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2026-05-15 - 09:53
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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 rackcslot4.osadl.org (updated Fri May 15, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23043732270186,29sleep00-21swapper/019:05:220
23059682239198,27sleep10-21swapper/119:08:451
23850672600,9sleep126-21ksoftirqd/121:47:551
179699530,4rtkit-daemon1795-21rtkit-daemon23:40:081
179699530,4rtkit-daemon1795-21rtkit-daemon21:33:460
179699510,3rtkit-daemon1795-21rtkit-daemon21:42:500
179699510,3rtkit-daemon1795-21rtkit-daemon21:14:050
179699490,4rtkit-daemon1795-21rtkit-daemon22:04:591
179699470,4rtkit-daemon1795-21rtkit-daemon19:26:511
23392282460,6sleep02339230-21gpgv20:30:020
23210302460,5sleep02320860-21python319:45:010
25045752450,4sleep10-21swapper/100:29:131
179699410,5rtkit-daemon2422156-21seq22:38:100
230622099397,6cyclictest13-21ksoftirqd/022:50:000
179699390,3rtkit-daemon1795-21rtkit-daemon21:17:291
179699390,3rtkit-daemon0-21swapper/021:45:440
230622099387,6cyclictest13-21ksoftirqd/022:05:010
179699380,5rtkit-daemon2329033-21chrt20:04:561
179699380,3rtkit-daemon0-21swapper/119:35:191
230622099374,5cyclictest13-21ksoftirqd/021:25:010
2306220993724,3cyclictest13-21ksoftirqd/000:11:060
230622099371,5cyclictest13-21ksoftirqd/000:40:010
230622099371,4cyclictest13-21ksoftirqd/019:50:010
179699370,3rtkit-daemon0-21swapper/000:32:230
2306220993621,3cyclictest13-21ksoftirqd/000:23:090
179699360,4rtkit-daemon1795-21rtkit-daemon23:00:330
179699360,3rtkit-daemon1795-21rtkit-daemon22:50:120
179699360,3rtkit-daemon0-21swapper/023:26:080
179699360,3rtkit-daemon0-21swapper/020:19:080
230622099352,4cyclictest13-21ksoftirqd/022:15:010
230622099351,4cyclictest13-21ksoftirqd/000:00:000
230622099350,9cyclictest2318084-21sendmail_mailtr19:35:220
179699350,6rtkit-daemon13-21ksoftirqd/021:35:331
179699350,5rtkit-daemon2391138-21grep21:55:251
179699350,4rtkit-daemon1795-21rtkit-daemon22:09:490
179699350,3rtkit-daemon0-21swapper/121:53:021
179699350,3rtkit-daemon0-21swapper/121:53:011
179699350,3rtkit-daemon0-21swapper/023:46:521
179699350,3rtkit-daemon0-21swapper/023:23:410
179699350,12rtkit-daemon13-21ksoftirqd/022:57:431
230622099341,9cyclictest1-21systemd20:50:230
230622099340,8cyclictest2483893-21apt-get00:00:110
179699340,4rtkit-daemon2419615-21apt-get22:35:131
179699340,3rtkit-daemon1795-21rtkit-daemon21:35:540
179699340,3rtkit-daemon0-21swapper/121:03:540
179699340,3rtkit-daemon0-21swapper/100:08:020
179699330,3rtkit-daemon1795-21rtkit-daemon21:09:570
179699330,3rtkit-daemon1795-21rtkit-daemon20:00:440
179699330,3rtkit-daemon0-21swapper/123:43:460
179699330,3rtkit-daemon0-21swapper/022:53:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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