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2025-11-18 - 12:35
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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 rackdslot0.osadl.org (updated Tue Nov 18, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
191099230,19cyclictest0-21swapper/219:11:312
190699220,4cyclictest0-21swapper/123:21:271
1901992211,6cyclictest29334-21latency_hist23:45:000
190199220,21cyclictest823-21systemd-network00:06:380
190199214,16cyclictest0-21swapper/019:41:240
190699200,17cyclictest0-21swapper/121:30:191
190199204,15cyclictest22935-21kworker/0:100:00:150
191099193,15cyclictest0-21swapper/223:44:422
1910991914,2cyclictest4526-21H212:26:332
191099190,16cyclictest4581-21H212:26:332
191099190,16cyclictest4538-21H212:26:332
191099190,16cyclictest4530-21H212:26:332
191099190,16cyclictest4526-21H212:26:332
190699192,16cyclictest32462-21ps22:50:211
1906991914,4cyclictest0-21swapper/119:30:141
190699190,2cyclictest4528-21H212:26:331
190699190,18cyclictest893-21systemd-logind22:17:081
190699190,18cyclictest0-21swapper/121:27:301
190699190,16cyclictest4593-21H212:26:331
190199193,1cyclictest0-21swapper/019:17:300
190199193,15cyclictest0-21swapper/023:50:250
190199193,15cyclictest0-21swapper/023:30:130
1901991917,1cyclictest9-21ksoftirqd/021:41:240
1901991913,5cyclictest0-21swapper/021:58:500
190199191,17cyclictest0-21swapper/021:00:010
190199191,17cyclictest0-21swapper/019:55:180
190199190,1cyclictest0-21swapper/021:14:390
190199190,16cyclictest4534-21H212:26:330
190199190,15cyclictest0-21swapper/022:54:280
191099183,1cyclictest28-21ksoftirqd/219:39:012
1910991816,1cyclictest28-21ksoftirqd/222:58:142
1910991815,2cyclictest28347-21tr22:45:182
1910991814,3cyclictest4523-21H212:26:332
191099180,2cyclictest4528-21H212:26:332
191099180,17cyclictest4536-21H212:26:332
191099180,17cyclictest0-21swapper/223:54:452
191099180,17cyclictest0-21swapper/220:20:592
191099180,16cyclictest4538-21H212:26:332
191099180,16cyclictest4530-21H212:26:332
190699182,15cyclictest4538-21H212:26:331
1906991816,1cyclictest17834-21expr00:20:161
1906991815,1cyclictest0-21swapper/122:02:551
1906991814,2cyclictest9621-21pzem22:10:211
190699180,2cyclictest4523-21H212:26:331
190699180,17cyclictest4532-21H212:26:331
190699180,17cyclictest4523-21H212:26:331
190699180,17cyclictest414-20systemd-journal23:02:251
190699180,16cyclictest4593-21H212:26:331
190699180,16cyclictest4533-21H212:26:331
190199182,15cyclictest0-21swapper/021:04:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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