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2025-11-27 - 04:47
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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 rackdslot0.osadl.org (updated Thu Nov 27, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
571499253,4cyclictest0-21swapper/020:00:010
571699230,5cyclictest0-21swapper/221:39:522
571699230,5cyclictest0-21swapper/221:39:522
5716992119,1cyclictest28-21ksoftirqd/219:27:412
571699210,18cyclictest13405-21perf00:15:002
5715992118,2cyclictest12902-21if_enp1s023:15:141
5715992113,4cyclictest0-21swapper/123:53:181
571699204,1cyclictest28-21ksoftirqd/221:19:432
571699204,15cyclictest28-21ksoftirqd/200:23:202
5716992012,4cyclictest0-21swapper/219:50:272
571599204,1cyclictest0-21swapper/120:35:021
571599204,15cyclictest4532-21H212:26:331
571599203,16cyclictest24156-21date22:40:011
571599203,11cyclictest16669-21sed19:30:011
5715992018,1cyclictest0-21swapper/122:58:241
5715992017,2cyclictest11461-21grep21:20:141
571599200,18cyclictest0-21swapper/100:20:331
571499202,1cyclictest111rcu_preempt00:23:290
571699194,4cyclictest0-21swapper/220:06:572
571699194,1cyclictest0-21swapper/220:27:582
5716991917,1cyclictest28-21ksoftirqd/219:42:432
5716991914,2cyclictest4532-21H212:26:332
571699190,18cyclictest823-21systemd-network23:13:042
571699190,16cyclictest4593-21H212:26:332
571699190,16cyclictest4538-21H212:26:332
571699190,16cyclictest4530-21H212:26:332
571699190,16cyclictest4530-21H212:26:332
571599191,17cyclictest4532-21H212:26:331
571599190,2cyclictest4536-21H212:26:331
571599190,2cyclictest4532-21H212:26:331
571599190,2cyclictest4523-21H212:26:331
571599190,17cyclictest4530-21H212:26:331
571599190,16cyclictest4593-21H212:26:331
571599190,16cyclictest4530-21H212:26:331
571599190,16cyclictest4528-21H212:26:331
571599190,15cyclictest0-21swapper/100:25:211
571499191,17cyclictest4581-21H212:26:330
571499190,2cyclictest4523-21H212:26:330
571499190,2cyclictest14890-21irqstats21:25:160
571499190,1cyclictest0-21swapper/023:35:150
571499190,18cyclictest0-21swapper/020:39:430
571499190,17cyclictest4581-21H212:26:330
571499190,16cyclictest4593-21H212:26:330
571499190,16cyclictest4593-21H212:26:330
5716991814,3cyclictest4776-21lxd20:44:582
5716991814,3cyclictest4581-21H212:26:332
5716991813,2cyclictest4532-21H212:26:332
571699181,16cyclictest3727-21smartctl21:05:172
571699180,2cyclictest4536-21H212:26:332
571699180,2cyclictest4526-21H212:26:332
571699180,2cyclictest4523-21H212:26:332
571699180,17cyclictest4593-21H212:26:332
571699180,17cyclictest4593-21H212:26:332
571699180,17cyclictest4581-21H212:26:332
571699180,17cyclictest4534-21H212:26:332
571699180,17cyclictest4528-21H212:26:332
571699180,16cyclictest4593-21H212:26:332
571699180,16cyclictest4538-21H212:26:332
571699180,16cyclictest4536-21H212:26:332
571699180,16cyclictest4523-21H212:26:332
571699180,16cyclictest4523-21H212:26:332
571599183,1cyclictest0-21swapper/122:27:241
571599182,15cyclictest21-21ksoftirqd/123:38:271
5715991815,2cyclictest11989-21grep20:15:191
5715991815,2cyclictest11332-21nfsd422:15:171
5715991813,4cyclictest0-21swapper/119:52:181
5715991813,3cyclictest4526-21H212:26:331
571599181,16cyclictest4534-21H212:26:331
571599180,2cyclictest4528-21H212:26:331
571599180,2cyclictest4528-21H212:26:331
571599180,2cyclictest4523-21H212:26:331
571599180,1cyclictest0-21swapper/121:00:221
571599180,17cyclictest4528-21H212:26:331
571599180,16cyclictest4538-21H212:26:331
571599180,16cyclictest4538-21H212:26:331
571599180,16cyclictest4526-21H212:26:331
571599180,16cyclictest4523-21H212:26:331
571599180,15cyclictest4593-21H212:26:331
571599180,15cyclictest4581-21H212:26:331
571599180,15cyclictest4581-21H212:26:331
571599180,15cyclictest4581-21H212:26:331
571599180,15cyclictest4534-21H212:26:331
571499183,1cyclictest0-21swapper/021:21:080
571499182,15cyclictest0-21swapper/022:55:190
571499182,15cyclictest0-21swapper/022:48:060
5714991816,1cyclictest26365-21tr19:45:130
5714991815,2cyclictest4525-21H212:26:330
5714991814,3cyclictest4536-21H212:26:330
5714991813,2cyclictest4523-21H212:26:330
571499181,16cyclictest32542-21http_loadtime23:50:180
571499180,3cyclictest414-20systemd-journal23:34:560
571499180,2cyclictest4593-21H212:26:330
571499180,2cyclictest4581-21H212:26:330
571499180,2cyclictest4536-21H212:26:330
571499180,2cyclictest4534-21H212:26:330
571499180,2cyclictest4526-21H212:26:330
571499180,1cyclictest4581-21H212:26:330
571499180,1cyclictest4581-21H212:26:330
571499180,16cyclictest4538-21H212:26:330
571499180,16cyclictest4538-21H212:26:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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