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2026-03-13 - 07:05
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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 Mar 13, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
287892246203,33sleep20-21swapper/219:08:592
138591228162,22phc2sys0-21swapper/319:07:273
286952205171,23sleep10-21swapper/119:07:451
287252199166,22sleep00-21swapper/019:08:080
812621570,2sleep30-21swapper/320:35:243
29319996624,7cyclictest9-21ksoftirqd/023:10:210
29319996624,7cyclictest9-21ksoftirqd/023:10:200
29319996623,4cyclictest9-21ksoftirqd/021:39:590
29319996122,7cyclictest9-21ksoftirqd/023:26:530
2932099607,6cyclictest25-21ksoftirqd/100:07:081
29319996022,5cyclictest9-21ksoftirqd/020:05:000
29319996021,6cyclictest9-21ksoftirqd/022:41:090
29319996020,7cyclictest9-21ksoftirqd/021:40:270
29319996019,9cyclictest9-21ksoftirqd/020:35:260
29319995923,4cyclictest9-21ksoftirqd/022:53:030
29319995923,3cyclictest9-21ksoftirqd/023:36:480
29319995922,4cyclictest9-21ksoftirqd/021:46:490
29319995921,4cyclictest9-21ksoftirqd/022:29:040
29319995825,9cyclictest9-21ksoftirqd/022:35:180
29319995822,6cyclictest9-21ksoftirqd/022:17:290
29319995822,4cyclictest9-21ksoftirqd/023:47:230
29319995821,9cyclictest9-21ksoftirqd/021:20:140
29319995820,4cyclictest9-21ksoftirqd/021:12:430
29319995820,4cyclictest9-21ksoftirqd/019:47:460
138491580,1ptp4l401ktimersoftd/323:10:203
138491580,1ptp4l401ktimersoftd/323:10:203
29319995726,10cyclictest9-21ksoftirqd/000:00:190
29319995721,4cyclictest9-21ksoftirqd/019:35:070
29319995720,4cyclictest9-21ksoftirqd/020:47:120
29319995718,4cyclictest9-21ksoftirqd/000:25:290
29319995621,4cyclictest9-21ksoftirqd/019:31:090
29319995620,4cyclictest9-21ksoftirqd/023:06:550
29319995620,10cyclictest9-21ksoftirqd/023:40:260
29319995619,4cyclictest9-21ksoftirqd/022:58:210
29319995615,10cyclictest9-21ksoftirqd/000:25:000
29319995526,8cyclictest9-21ksoftirqd/019:20:130
29319995521,6cyclictest9-21ksoftirqd/023:30:260
29319995521,4cyclictest9-21ksoftirqd/022:08:470
29319995515,7cyclictest9-21ksoftirqd/021:00:250
29319995423,2cyclictest121rcu_preempt23:03:310
29319995422,10cyclictest9-21ksoftirqd/023:20:190
29319995416,6cyclictest9-21ksoftirqd/023:55:270
29319995321,8cyclictest9-21ksoftirqd/019:40:270
29319995321,7cyclictest9-21ksoftirqd/022:45:270
29319995321,10cyclictest9-21ksoftirqd/022:30:280
29319995319,8cyclictest9-21ksoftirqd/000:35:140
29319995315,4cyclictest9-21ksoftirqd/020:40:120
181842530,4sleep118187-21phc2sys-jitter22:00:221
181842530,4sleep118187-21phc2sys-jitter22:00:221
29319995215,7cyclictest9-21ksoftirqd/022:20:140
29319995214,3cyclictest9-21ksoftirqd/020:55:200
29319995213,10cyclictest9-21ksoftirqd/020:10:230
202492510,2sleep20-21swapper/219:55:192
2931999503,3cyclictest9-21ksoftirqd/023:15:190
29319995021,8cyclictest9-21ksoftirqd/020:05:230
29319995017,4cyclictest9-21ksoftirqd/020:15:130
292332500,2sleep30-21swapper/300:35:133
2931999495,3cyclictest9-21ksoftirqd/019:10:170
2931999494,3cyclictest9-21ksoftirqd/000:30:240
29319994915,6cyclictest9-21ksoftirqd/020:25:140
29321994817,5cyclictest33-21ksoftirqd/200:20:212
29320994815,4cyclictest25-21ksoftirqd/100:20:131
29319994819,8cyclictest9-21ksoftirqd/020:35:000
29319994818,10cyclictest9-21ksoftirqd/019:15:140
29319994815,3cyclictest9-21ksoftirqd/000:18:320
29319994813,5cyclictest9-21ksoftirqd/019:50:210
29320994716,4cyclictest25-21ksoftirqd/120:45:131
29320994716,4cyclictest25-21ksoftirqd/119:30:191
29320994713,5cyclictest25-21ksoftirqd/121:55:161
2931999479,4cyclictest9-21ksoftirqd/020:20:190
2931999479,3cyclictest9-21ksoftirqd/021:30:250
2931999475,3cyclictest9-21ksoftirqd/000:05:230
29319994717,8cyclictest9-21ksoftirqd/022:10:190
2931999462,3cyclictest9-21ksoftirqd/021:25:230
29320994514,4cyclictest25-21ksoftirqd/121:00:131
29320994512,3cyclictest25-21ksoftirqd/123:45:011
2931999454,2cyclictest9-21ksoftirqd/021:55:010
2931999453,2cyclictest9-21ksoftirqd/020:50:210
2931999452,3cyclictest9-21ksoftirqd/022:00:240
2931999452,3cyclictest9-21ksoftirqd/022:00:240
2931999452,2cyclictest9-21ksoftirqd/019:25:220
2931999452,2cyclictest9-21ksoftirqd/000:10:260
2931999450,2cyclictest9-21ksoftirqd/019:55:230
2931999445,3cyclictest9-21ksoftirqd/021:55:170
2931999443,2cyclictest9-21ksoftirqd/021:15:230
50798430,8rtkit-daemon0-21swapper/121:53:321
2932099435,3cyclictest121rcu_preempt20:30:011
29320994330,10cyclictest25-21ksoftirqd/122:35:001
29320994313,4cyclictest25-21ksoftirqd/121:25:141
2931999432,3cyclictest9-21ksoftirqd/021:05:230
2931999431,2cyclictest9-21ksoftirqd/023:50:200
138491430,0ptp4l401ktimersoftd/323:30:273
138491430,0ptp4l401ktimersoftd/321:40:013
138491430,0ptp4l401ktimersoftd/321:38:073
138491430,0ptp4l401ktimersoftd/319:35:073
2932199422,8cyclictest121rcu_preempt20:29:592
29320994237,3cyclictest25-21ksoftirqd/121:40:001
29320994214,4cyclictest25-21ksoftirqd/120:15:131
29320994211,4cyclictest25-21ksoftirqd/121:10:221
29320994210,3cyclictest25-21ksoftirqd/119:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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