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2026-07-19 - 08:56
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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 rackdslot1.osadl.org (updated Sun Jul 19, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211521560,6sleep2630699cyclictest20:30:172
2365421240,7sleep0630499cyclictest20:55:180
3013321220,5sleep30-21swapper/322:20:023
120142740,5sleep125-21ksoftirqd/120:30:161
6306996939,2cyclictest33-21ksoftirqd/200:00:132
6306996632,2cyclictest33-21ksoftirqd/220:45:242
134491650,3ptp4l0-21swapper/320:30:253
6306996229,3cyclictest33-21ksoftirqd/223:00:192
6306996226,6cyclictest33-21ksoftirqd/221:30:192
134491620,6ptp4l0-21swapper/019:10:000
6306996131,7cyclictest33-21ksoftirqd/219:55:002
6306996131,7cyclictest33-21ksoftirqd/219:55:002
6306996127,5cyclictest33-21ksoftirqd/222:54:592
6306996029,3cyclictest33-21ksoftirqd/222:30:212
6306996027,6cyclictest33-21ksoftirqd/223:10:122
6306996025,5cyclictest33-21ksoftirqd/221:40:152
6306995928,7cyclictest33-21ksoftirqd/223:20:202
6306995927,6cyclictest33-21ksoftirqd/200:20:202
6306995924,5cyclictest33-21ksoftirqd/222:44:592
6306995829,4cyclictest33-21ksoftirqd/222:45:222
6306995828,7cyclictest33-21ksoftirqd/220:00:012
6306995826,5cyclictest33-21ksoftirqd/220:15:212
6306995826,4cyclictest33-21ksoftirqd/220:10:162
134491580,4ptp4l0-21swapper/319:43:533
134491580,4ptp4l0-21swapper/300:10:233
134491580,3ptp4l3850-21ssh22:30:273
6306995727,7cyclictest33-21ksoftirqd/223:50:212
6306995725,5cyclictest33-21ksoftirqd/223:30:242
6306995725,5cyclictest33-21ksoftirqd/223:30:242
6306995629,8cyclictest33-21ksoftirqd/220:35:222
6306995626,5cyclictest33-21ksoftirqd/223:45:152
6306995626,4cyclictest33-21ksoftirqd/223:59:432
6306995626,4cyclictest33-21ksoftirqd/223:15:142
6306995624,4cyclictest33-21ksoftirqd/223:25:152
6306995624,4cyclictest33-21ksoftirqd/222:35:132
6306995622,5cyclictest33-21ksoftirqd/221:25:002
134491560,4ptp4l0-21swapper/019:39:330
134491560,3ptp4l1301-21snmpd19:50:323
134491560,3ptp4l1301-21snmpd19:50:323
134491560,3ptp4l0-21swapper/322:49:183
134491560,3ptp4l0-21swapper/219:42:242
6306995528,6cyclictest33-21ksoftirqd/200:05:162
6306995526,3cyclictest33-21ksoftirqd/219:45:162
6306995526,3cyclictest33-21ksoftirqd/219:45:162
6306995525,4cyclictest33-21ksoftirqd/222:55:262
6306995525,3cyclictest33-21ksoftirqd/221:14:172
6306995523,5cyclictest33-21ksoftirqd/223:35:222
6306995523,5cyclictest33-21ksoftirqd/200:25:232
6306995523,4cyclictest33-21ksoftirqd/200:16:292
6306995522,7cyclictest33-21ksoftirqd/221:45:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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