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2026-04-15 - 03:29
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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 rackdslot1.osadl.org (updated Wed Apr 15, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491640,3ptp4l31333-21apt00:20:002
134491630,17ptp4l20345-21processes21:35:252
16262996233,4cyclictest9-21ksoftirqd/021:45:010
16262996229,6cyclictest9-21ksoftirqd/022:45:250
16262996229,5cyclictest9-21ksoftirqd/022:15:000
134491620,6ptp4l0-21swapper/219:06:152
134491620,4ptp4l16459-21timerwakeupswit22:35:271
134491620,4ptp4l0-21swapper/323:30:213
16262996131,4cyclictest9-21ksoftirqd/000:30:140
16262996032,6cyclictest9-21ksoftirqd/022:40:250
16262996032,6cyclictest9-21ksoftirqd/022:40:250
134491600,4ptp4l0-21swapper/122:40:261
134491600,4ptp4l0-21swapper/122:40:261
16262995928,3cyclictest9-21ksoftirqd/019:30:190
16262995925,7cyclictest9-21ksoftirqd/021:35:190
134491590,4ptp4l0-21swapper/200:20:242
134491590,4ptp4l0-21swapper/119:16:541
16262995832,6cyclictest9-21ksoftirqd/023:30:010
16262995828,3cyclictest9-21ksoftirqd/022:29:590
134491580,4ptp4l0-21swapper/319:53:463
134491580,4ptp4l0-21swapper/119:20:151
134491580,3ptp4l0-21swapper/122:55:301
16262995731,6cyclictest9-21ksoftirqd/023:40:130
16262995727,4cyclictest9-21ksoftirqd/020:04:590
16262995726,9cyclictest9-21ksoftirqd/020:55:140
134491570,4ptp4l0-21swapper/320:04:323
16262995625,3cyclictest9-21ksoftirqd/000:10:200
16262995623,3cyclictest9-21ksoftirqd/022:03:530
134491560,3ptp4l0-21swapper/220:10:142
134491560,3ptp4l0-21swapper/122:51:011
187482550,4sleep11626399cyclictest20:25:001
1626299555,6cyclictest9-21ksoftirqd/000:30:010
16262995520,5cyclictest9-21ksoftirqd/020:15:000
134491550,4ptp4l0-21swapper/223:33:042
134491550,3ptp4l0-21swapper/123:48:151
134491550,3ptp4l0-21swapper/120:11:211
16262995424,6cyclictest9-21ksoftirqd/019:35:270
16262995421,5cyclictest9-21ksoftirqd/022:55:190
16262995419,3cyclictest9-21ksoftirqd/019:10:250
16262995322,3cyclictest9-21ksoftirqd/021:02:400
16262995319,5cyclictest9-21ksoftirqd/022:05:190
16262995319,5cyclictest9-21ksoftirqd/022:05:180
134491530,3ptp4l0-21swapper/120:45:521
134491530,11ptp4l0-21swapper/223:00:212
1626299525,6cyclictest9-21ksoftirqd/019:50:000
1626299523,4cyclictest9-21ksoftirqd/019:25:230
1626299523,3cyclictest121rcu_preempt20:25:180
16262995224,6cyclictest9-21ksoftirqd/022:35:150
16262995224,6cyclictest9-21ksoftirqd/021:20:220
16262995224,3cyclictest9-21ksoftirqd/020:50:170
16262995219,3cyclictest9-21ksoftirqd/023:45:270
1626299521,6cyclictest9-21ksoftirqd/020:20:220
134491520,4ptp4l1626399cyclictest19:50:111
1626299515,5cyclictest9-21ksoftirqd/020:45:160
1626299514,3cyclictest9-21ksoftirqd/019:40:180
1626299512,6cyclictest9-21ksoftirqd/020:30:210
1626299512,5cyclictest9-21ksoftirqd/019:50:120
1626299512,3cyclictest0-21swapper/021:25:240
16262995118,5cyclictest9-21ksoftirqd/020:15:260
16262995118,4cyclictest9-21ksoftirqd/000:20:270
134491510,4ptp4l0-21swapper/100:25:181
134491510,4ptp4l0-21swapper/023:36:540
1626299503,8cyclictest9-21ksoftirqd/022:15:240
1626299503,6cyclictest9-21ksoftirqd/023:10:220
1626299502,6cyclictest9-21ksoftirqd/023:55:280
16262995020,3cyclictest9-21ksoftirqd/000:17:550
16262995019,5cyclictest9-21ksoftirqd/021:50:190
16262995019,3cyclictest9-21ksoftirqd/020:09:110
16262995018,3cyclictest9-21ksoftirqd/021:05:490
16262995018,3cyclictest9-21ksoftirqd/019:18:010
134491500,5ptp4l0-21swapper/122:24:121
134491500,4ptp4l0-21swapper/322:00:143
134491500,4ptp4l0-21swapper/300:37:533
134491500,4ptp4l0-21swapper/223:23:412
134491500,4ptp4l0-21swapper/220:15:252
134491500,4ptp4l0-21swapper/200:08:462
134491500,3ptp4l0-21swapper/119:55:261
134491500,3ptp4l0-21swapper/100:05:001
1626299491,7cyclictest121rcu_preempt23:23:440
16262994917,4cyclictest9-21ksoftirqd/021:48:210
16262994916,4cyclictest9-21ksoftirqd/021:11:200
134491490,4ptp4l0-21swapper/222:00:062
134491490,4ptp4l0-21swapper/219:21:532
134491490,4ptp4l0-21swapper/200:34:272
134491490,4ptp4l0-21swapper/123:58:251
134491490,4ptp4l0-21swapper/120:00:321
134491490,10ptp4l0-21swapper/321:40:263
1626299485,3cyclictest9-21ksoftirqd/021:30:290
16262994837,3cyclictest9-21ksoftirqd/021:55:510
16262994836,3cyclictest9-21ksoftirqd/000:00:190
1626299483,3cyclictest9-21ksoftirqd/019:55:130
1626299483,3cyclictest0-21swapper/020:45:010
1626299481,4cyclictest0-21swapper/019:25:000
1626299480,2cyclictest121rcu_preempt00:35:120
134491480,9ptp4l0-21swapper/020:37:270
134491480,5ptp4l0-21swapper/223:12:402
134491480,4ptp4l0-21swapper/320:14:163
134491480,4ptp4l0-21swapper/223:51:332
134491480,4ptp4l0-21swapper/222:43:542
134491480,4ptp4l0-21swapper/222:43:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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