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2026-04-10 - 05:25
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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 rackdslot1.osadl.org (updated Fri Apr 10, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491770,4ptp4l0-21swapper/220:35:242
16418996824,3cyclictest9-21ksoftirqd/019:55:180
134491670,4ptp4l0-21swapper/120:15:281
16418996623,4cyclictest9-21ksoftirqd/022:50:150
274742630,6sleep00-21swapper/021:50:200
16419996126,5cyclictest25-21ksoftirqd/121:30:001
134491610,9ptp4l0-21swapper/223:30:252
134491610,4ptp4l0-21swapper/219:32:452
16418996018,4cyclictest9-21ksoftirqd/020:11:440
134491600,5ptp4l0-21swapper/319:05:003
16418995916,4cyclictest9-21ksoftirqd/022:30:250
134491590,6ptp4l0-21swapper/019:05:020
134491590,4ptp4l0-21swapper/319:30:243
1641999583,40cyclictest134691getstats00:19:541
16418995830,9cyclictest9-21ksoftirqd/021:55:300
134491580,4ptp4l2429-21taskset20:59:352
16419995726,3cyclictest25-21ksoftirqd/100:35:171
16419995724,3cyclictest25-21ksoftirqd/122:25:261
16418995732,3cyclictest9-21ksoftirqd/000:09:550
134491570,3ptp4l0-21swapper/223:15:002
134491570,18ptp4l0-21swapper/321:07:033
16419995625,6cyclictest25-21ksoftirqd/123:05:191
16419995624,3cyclictest25-21ksoftirqd/120:10:221
16418995621,9cyclictest9-21ksoftirqd/019:55:000
134491560,3ptp4l0-21swapper/322:54:073
134491560,3ptp4l0-21swapper/200:37:212
134491560,3ptp4l0-21swapper/121:05:131
134491560,3ptp4l0-21swapper/100:05:231
134491550,4ptp4l0-21swapper/000:20:170
16419995422,3cyclictest25-21ksoftirqd/119:15:201
1641899547,3cyclictest9-21ksoftirqd/023:15:280
134491540,4ptp4l0-21swapper/322:25:533
134491540,3ptp4l27614-21taskset19:33:080
134491540,3ptp4l0-21swapper/319:56:593
16419995324,3cyclictest25-21ksoftirqd/123:20:271
16419995321,4cyclictest25-21ksoftirqd/122:20:201
1641899537,3cyclictest9-21ksoftirqd/023:35:010
16418995322,4cyclictest9-21ksoftirqd/023:35:160
16418995322,4cyclictest9-21ksoftirqd/023:35:160
134491530,4ptp4l0-21swapper/119:08:261
134491530,3ptp4l0-21swapper/221:15:142
134491530,3ptp4l0-21swapper/219:38:282
16419995220,4cyclictest25-21ksoftirqd/123:50:251
16418995224,3cyclictest9-21ksoftirqd/020:02:300
16418995214,7cyclictest9-21ksoftirqd/022:40:250
134491520,12ptp4l0-21swapper/223:40:272
16419995121,4cyclictest25-21ksoftirqd/119:25:251
16418995119,3cyclictest121rcu_preempt22:20:180
134491510,4ptp4l0-21swapper/221:45:022
134491510,4ptp4l0-21swapper/122:51:011
134491510,3ptp4l0-21swapper/319:35:133
134491510,3ptp4l0-21swapper/221:35:002
16419995021,3cyclictest25-21ksoftirqd/123:35:241
16419995021,3cyclictest25-21ksoftirqd/123:35:241
16419995018,4cyclictest25-21ksoftirqd/123:50:011
16419995018,4cyclictest25-21ksoftirqd/122:00:001
134491500,4ptp4l0-21swapper/323:04:373
134491500,4ptp4l0-21swapper/321:37:213
134491500,4ptp4l0-21swapper/321:23:053
134491500,4ptp4l0-21swapper/220:52:032
134491500,4ptp4l0-21swapper/120:07:361
134491500,4ptp4l0-21swapper/022:46:190
134491500,4ptp4l0-21swapper/022:15:400
134491500,4ptp4l0-21swapper/022:11:510
134491500,3ptp4l0-21swapper/221:27:142
134491500,3ptp4l0-21swapper/123:11:461
16419994920,4cyclictest25-21ksoftirqd/121:20:201
16419994917,4cyclictest25-21ksoftirqd/120:50:211
16419994917,3cyclictest25-21ksoftirqd/122:45:171
16418994927,2cyclictest9-21ksoftirqd/021:25:370
16418994923,4cyclictest9-21ksoftirqd/021:19:450
134491490,4ptp4l0-21swapper/221:51:372
134491490,3ptp4l0-21swapper/300:37:383
134491490,3ptp4l0-21swapper/223:45:312
134491490,3ptp4l0-21swapper/121:41:131
16419994822,4cyclictest25-21ksoftirqd/122:35:241
16419994817,3cyclictest25-21ksoftirqd/123:30:261
16419994813,4cyclictest25-21ksoftirqd/123:15:201
1641899487,7cyclictest9-21ksoftirqd/020:15:430
1641899487,3cyclictest9-21ksoftirqd/021:13:270
16418994824,10cyclictest9-21ksoftirqd/023:10:000
16418994810,4cyclictest9-21ksoftirqd/023:45:180
134491480,4ptp4l0-21swapper/323:32:433
134491480,4ptp4l0-21swapper/323:22:093
134491480,4ptp4l0-21swapper/319:49:393
134491480,4ptp4l0-21swapper/300:03:213
134491480,4ptp4l0-21swapper/223:59:182
134491480,4ptp4l0-21swapper/222:01:392
134491480,4ptp4l0-21swapper/219:18:162
134491480,4ptp4l0-21swapper/121:34:441
134491480,4ptp4l0-21swapper/120:38:071
134491480,4ptp4l0-21swapper/100:13:431
134491480,4ptp4l0-21swapper/020:24:500
134491480,3ptp4l0-21swapper/322:30:493
134491480,3ptp4l0-21swapper/320:14:163
134491480,3ptp4l0-21swapper/223:00:282
16419994733,3cyclictest25-21ksoftirqd/122:20:001
16419994732,4cyclictest25-21ksoftirqd/119:35:161
16419994718,3cyclictest25-21ksoftirqd/119:57:431
16419994717,3cyclictest25-21ksoftirqd/123:25:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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