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2026-06-16 - 17:27
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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 Tue Jun 16, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41321620,4sleep10-21swapper/108:25:221
2853221390,6sleep32949499cyclictest10:35:173
29494997030,8cyclictest41-21ksoftirqd/308:20:003
29494996927,8cyclictest41-21ksoftirqd/311:50:013
134491690,8ptp4l0-21swapper/007:05:140
29494996634,8cyclictest41-21ksoftirqd/308:10:263
29494996530,7cyclictest41-21ksoftirqd/308:05:003
29494996530,7cyclictest41-21ksoftirqd/308:05:003
29494996426,8cyclictest41-21ksoftirqd/312:00:143
29494996328,7cyclictest41-21ksoftirqd/311:40:173
29494996328,10cyclictest41-21ksoftirqd/307:30:253
29494996327,8cyclictest41-21ksoftirqd/311:12:473
29494996327,8cyclictest41-21ksoftirqd/307:42:053
29494996327,4cyclictest41-21ksoftirqd/309:25:003
29494996322,4cyclictest41-21ksoftirqd/308:35:143
29494996317,7cyclictest41-21ksoftirqd/309:35:463
29494996226,7cyclictest41-21ksoftirqd/308:05:403
29494996224,7cyclictest41-21ksoftirqd/312:40:003
134491620,4ptp4l0-21swapper/107:55:171
29494996128,7cyclictest41-21ksoftirqd/307:50:283
29494996127,4cyclictest41-21ksoftirqd/309:05:013
29494996126,6cyclictest41-21ksoftirqd/310:50:003
29494996125,8cyclictest41-21ksoftirqd/307:36:433
29494996125,7cyclictest41-21ksoftirqd/308:54:183
29494996125,7cyclictest41-21ksoftirqd/308:54:183
29494996124,7cyclictest41-21ksoftirqd/311:53:223
134491610,4ptp4l31816-21apt-get07:15:120
29494996031,4cyclictest41-21ksoftirqd/310:55:143
29494996029,7cyclictest41-21ksoftirqd/309:10:283
29494996028,8cyclictest41-21ksoftirqd/307:17:193
29494996027,7cyclictest41-21ksoftirqd/310:33:263
29494996024,9cyclictest41-21ksoftirqd/311:33:333
29494996023,8cyclictest41-21ksoftirqd/312:26:493
134491600,3ptp4l0-21swapper/209:10:252
29494995927,3cyclictest41-21ksoftirqd/309:45:183
29494995925,7cyclictest41-21ksoftirqd/310:54:463
29494995925,7cyclictest41-21ksoftirqd/308:44:593
29494995924,7cyclictest41-21ksoftirqd/312:05:253
134491590,5ptp4l0-21swapper/109:45:111
134491590,3ptp4l0-21swapper/108:30:201
2949499585,7cyclictest18237-21apt-get10:15:013
29494995821,9cyclictest41-21ksoftirqd/309:30:223
134491580,4ptp4l0-21swapper/308:45:283
134491580,4ptp4l0-21swapper/012:08:560
134491580,4ptp4l0-21swapper/008:07:040
29494995730,7cyclictest41-21ksoftirqd/312:10:253
29494995726,6cyclictest41-21ksoftirqd/310:25:253
29494995720,8cyclictest41-21ksoftirqd/311:27:193
134491570,3ptp4l25-21ksoftirqd/107:06:201
2949499565,4cyclictest41-21ksoftirqd/309:20:003
29494995626,8cyclictest41-21ksoftirqd/311:20:213
29494995622,8cyclictest41-21ksoftirqd/308:24:013
134491560,3ptp4l0-21swapper/307:10:173
134491560,3ptp4l0-21swapper/110:16:401
134491560,3ptp4l0-21swapper/107:45:161
134491560,3ptp4l0-21swapper/007:50:160
29494995531,10cyclictest41-21ksoftirqd/310:20:213
29494995526,8cyclictest41-21ksoftirqd/307:55:273
29494995421,7cyclictest41-21ksoftirqd/310:02:423
29494995417,8cyclictest41-21ksoftirqd/310:10:013
134491540,4ptp4l0-21swapper/007:32:230
134491540,3ptp4l0-21swapper/110:50:181
134491540,3ptp4l0-21swapper/109:35:041
134491540,3ptp4l0-21swapper/009:55:270
134491540,3ptp4l0-21swapper/008:26:300
2949499535,6cyclictest41-21ksoftirqd/312:20:143
2949499535,3cyclictest121rcu_preempt12:18:153
2949499533,8cyclictest41-21ksoftirqd/308:30:173
29494995322,7cyclictest41-21ksoftirqd/312:34:443
134491530,4ptp4l0-21swapper/010:58:310
134491530,3ptp4l0-21swapper/109:44:591
134491530,3ptp4l0-21swapper/009:15:250
2949499526,3cyclictest41-21ksoftirqd/309:50:153
2949499524,7cyclictest41-21ksoftirqd/310:45:003
29494995219,7cyclictest41-21ksoftirqd/311:59:233
2949499521,6cyclictest41-21ksoftirqd/311:00:233
134491520,5ptp4l0-21swapper/010:14:410
134491520,5ptp4l0-21swapper/008:31:200
134491520,4ptp4l0-21swapper/008:45:590
134491520,12ptp4l0-21swapper/010:25:140
2949499512,7cyclictest0-21swapper/308:25:213
29494995119,7cyclictest41-21ksoftirqd/311:06:053
2949499511,7cyclictest41-21ksoftirqd/307:30:003
2949499510,6cyclictest41-21ksoftirqd/311:15:163
29491995121,4cyclictest9-21ksoftirqd/008:00:000
134491510,4ptp4l0-21swapper/310:15:143
134491510,4ptp4l0-21swapper/011:56:230
2949499500,4cyclictest121rcu_preempt09:25:273
29491995015,4cyclictest9-21ksoftirqd/010:45:110
134491500,4ptp4l0-21swapper/109:14:401
134491500,4ptp4l0-21swapper/009:49:000
134491500,3ptp4l0-21swapper/307:24:143
134491500,12ptp4l0-21swapper/012:35:330
2949499493,7cyclictest41-21ksoftirqd/307:49:373
2949499492,6cyclictest0-21swapper/308:55:253
29494994916,7cyclictest41-21ksoftirqd/311:35:253
29494994916,7cyclictest41-21ksoftirqd/311:35:253
29491994919,7cyclictest9-21ksoftirqd/012:10:230
134491490,4ptp4l0-21swapper/209:26:322
134491490,4ptp4l0-21swapper/112:10:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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