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2026-03-26 - 20:52
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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 Thu Mar 26, 2026 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28615996728,8cyclictest41-21ksoftirqd/308:37:433
28615996629,4cyclictest41-21ksoftirqd/312:25:013
28615996629,4cyclictest41-21ksoftirqd/312:25:013
28615996531,10cyclictest41-21ksoftirqd/307:25:013
28615996430,4cyclictest41-21ksoftirqd/311:45:133
28615996429,4cyclictest41-21ksoftirqd/307:50:003
28615996424,10cyclictest41-21ksoftirqd/307:38:353
134491640,5ptp4l0-21swapper/109:30:151
28615996331,7cyclictest41-21ksoftirqd/311:40:153
28615996325,3cyclictest41-21ksoftirqd/310:15:213
28615996324,8cyclictest41-21ksoftirqd/308:11:473
28615996233,3cyclictest41-21ksoftirqd/309:00:173
28615996227,7cyclictest41-21ksoftirqd/308:21:103
28615996226,7cyclictest41-21ksoftirqd/310:20:233
28615996225,10cyclictest41-21ksoftirqd/309:30:203
28615996132,8cyclictest41-21ksoftirqd/309:10:003
28615996125,8cyclictest41-21ksoftirqd/311:30:153
28615996124,7cyclictest41-21ksoftirqd/311:11:243
28615996031,7cyclictest41-21ksoftirqd/308:40:223
28615996028,8cyclictest41-21ksoftirqd/307:30:193
28615996027,3cyclictest41-21ksoftirqd/309:45:003
28615996024,8cyclictest41-21ksoftirqd/309:24:333
28615996024,7cyclictest41-21ksoftirqd/312:13:383
28615996024,7cyclictest41-21ksoftirqd/310:01:073
28615996023,7cyclictest41-21ksoftirqd/310:55:003
119782600,4sleep20-21swapper/210:00:212
28615995929,7cyclictest41-21ksoftirqd/312:05:163
28615995929,3cyclictest41-21ksoftirqd/311:50:173
28615995925,7cyclictest41-21ksoftirqd/311:00:583
28615995832,4cyclictest41-21ksoftirqd/310:35:003
28615995825,3cyclictest41-21ksoftirqd/311:27:093
28615995821,6cyclictest41-21ksoftirqd/310:05:183
28612995811,24cyclictest1317-21runrttasks12:24:510
28612995811,24cyclictest1317-21runrttasks12:24:510
134491580,4ptp4l0-21swapper/209:27:412
28615995731,6cyclictest41-21ksoftirqd/312:15:253
28615995726,3cyclictest41-21ksoftirqd/311:05:133
134491570,5ptp4l0-21swapper/307:05:043
134491570,5ptp4l0-21swapper/207:08:442
134491570,4ptp4l0-21swapper/311:25:003
2861599562,28cyclictest0-21swapper/309:17:323
2861599562,22cyclictest0-21swapper/307:42:573
28615995620,8cyclictest41-21ksoftirqd/310:25:203
2861499561,53cyclictest0-21swapper/212:00:092
134491560,3ptp4l0-21swapper/311:55:343
134491560,3ptp4l0-21swapper/207:16:332
28615995532,7cyclictest41-21ksoftirqd/311:15:153
2861599552,22cyclictest0-21swapper/309:55:393
2861599546,3cyclictest41-21ksoftirqd/311:00:003
28615995423,7cyclictest41-21ksoftirqd/307:10:193
2861599542,24cyclictest0-21swapper/309:37:303
28615995420,3cyclictest41-21ksoftirqd/312:30:273
134491540,5ptp4l2861499cyclictest07:47:532
2861599532,6cyclictest0-21swapper/308:45:163
28615995321,6cyclictest41-21ksoftirqd/309:25:253
28615995320,7cyclictest41-21ksoftirqd/308:09:433
134491530,4ptp4l0-21swapper/109:51:361
2861599527,3cyclictest15584-21unixbench_multi12:25:293
2861599522,6cyclictest0-21swapper/312:35:283
28615995224,6cyclictest41-21ksoftirqd/308:30:183
28615995221,7cyclictest41-21ksoftirqd/309:10:003
151782520,3sleep00-21swapper/011:15:290
134491520,4ptp4l0-21swapper/210:25:282
134491520,3ptp4l0-21swapper/110:01:481
2861599514,6cyclictest41-21ksoftirqd/310:45:193
2861599512,25cyclictest0-21swapper/311:38:093
2861599511,7cyclictest41-21ksoftirqd/309:00:003
134491510,3ptp4l0-21swapper/112:10:141
2861599506,3cyclictest41-21ksoftirqd/308:25:183
2861599502,7cyclictest0-21swapper/310:10:103
2861599502,7cyclictest0-21swapper/309:45:243
28615995021,7cyclictest41-21ksoftirqd/312:00:273
28615995017,3cyclictest41-21ksoftirqd/308:15:233
28614995012,36cyclictest4319-21kworker/2:112:05:282
134491500,4ptp4l0-21swapper/309:53:393
134491500,4ptp4l0-21swapper/307:51:093
134491500,4ptp4l0-21swapper/110:44:571
134491500,3ptp4l0-21swapper/107:22:331
134491500,2ptp4l0-21swapper/211:08:032
2861599496,3cyclictest41-21ksoftirqd/308:50:273
2861599493,4cyclictest41-21ksoftirqd/307:55:273
134491490,9ptp4l0-21swapper/108:32:571
134491490,4ptp4l0-21swapper/209:59:102
134491490,4ptp4l0-21swapper/112:02:241
134491490,4ptp4l0-21swapper/109:42:111
134491490,4ptp4l0-21swapper/109:26:011
134491490,3ptp4l0-21swapper/111:39:101
134491490,3ptp4l0-21swapper/108:04:501
2861599482,2cyclictest41-21ksoftirqd/310:40:273
134491480,4ptp4l0-21swapper/212:27:412
134491480,4ptp4l0-21swapper/107:55:331
134491480,3ptp4l0-21swapper/208:29:322
134491480,3ptp4l0-21swapper/112:28:571
134491480,3ptp4l0-21swapper/111:22:421
28615994734,7cyclictest41-21ksoftirqd/310:39:593
2861599473,3cyclictest41-21ksoftirqd/308:00:133
134491470,4ptp4l0-21swapper/209:49:562
134491470,3ptp4l0-21swapper/211:46:422
134491470,14ptp4l0-21swapper/209:08:552
28615994638,2cyclictest41-21ksoftirqd/307:25:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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