,4cyclictest33-21ksoftirqd/223:38:462
6399993810,27cyclictest0-21swapper/219:48:342
6398993831,5cyclictest25-21ksoftirqd/120:25:001
6400993732,3cyclictest41-21ksoftirqd/322:40:003
6400993732,3cyclictest41-21ksoftirqd/320:30:003
6400993732,3cyclictest41-21ksoftirqd/319:35:013
6400993731,3cyclictest41-21ksoftirqd/320:45:113
6399993733,3cyclictest33-21ksoftirqd/223:25:012
639999370,36cyclictest0-21swapper/222:50:242
6400993631,3cyclictest41-21ksoftirqd/322:45:173
6400993631,3cyclictest41-21ksoftirqd/300:25:003
6400993630,4cyclictest41-21ksoftirqd/321:53:293
6400993630,4cyclictest41-21ksoftirqd/321:16:343
6400993630,4cyclictest41-21ksoftirqd/319:35:493
6400993630,4cyclictest41-21ksoftirqd/300:14:183
6400993629,4cyclictest41-21ksoftirqd/322:20:113
6400993628,5cyclictest41-21ksoftirqd/322:20:003
6399993631,3cyclictest33-21ksoftirqd/221:04:372
6399993630,4cyclictest33-21ksoftirqd/223:11:022
6399993630,4cyclictest33-21ksoftirqd/223:09:142
6399993630,4cyclictest33-21ksoftirqd/200:15:092
6399993628,5cyclictest33-21ksoftirqd/222:20:102
6399993625,9cyclictest33-21ksoftirqd/222:25:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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