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2025-12-02 - 08:00
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot6.osadl.org (updated Tue Dec 02, 2025 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124682820,7sleep0151rcu_preempt22:55:260
2731027925,44sleep10-21swapper/119:06:061
27874997652,18cyclictest26-21ksoftirqd/123:45:251
27869997643,18cyclictest14-21ksoftirqd/019:45:220
27874997531,37cyclictest26-21ksoftirqd/122:20:231
27869997528,32cyclictest14-21ksoftirqd/023:54:590
2755227517,48sleep00-21swapper/019:08:400
2786999748,23cyclictest15794-21apt-get00:35:140
27869997236,31cyclictest14-21ksoftirqd/020:51:350
27874997136,24cyclictest26-21ksoftirqd/121:10:141
27869997135,9cyclictest14-21ksoftirqd/000:20:160
27869997113,50cyclictest0-21swapper/021:35:140
27869997110,20cyclictest302042sleep019:15:130
27869997017,47cyclictest254-21systemd-journal23:47:400
27869996931,23cyclictest14-21ksoftirqd/021:45:260
27869996913,50cyclictest0-21swapper/019:10:130
27869996831,22cyclictest14-21ksoftirqd/019:35:130
27874996650,10cyclictest26-21ksoftirqd/119:40:051
27874996635,18cyclictest26-21ksoftirqd/120:40:031
27874996635,18cyclictest26-21ksoftirqd/120:40:021
27874996612,49cyclictest0-21swapper/121:37:171
2786999667,18cyclictest1144-21apt-get23:55:150
2786999667,18cyclictest1144-21apt-get23:55:150
27869996631,9cyclictest14-21ksoftirqd/000:30:260
27869996630,21cyclictest14-21ksoftirqd/020:05:340
27869996630,21cyclictest14-21ksoftirqd/020:05:340
27874996535,18cyclictest26-21ksoftirqd/122:30:281
27874996535,17cyclictest26-21ksoftirqd/121:40:291
27874996440,18cyclictest26-21ksoftirqd/120:00:231
27874996440,18cyclictest26-21ksoftirqd/119:30:001
27874996439,19cyclictest26-21ksoftirqd/123:25:351
27874996438,19cyclictest26-21ksoftirqd/123:55:011
27874996435,17cyclictest26-21ksoftirqd/123:35:281
27874996434,18cyclictest26-21ksoftirqd/100:30:361
27869996440,8cyclictest14-21ksoftirqd/020:30:130
27869996439,14cyclictest0-21swapper/019:40:230
27869996439,10cyclictest14-21ksoftirqd/022:30:300
27869996425,23cyclictest14-21ksoftirqd/022:05:290
27874996348,10cyclictest26-21ksoftirqd/120:55:331
27874996348,10cyclictest26-21ksoftirqd/100:25:261
27874996347,11cyclictest26-21ksoftirqd/119:45:341
27874996347,10cyclictest26-21ksoftirqd/123:15:301
27874996347,10cyclictest26-21ksoftirqd/123:00:261
27874996347,10cyclictest26-21ksoftirqd/122:10:201
27874996347,10cyclictest26-21ksoftirqd/122:10:001
27874996347,10cyclictest26-21ksoftirqd/119:20:371
27874996347,10cyclictest26-21ksoftirqd/119:10:301
27874996347,10cyclictest26-21ksoftirqd/100:05:341
27874996347,10cyclictest26-21ksoftirqd/100:00:211
27874996346,9cyclictest26-21ksoftirqd/123:30:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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