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2026-03-11 - 10:16
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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 Wed Mar 11, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20096996534,5cyclictest33-21ksoftirqd/200:35:182
20096996432,6cyclictest33-21ksoftirqd/223:20:272
20096996432,10cyclictest33-21ksoftirqd/220:00:242
20096996422,8cyclictest33-21ksoftirqd/221:10:242
20096996235,3cyclictest33-21ksoftirqd/220:15:262
20096996231,3cyclictest33-21ksoftirqd/219:50:252
20096996230,6cyclictest33-21ksoftirqd/219:45:002
20096996227,5cyclictest33-21ksoftirqd/223:35:012
20096996227,5cyclictest33-21ksoftirqd/223:35:012
134491620,4ptp4l0-21swapper/023:22:010
20096996132,4cyclictest33-21ksoftirqd/220:25:222
20096996131,7cyclictest33-21ksoftirqd/200:30:152
20096996131,6cyclictest33-21ksoftirqd/222:15:252
20096996129,5cyclictest33-21ksoftirqd/219:25:222
20096996128,3cyclictest33-21ksoftirqd/223:45:002
20096996032,7cyclictest33-21ksoftirqd/219:12:242
20096996031,3cyclictest33-21ksoftirqd/219:23:122
20096996029,4cyclictest33-21ksoftirqd/221:20:152
134491600,4ptp4l2009799cyclictest20:20:013
134491600,4ptp4l0-21swapper/119:22:251
134491600,4ptp4l0-21swapper/022:53:240
20096995933,6cyclictest33-21ksoftirqd/200:15:152
20096995932,6cyclictest33-21ksoftirqd/222:35:142
20096995930,3cyclictest33-21ksoftirqd/223:35:222
20096995929,4cyclictest33-21ksoftirqd/221:55:322
20096995928,5cyclictest33-21ksoftirqd/223:00:152
20096995927,5cyclictest33-21ksoftirqd/221:30:242
20096995927,4cyclictest33-21ksoftirqd/220:30:282
20096995925,6cyclictest33-21ksoftirqd/219:45:262
134491590,4ptp4l0-21swapper/021:13:360
20096995831,4cyclictest33-21ksoftirqd/223:45:202
20096995829,5cyclictest33-21ksoftirqd/221:50:212
20096995829,5cyclictest33-21ksoftirqd/219:55:222
20096995829,4cyclictest33-21ksoftirqd/223:25:172
20096995829,4cyclictest33-21ksoftirqd/222:31:242
20096995829,3cyclictest33-21ksoftirqd/221:04:532
20096995828,4cyclictest33-21ksoftirqd/222:50:172
20096995820,4cyclictest33-21ksoftirqd/200:05:262
134491580,5ptp4l2009599cyclictest00:20:261
134491580,4ptp4l0-21swapper/323:55:233
264282570,7sleep02009499cyclictest20:30:250
20096995732,5cyclictest33-21ksoftirqd/222:40:242
20096995729,3cyclictest33-21ksoftirqd/219:34:142
20096995728,3cyclictest33-21ksoftirqd/221:46:512
20096995725,6cyclictest33-21ksoftirqd/223:05:172
20096995722,4cyclictest33-21ksoftirqd/220:40:272
134491570,5ptp4l0-21swapper/119:06:181
2009699563,8cyclictest33-21ksoftirqd/200:20:192
20096995630,6cyclictest33-21ksoftirqd/223:10:292
20096995626,6cyclictest33-21ksoftirqd/222:26:252
20096995626,5cyclictest33-21ksoftirqd/220:55:132
134491560,4ptp4l0-21swapper/323:23:143
134491560,4ptp4l0-21swapper/023:51:180
134491560,3ptp4l0-21swapper/219:18:182
20096995527,3cyclictest33-21ksoftirqd/222:21:232
20096995527,3cyclictest33-21ksoftirqd/220:23:112
20096995525,8cyclictest33-21ksoftirqd/221:15:262
20096995524,7cyclictest33-21ksoftirqd/221:45:002
20096995523,4cyclictest33-21ksoftirqd/221:25:242
20096995520,4cyclictest33-21ksoftirqd/222:46:332
134491550,4ptp4l2009799cyclictest19:25:163
134491550,3ptp4l0-21swapper/020:49:050
104272550,5sleep30-21swapper/321:05:223
20096995422,5cyclictest33-21ksoftirqd/220:35:152
20096995422,5cyclictest33-21ksoftirqd/220:35:152
134491540,3ptp4l0-21swapper/321:15:133
134491540,3ptp4l0-21swapper/320:29:383
134491540,3ptp4l0-21swapper/319:22:013
134491540,11ptp4l0-21swapper/319:50:283
20096995319,4cyclictest33-21ksoftirqd/223:50:242
20096995318,6cyclictest33-21ksoftirqd/221:10:002
2009599530,4cyclictest27600-21wc21:45:001
134491530,4ptp4l0-21swapper/219:35:532
134491530,2ptp4l0-21swapper/321:57:003
134491530,2ptp4l0-21swapper/319:31:583
2009699525,2cyclictest33-21ksoftirqd/200:05:012
2009699524,3cyclictest33-21ksoftirqd/223:15:162
20096995226,3cyclictest33-21ksoftirqd/220:55:012
20096995222,5cyclictest33-21ksoftirqd/221:35:212
20096995217,5cyclictest33-21ksoftirqd/200:25:132
20096995212,5cyclictest33-21ksoftirqd/222:55:202
134491520,3ptp4l25106-21apt-get20:30:143
20096995119,3cyclictest33-21ksoftirqd/223:55:242
20096995116,4cyclictest33-21ksoftirqd/220:05:022
134491510,5ptp4l9-21ksoftirqd/022:33:150
134491510,3ptp4l0-21swapper/322:35:163
2009699505,3cyclictest33-21ksoftirqd/222:00:172
20096995017,4cyclictest33-21ksoftirqd/220:49:382
134491500,9ptp4l19330-21ls19:05:260
134491500,4ptp4l0-21swapper/322:00:423
134491500,4ptp4l0-21swapper/021:54:560
134491490,4ptp4l0-21swapper/220:10:532
134491490,3ptp4l0-21swapper/222:10:252
2009699485,2cyclictest33-21ksoftirqd/200:10:342
2009599481,4cyclictest21816-21meminfo21:30:191
134491480,3ptp4l2009799cyclictest19:46:273
134491470,3ptp4l0-21swapper/320:21:183
2009699462,3cyclictest33-21ksoftirqd/222:05:212
20095994612,33cyclictest8017-21kworker/1:123:09:081
134491460,4ptp4l0-21swapper/321:10:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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