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2026-07-09 - 07:46
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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 Thu Jul 09, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2931997335,7cyclictest33-21ksoftirqd/223:00:002
2931997237,5cyclictest33-21ksoftirqd/219:20:002
2931997236,4cyclictest33-21ksoftirqd/219:40:002
2931997236,4cyclictest33-21ksoftirqd/219:40:002
2931996936,5cyclictest33-21ksoftirqd/200:20:002
2931996930,6cyclictest33-21ksoftirqd/221:00:012
2931996733,6cyclictest33-21ksoftirqd/223:45:282
2931996732,5cyclictest33-21ksoftirqd/200:10:002
2931996532,6cyclictest33-21ksoftirqd/219:20:172
323562640,4sleep3448-21dbus-daemon20:10:253
2931996434,4cyclictest33-21ksoftirqd/223:10:142
2931996432,5cyclictest33-21ksoftirqd/223:05:152
2931996432,5cyclictest33-21ksoftirqd/221:40:002
2931996431,4cyclictest33-21ksoftirqd/221:20:142
2931996428,6cyclictest33-21ksoftirqd/222:00:262
2931996425,8cyclictest33-21ksoftirqd/200:35:272
2931996333,6cyclictest33-21ksoftirqd/221:25:142
2931996332,6cyclictest33-21ksoftirqd/200:20:152
2931996331,7cyclictest33-21ksoftirqd/220:10:002
2931996331,6cyclictest33-21ksoftirqd/223:15:192
2931996330,6cyclictest33-21ksoftirqd/222:10:232
2931996330,6cyclictest33-21ksoftirqd/219:50:122
2931996329,6cyclictest33-21ksoftirqd/221:00:142
2931996329,5cyclictest33-21ksoftirqd/223:20:162
2931996329,5cyclictest33-21ksoftirqd/223:20:162
2929996332,7cyclictest9-21ksoftirqd/000:08:060
2931996232,5cyclictest33-21ksoftirqd/220:01:122
2931996231,5cyclictest33-21ksoftirqd/222:30:272
2931996230,7cyclictest33-21ksoftirqd/223:00:242
2931996230,6cyclictest33-21ksoftirqd/220:20:272
2931996230,6cyclictest33-21ksoftirqd/220:15:242
2931996229,6cyclictest33-21ksoftirqd/200:30:242
2931996224,5cyclictest33-21ksoftirqd/223:25:252
2931996133,7cyclictest33-21ksoftirqd/220:45:012
2931996132,7cyclictest33-21ksoftirqd/223:55:182
2931996131,6cyclictest33-21ksoftirqd/222:05:252
2931996130,4cyclictest33-21ksoftirqd/222:00:012
2931996128,5cyclictest33-21ksoftirqd/219:30:292
2931996127,6cyclictest33-21ksoftirqd/200:30:002
2931996127,5cyclictest33-21ksoftirqd/221:40:162
2931996127,5cyclictest33-21ksoftirqd/200:10:202
111422610,5sleep30-21swapper/319:25:233
2931996028,5cyclictest33-21ksoftirqd/200:00:132
2931996025,5cyclictest33-21ksoftirqd/219:10:232
134491600,4ptp4l0-21swapper/019:05:190
134491600,4ptp4l0-21swapper/019:05:190
2931995929,4cyclictest33-21ksoftirqd/219:40:262
2931995929,3cyclictest33-21ksoftirqd/223:40:202
2931995928,6cyclictest33-21ksoftirqd/221:20:002
2931995928,3cyclictest33-21ksoftirqd/223:30:182
2931995927,6cyclictest33-21ksoftirqd/222:50:162
2931995923,5cyclictest33-21ksoftirqd/220:50:012
293099590,3cyclictest134491ptp4l20:20:181
2929995923,4cyclictest9-21ksoftirqd/000:30:000
2931995829,4cyclictest33-21ksoftirqd/220:13:232
2931995724,6cyclictest33-21ksoftirqd/221:50:242
2931995722,5cyclictest33-21ksoftirqd/223:35:182
293099572,2cyclictest0-21swapper/122:15:121
2929995728,3cyclictest9-21ksoftirqd/000:20:150
2929995727,4cyclictest9-21ksoftirqd/019:35:180
2929995727,4cyclictest9-21ksoftirqd/019:35:180
2931995627,6cyclictest33-21ksoftirqd/222:45:252
2929995624,5cyclictest9-21ksoftirqd/000:05:010
2929995619,5cyclictest9-21ksoftirqd/019:10:220
134491560,4ptp4l0-21swapper/123:10:141
134491560,4ptp4l0-21swapper/020:50:240
134491560,3ptp4l0-21swapper/022:10:150
2931995530,6cyclictest33-21ksoftirqd/223:51:272
2931995530,6cyclictest33-21ksoftirqd/223:51:272
2931995527,7cyclictest33-21ksoftirqd/222:35:162
2931995524,5cyclictest33-21ksoftirqd/220:30:192
2931995523,6cyclictest33-21ksoftirqd/221:05:172
2929995524,3cyclictest9-21ksoftirqd/022:25:000
2929995521,7cyclictest9-21ksoftirqd/021:30:240
2929995520,6cyclictest9-21ksoftirqd/021:25:120
2929995518,7cyclictest9-21ksoftirqd/020:15:230
2931995421,6cyclictest33-21ksoftirqd/219:45:172
2929995421,4cyclictest9-21ksoftirqd/023:00:000
2929995417,7cyclictest9-21ksoftirqd/019:35:000
134491540,4ptp4l0-21swapper/020:39:580
2931995323,5cyclictest33-21ksoftirqd/220:25:132
2931995318,6cyclictest33-21ksoftirqd/222:25:172
293099530,3cyclictest21550-21users22:05:281
2929995323,7cyclictest9-21ksoftirqd/000:10:240
2929995322,5cyclictest9-21ksoftirqd/020:10:000
2929995321,6cyclictest9-21ksoftirqd/020:55:280
134491530,4ptp4l0-21swapper/022:00:150
2929995225,3cyclictest9-21ksoftirqd/021:05:110
2929995223,8cyclictest9-21ksoftirqd/023:15:140
2929995221,7cyclictest9-21ksoftirqd/000:35:270
2929995220,4cyclictest9-21ksoftirqd/020:10:270
134491520,4ptp4l0-21swapper/121:35:461
134491520,4ptp4l0-21swapper/022:05:410
134491520,4ptp4l0-21swapper/020:47:350
2932995130,18cyclictest41-21ksoftirqd/322:00:113
293199514,3cyclictest33-21ksoftirqd/221:45:192
293099511,4cyclictest134691getstats00:35:221
293099510,3cyclictest6105-21irqstats19:15:191
2929995122,6cyclictest9-21ksoftirqd/023:00:250
2929995119,6cyclictest9-21ksoftirqd/019:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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