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2026-07-04 - 07:54
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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 50 highest latencies:
System rackdslot4.osadl.org (updated Sat Jul 04, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11342204170,22sleep30-21swapper/319:08:223
9322202170,22sleep20-21swapper/219:06:282
11122201167,23sleep10-21swapper/119:08:041
11932200166,22sleep00-21swapper/019:09:070
1169721240,4sleep3157899cyclictest19:30:043
138491770,1ptp4l391rcuc/322:20:223
1577996631,9cyclictest33-21ksoftirqd/222:55:002
1577996430,4cyclictest33-21ksoftirqd/219:45:012
1577996429,8cyclictest33-21ksoftirqd/200:05:232
1577996331,4cyclictest33-21ksoftirqd/220:00:232
1577996330,4cyclictest33-21ksoftirqd/220:25:242
1577996329,7cyclictest33-21ksoftirqd/200:25:142
1577996328,4cyclictest33-21ksoftirqd/221:40:222
1577996326,4cyclictest33-21ksoftirqd/222:15:232
157599638,18cyclictest0-21swapper/021:46:030
1577996232,4cyclictest33-21ksoftirqd/221:50:172
1577996230,4cyclictest33-21ksoftirqd/220:45:222
1577996227,7cyclictest33-21ksoftirqd/200:20:202
1577996226,5cyclictest33-21ksoftirqd/222:10:012
157599628,16cyclictest24946-21cstates22:05:120
157599628,16cyclictest24946-21cstates22:05:120
157599625,16cyclictest0-21swapper/000:20:200
1577996127,4cyclictest33-21ksoftirqd/223:00:002
1577996126,11cyclictest33-21ksoftirqd/222:05:002
1577996029,4cyclictest33-21ksoftirqd/222:30:122
1577996029,4cyclictest33-21ksoftirqd/221:05:152
1577996028,10cyclictest33-21ksoftirqd/219:10:242
1577996027,6cyclictest33-21ksoftirqd/223:20:132
1577996027,4cyclictest33-21ksoftirqd/223:50:012
1577996027,4cyclictest33-21ksoftirqd/222:25:132
1577996027,4cyclictest33-21ksoftirqd/220:40:132
1577996026,4cyclictest33-21ksoftirqd/223:10:122
1577996020,10cyclictest33-21ksoftirqd/222:10:142
286772590,4sleep1157699cyclictest22:10:241
1577995929,4cyclictest33-21ksoftirqd/219:35:202
1577995928,9cyclictest33-21ksoftirqd/222:10:012
1577995928,6cyclictest33-21ksoftirqd/223:35:182
1577995928,3cyclictest33-21ksoftirqd/223:55:112
1577995926,4cyclictest33-21ksoftirqd/220:30:122
1577995925,8cyclictest33-21ksoftirqd/220:20:182
1577995921,7cyclictest33-21ksoftirqd/200:15:272
157599599,11cyclictest14136-21grep22:45:250
1577995826,9cyclictest33-21ksoftirqd/223:30:122
1577995826,5cyclictest33-21ksoftirqd/223:25:172
1577995826,4cyclictest33-21ksoftirqd/223:05:132
1577995822,6cyclictest33-21ksoftirqd/219:50:162
1577995822,5cyclictest33-21ksoftirqd/219:20:142
1577995822,4cyclictest33-21ksoftirqd/219:30:122
1577995731,10cyclictest33-21ksoftirqd/221:55:222
1577995729,9cyclictest33-21ksoftirqd/220:50:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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