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2026-06-01 - 01:10
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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 Sun May 31, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300921430,2sleep01993099cyclictest08:50:180
1779521430,7sleep21993299cyclictest11:40:182
134491650,6ptp4l0-21swapper/007:50:280
134491650,6ptp4l0-21swapper/007:50:280
134491640,3ptp4l0-21swapper/007:45:290
134491610,3ptp4l9403-21apt-get09:05:120
162602600,5sleep016264-21latency_hist10:30:000
134491600,3ptp4l0-21swapper/208:30:252
134491590,4ptp4l0-21swapper/209:15:232
134491590,4ptp4l0-21swapper/209:15:222
134491590,4ptp4l0-21swapper/007:15:210
134491590,3ptp4l3225-21ls07:40:271
134491590,3ptp4l27991-21ntp_states07:25:231
134491580,5ptp4l0-21swapper/107:55:281
134491580,3ptp4l5901-21ls10:05:210
134491570,4ptp4l0-21swapper/311:25:053
134491570,3ptp4l0-21swapper/108:10:131
134491570,3ptp4l0-21swapper/012:20:280
134491570,3ptp4l0-21swapper/007:20:250
134491560,3ptp4l0-21swapper/308:55:093
134491560,3ptp4l0-21swapper/209:43:412
134491560,17ptp4l0-21swapper/208:45:392
19933995523,4cyclictest41-21ksoftirqd/312:30:003
19933995523,4cyclictest41-21ksoftirqd/311:55:023
19933995523,4cyclictest41-21ksoftirqd/308:39:503
19933995522,8cyclictest41-21ksoftirqd/309:02:163
19933995522,4cyclictest41-21ksoftirqd/310:15:193
19933995423,4cyclictest41-21ksoftirqd/311:19:173
19933995421,4cyclictest41-21ksoftirqd/309:31:253
19933995420,7cyclictest41-21ksoftirqd/307:41:283
19933995419,4cyclictest41-21ksoftirqd/309:52:023
19933995419,4cyclictest41-21ksoftirqd/309:52:023
19930995424,4cyclictest9-21ksoftirqd/010:35:010
134491540,3ptp4l0-21swapper/111:20:061
19933995323,4cyclictest41-21ksoftirqd/312:10:353
19933995322,8cyclictest41-21ksoftirqd/309:35:233
19933995322,4cyclictest41-21ksoftirqd/311:40:173
19933995321,5cyclictest41-21ksoftirqd/308:08:133
19933995321,3cyclictest41-21ksoftirqd/311:23:103
19933995318,5cyclictest41-21ksoftirqd/309:23:493
134491530,4ptp4l0-21swapper/211:38:312
134491530,3ptp4l0-21swapper/110:18:571
134491530,10ptp4l0-21swapper/211:55:252
19933995221,7cyclictest41-21ksoftirqd/308:10:233
19933995218,4cyclictest41-21ksoftirqd/308:21:083
134491520,5ptp4l0-21swapper/007:05:120
134491520,3ptp4l0-21swapper/207:10:142
134491520,3ptp4l0-21swapper/008:24:430
134491520,11ptp4l0-21swapper/107:05:141
19933995120,3cyclictest41-21ksoftirqd/310:44:043
134491510,4ptp4l0-21swapper/210:42:482
134491510,4ptp4l0-21swapper/109:59:551
134491510,3ptp4l0-21swapper/209:50:372
134491510,3ptp4l0-21swapper/209:50:372
134491510,3ptp4l0-21swapper/110:53:441
134491510,3ptp4l0-21swapper/011:10:120
134491510,3ptp4l0-21swapper/010:45:460
134491510,3ptp4l0-21swapper/010:00:150
1993399509,4cyclictest41-21ksoftirqd/312:05:003
19933995022,7cyclictest41-21ksoftirqd/310:10:003
19933995020,3cyclictest41-21ksoftirqd/311:49:083
19933995019,4cyclictest41-21ksoftirqd/308:48:573
19933995015,7cyclictest41-21ksoftirqd/308:30:273
19933995014,7cyclictest41-21ksoftirqd/307:20:133
134491500,9ptp4l0-21swapper/107:20:261
134491500,4ptp4l0-21swapper/307:53:073
134491500,4ptp4l0-21swapper/307:53:073
134491500,4ptp4l0-21swapper/107:46:081
134491500,3ptp4l0-21swapper/208:03:172
19933994920,9cyclictest41-21ksoftirqd/310:33:223
19933994918,7cyclictest41-21ksoftirqd/309:45:273
19933994918,4cyclictest41-21ksoftirqd/311:05:533
19933994917,6cyclictest41-21ksoftirqd/311:10:173
134491490,6ptp4l33-21ksoftirqd/212:23:192
134491490,4ptp4l0-21swapper/207:15:192
134491490,4ptp4l0-21swapper/112:33:501
134491490,4ptp4l0-21swapper/111:31:441
134491490,4ptp4l0-21swapper/110:56:321
134491490,4ptp4l0-21swapper/007:32:060
134491490,3ptp4l0-21swapper/309:10:313
134491490,3ptp4l0-21swapper/209:02:222
134491490,3ptp4l0-21swapper/112:18:501
19933994822,3cyclictest41-21ksoftirqd/307:17:123
19933994819,8cyclictest41-21ksoftirqd/309:40:123
19933994818,3cyclictest41-21ksoftirqd/310:58:433
134491480,4ptp4l0-21swapper/109:33:521
134491480,4ptp4l0-21swapper/011:44:530
134491480,4ptp4l0-21swapper/008:59:300
134491480,3ptp4l0-21swapper/212:00:352
134491480,3ptp4l0-21swapper/108:27:421
134491480,3ptp4l0-21swapper/108:27:421
19933994718,7cyclictest41-21ksoftirqd/311:50:133
19933994717,7cyclictest41-21ksoftirqd/311:30:193
19933994716,3cyclictest41-21ksoftirqd/312:10:003
134491470,4ptp4l0-21swapper/309:16:083
134491470,4ptp4l0-21swapper/309:16:083
134491470,4ptp4l0-21swapper/111:29:551
134491470,4ptp4l0-21swapper/111:17:001
134491470,4ptp4l0-21swapper/111:00:371
134491470,4ptp4l0-21swapper/109:27:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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