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2026-07-14 - 20:44
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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 Jul 14, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491800,11ptp4l2129-21iostat07:05:161
3950996932,6cyclictest41-21ksoftirqd/309:51:433
3950996640,3cyclictest41-21ksoftirqd/309:05:283
3950996630,8cyclictest41-21ksoftirqd/308:09:593
134491650,5ptp4l4148-21apt-get08:20:101
3950996232,6cyclictest41-21ksoftirqd/310:10:003
3950996231,4cyclictest41-21ksoftirqd/310:25:193
3950996230,3cyclictest41-21ksoftirqd/309:13:083
3950996230,3cyclictest41-21ksoftirqd/308:40:013
3950996228,4cyclictest41-21ksoftirqd/310:55:013
3950996222,8cyclictest41-21ksoftirqd/309:20:003
3950996218,3cyclictest41-21ksoftirqd/310:45:183
134491620,4ptp4l0-21swapper/210:35:192
134491620,4ptp4l0-21swapper/210:35:192
134491620,3ptp4l13189-21apt-get07:30:121
3950996128,4cyclictest41-21ksoftirqd/311:22:093
3950996029,7cyclictest41-21ksoftirqd/309:30:233
3950996029,7cyclictest41-21ksoftirqd/309:30:233
3950996028,8cyclictest41-21ksoftirqd/310:10:123
3950996028,8cyclictest41-21ksoftirqd/307:20:233
3950996028,8cyclictest41-21ksoftirqd/307:20:233
3950996028,7cyclictest41-21ksoftirqd/312:10:153
3950996027,6cyclictest41-21ksoftirqd/312:05:173
3950996027,6cyclictest41-21ksoftirqd/312:05:173
3950996027,3cyclictest41-21ksoftirqd/310:35:003
3950996026,6cyclictest41-21ksoftirqd/310:55:173
3950996026,4cyclictest41-21ksoftirqd/308:04:373
134491600,4ptp4l0-21swapper/208:09:582
3950995929,7cyclictest41-21ksoftirqd/308:56:383
3950995929,7cyclictest41-21ksoftirqd/308:56:383
3950995929,3cyclictest41-21ksoftirqd/311:09:163
3950995928,8cyclictest41-21ksoftirqd/312:35:243
3950995928,8cyclictest41-21ksoftirqd/312:15:153
3950995927,3cyclictest41-21ksoftirqd/308:25:523
3950995927,3cyclictest41-21ksoftirqd/308:25:523
3950995922,8cyclictest41-21ksoftirqd/310:40:263
3950995922,8cyclictest41-21ksoftirqd/307:50:013
134491590,4ptp4l0-21swapper/112:08:191
134491590,4ptp4l0-21swapper/112:08:191
134491590,4ptp4l0-21swapper/109:57:491
134491590,3ptp4l0-21swapper/210:51:432
3950995829,7cyclictest41-21ksoftirqd/309:21:113
3950995828,8cyclictest41-21ksoftirqd/309:45:143
3950995828,4cyclictest41-21ksoftirqd/307:34:573
3950995828,3cyclictest41-21ksoftirqd/312:20:233
3950995826,7cyclictest41-21ksoftirqd/310:15:153
3950995825,3cyclictest41-21ksoftirqd/308:32:423
3950995824,8cyclictest41-21ksoftirqd/310:35:263
3950995824,8cyclictest41-21ksoftirqd/310:35:263
3950995822,7cyclictest41-21ksoftirqd/309:45:003
3950995820,8cyclictest41-21ksoftirqd/309:57:133
134491580,4ptp4l0-21swapper/108:40:231
134491580,3ptp4l0-21swapper/211:14:152
3950995737,2cyclictest41-21ksoftirqd/307:40:253
3950995729,7cyclictest41-21ksoftirqd/308:18:253
3950995718,7cyclictest41-21ksoftirqd/310:24:593
134491570,4ptp4l0-21swapper/107:10:321
3950995626,8cyclictest41-21ksoftirqd/309:35:183
3950995626,3cyclictest41-21ksoftirqd/311:46:493
3950995624,6cyclictest41-21ksoftirqd/308:25:003
3950995621,3cyclictest41-21ksoftirqd/307:55:013
3950995621,3cyclictest41-21ksoftirqd/307:55:003
3950995529,3cyclictest41-21ksoftirqd/311:15:143
3950995528,7cyclictest41-21ksoftirqd/309:00:263
134491550,4ptp4l0-21swapper/110:08:241
134491550,2ptp4l0-21swapper/007:15:140
134491550,2ptp4l0-21swapper/007:15:140
3950995426,9cyclictest41-21ksoftirqd/307:12:423
3950995417,8cyclictest41-21ksoftirqd/311:27:593
3950995324,8cyclictest41-21ksoftirqd/312:05:003
3950995324,6cyclictest41-21ksoftirqd/311:35:293
3950995322,10cyclictest41-21ksoftirqd/311:00:293
3950995318,9cyclictest41-21ksoftirqd/308:10:183
3950995318,8cyclictest41-21ksoftirqd/310:00:133
3950995316,8cyclictest41-21ksoftirqd/307:57:053
3950995313,8cyclictest41-21ksoftirqd/311:58:203
134491530,3ptp4l0-21swapper/112:35:551
3950995218,6cyclictest41-21ksoftirqd/311:50:143
134491520,4ptp4l0-21swapper/207:53:492
134491520,4ptp4l0-21swapper/207:53:492
134491520,3ptp4l0-21swapper/009:25:160
134491520,14ptp4l0-21swapper/008:42:100
3950995131,5cyclictest41-21ksoftirqd/307:39:503
3950995121,6cyclictest41-21ksoftirqd/309:25:153
134491510,4ptp4l0-21swapper/010:40:050
134491510,4ptp4l0-21swapper/010:35:000
134491510,4ptp4l0-21swapper/007:46:550
3950995037,10cyclictest41-21ksoftirqd/308:45:003
3950995020,4cyclictest41-21ksoftirqd/311:44:253
3950995017,3cyclictest41-21ksoftirqd/308:55:013
134491500,4ptp4l0-21swapper/212:28:242
134491500,4ptp4l0-21swapper/111:27:381
134491500,4ptp4l0-21swapper/109:06:181
134491500,3ptp4l0-21swapper/009:06:140
134491500,3ptp4l0-21swapper/007:55:140
134491500,11ptp4l0-21swapper/011:58:090
3950994917,7cyclictest41-21ksoftirqd/312:30:263
3947994931,5cyclictest9-21ksoftirqd/011:45:000
134491490,4ptp4l0-21swapper/011:05:050
134491490,3ptp4l0-21swapper/211:45:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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