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2026-04-14 - 12:50
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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 rackdslot4.osadl.org (updated Tue Apr 14, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18202204166,27sleep00-21swapper/019:07:100
138591204170,22phc2sys0-21swapper/319:09:553
17252202168,22sleep10-21swapper/119:06:021
17462201167,23sleep20-21swapper/219:06:192
2389996527,10cyclictest41-21ksoftirqd/323:55:173
2389996325,8cyclictest41-21ksoftirqd/320:36:043
238699632,21cyclictest9512-21apt-get23:45:140
2389996231,8cyclictest41-21ksoftirqd/322:20:183
2389996224,4cyclictest41-21ksoftirqd/323:25:283
2388996231,3cyclictest33-21ksoftirqd/223:40:152
2388996130,4cyclictest33-21ksoftirqd/219:45:252
54692600,3sleep35474-21latency22:30:203
2389996024,8cyclictest41-21ksoftirqd/321:03:363
2389996021,8cyclictest41-21ksoftirqd/320:55:223
2388996031,8cyclictest33-21ksoftirqd/220:25:172
2388996031,3cyclictest33-21ksoftirqd/220:00:142
2389995931,4cyclictest41-21ksoftirqd/319:40:143
2389995927,7cyclictest41-21ksoftirqd/300:25:183
2389995921,4cyclictest41-21ksoftirqd/319:14:243
2388995930,8cyclictest33-21ksoftirqd/220:40:132
2388995930,4cyclictest33-21ksoftirqd/221:40:252
2388995930,4cyclictest33-21ksoftirqd/200:10:132
2388995929,5cyclictest33-21ksoftirqd/223:55:162
2389995828,3cyclictest41-21ksoftirqd/321:55:133
2388995830,4cyclictest33-21ksoftirqd/220:05:162
2389995730,9cyclictest41-21ksoftirqd/300:05:183
2388995728,3cyclictest33-21ksoftirqd/222:15:182
2388995727,4cyclictest33-21ksoftirqd/222:05:122
2388995727,4cyclictest33-21ksoftirqd/221:50:132
2388995727,4cyclictest33-21ksoftirqd/200:30:182
2388995716,5cyclictest33-21ksoftirqd/220:55:252
2389995629,3cyclictest41-21ksoftirqd/322:50:153
2389995620,4cyclictest41-21ksoftirqd/319:21:153
2388995629,3cyclictest33-21ksoftirqd/222:00:192
2388995629,3cyclictest33-21ksoftirqd/221:25:142
2388995628,3cyclictest33-21ksoftirqd/222:45:142
2388995627,4cyclictest33-21ksoftirqd/222:35:172
2388995626,3cyclictest33-21ksoftirqd/223:55:012
2386995613,18cyclictest19557-21/usr/sbin/munin20:50:150
2389995529,4cyclictest41-21ksoftirqd/323:15:193
2389995524,10cyclictest41-21ksoftirqd/320:20:153
238899554,10cyclictest33-21ksoftirqd/220:40:002
2388995526,4cyclictest33-21ksoftirqd/221:05:172
2388995525,4cyclictest33-21ksoftirqd/223:15:142
2388995525,4cyclictest33-21ksoftirqd/219:55:192
2389995428,4cyclictest41-21ksoftirqd/323:35:173
2389995419,3cyclictest41-21ksoftirqd/300:04:543
2389995419,10cyclictest41-21ksoftirqd/322:49:153
2388995422,7cyclictest33-21ksoftirqd/220:50:132
238699546,25cyclictest16604-21seq20:44:260
2389995321,9cyclictest41-21ksoftirqd/323:43:513
2389995321,3cyclictest41-21ksoftirqd/319:15:273
2389995320,9cyclictest41-21ksoftirqd/320:08:493
2389995320,10cyclictest41-21ksoftirqd/300:14:203
2389995319,10cyclictest41-21ksoftirqd/322:27:103
2388995320,8cyclictest33-21ksoftirqd/221:15:262
68332520,3sleep00-21swapper/023:40:000
238999525,8cyclictest41-21ksoftirqd/319:55:173
238999523,9cyclictest41-21ksoftirqd/320:45:153
238999523,9cyclictest41-21ksoftirqd/320:45:153
2389995219,4cyclictest41-21ksoftirqd/320:29:143
2388995213,4cyclictest33-21ksoftirqd/222:10:252
238899511,8cyclictest33-21ksoftirqd/220:15:142
238899510,7cyclictest33-21ksoftirqd/220:50:002
238899510,7cyclictest33-21ksoftirqd/220:50:002
238999505,8cyclictest41-21ksoftirqd/321:40:143
238999505,8cyclictest41-21ksoftirqd/320:10:133
2389995029,11cyclictest41-21ksoftirqd/322:05:183
2389995019,10cyclictest41-21ksoftirqd/321:23:313
2388995026,4cyclictest33-21ksoftirqd/220:30:152
238699501,4cyclictest223-21systemd-journal23:14:570
238699501,4cyclictest223-21systemd-journal23:14:570
238999493,8cyclictest41-21ksoftirqd/323:20:133
238999492,6cyclictest41-21ksoftirqd/320:50:023
238999491,9cyclictest41-21ksoftirqd/323:00:243
2389994919,10cyclictest41-21ksoftirqd/320:03:403
2388994932,6cyclictest33-21ksoftirqd/223:20:232
2389994844,3cyclictest391rcuc/319:54:593
2389994829,10cyclictest41-21ksoftirqd/321:30:243
2389994829,10cyclictest41-21ksoftirqd/321:10:133
238899485,3cyclictest33-21ksoftirqd/223:25:132
238899483,8cyclictest33-21ksoftirqd/221:15:002
2388994832,9cyclictest33-21ksoftirqd/200:20:242
2388994832,8cyclictest33-21ksoftirqd/223:45:242
2388994832,6cyclictest33-21ksoftirqd/219:15:182
2388994829,9cyclictest33-21ksoftirqd/200:15:182
2388994818,4cyclictest33-21ksoftirqd/219:25:242
2388994817,8cyclictest33-21ksoftirqd/222:30:242
238899481,10cyclictest33-21ksoftirqd/222:50:142
238999473,9cyclictest41-21ksoftirqd/319:25:263
238999472,9cyclictest41-21ksoftirqd/321:15:153
2389994726,11cyclictest41-21ksoftirqd/322:00:183
238899473,3cyclictest121rcu_preempt19:30:142
2388994732,4cyclictest33-21ksoftirqd/200:00:372
2388994722,13cyclictest33-21ksoftirqd/221:20:232
238899471,6cyclictest33-21ksoftirqd/219:15:012
2387994717,29cyclictest0-21swapper/100:06:241
238999467,7cyclictest41-21ksoftirqd/321:39:593
238999462,8cyclictest41-21ksoftirqd/322:45:003
2389994618,9cyclictest41-21ksoftirqd/323:08:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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