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2026-05-22 - 11:55
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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 Fri May 22, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27971993120,10cyclictest0-21swapper/120:15:011
27971992918,10cyclictest16254-21grep19:45:141
27971992415,9cyclictest0-21swapper/120:56:171
2796799224,2cyclictest3991-21H222:10:210
2796799220,6cyclictest0-21swapper/022:34:280
2797699215,7cyclictest0-21swapper/221:44:422
27976992016,3cyclictest3976-21H222:10:212
27971992017,2cyclictest3981-21H222:10:211
27971992017,2cyclictest21-21ksoftirqd/123:02:561
2797199201,4cyclictest6875-21python321:25:011
2797699193,15cyclictest3989-21H222:10:212
2797699193,15cyclictest28-21ksoftirqd/220:40:332
2797699193,15cyclictest0-21swapper/222:05:002
2797699193,15cyclictest0-21swapper/220:25:022
27976991917,1cyclictest0-21swapper/219:15:112
27976991915,3cyclictest4032-21accounts22:10:212
2797699190,16cyclictest3991-21H222:10:212
27971991917,1cyclictest22783-21awk21:50:191
27971991917,1cyclictest0-21swapper/119:16:211
2797199191,3cyclictest3954-21VM22:10:211
2797199190,18cyclictest5366-21sendmail-mta00:10:291
2797199190,16cyclictest4035-21H222:10:211
2797199190,16cyclictest3987-21H222:10:211
2797199190,16cyclictest0-21swapper/123:10:481
2796799193,15cyclictest3976-21H222:10:210
2796799193,15cyclictest0-21swapper/021:08:340
2796799193,10cyclictest12381-21munin-run23:30:000
2796799192,2cyclictest2226-21if_enp1s021:15:170
27967991918,1cyclictest9-21ksoftirqd/022:51:270
27967991918,1cyclictest9-21ksoftirqd/022:45:520
27967991917,1cyclictest9-21ksoftirqd/020:22:370
27967991917,1cyclictest0-21swapper/000:25:040
27967991915,3cyclictest993-21dbus-daemon22:55:220
27967991914,2cyclictest3985-21H222:10:210
2796799190,18cyclictest843-21systemd-network00:33:550
2796799190,16cyclictest4099-21H222:10:210
2796799190,16cyclictest3985-21H222:10:210
2797699182,1cyclictest12826-21nfsd400:25:182
2797699182,15cyclictest3983-21H222:10:212
27976991816,1cyclictest0-21swapper/219:53:302
27976991815,2cyclictest3991-21H222:10:212
27976991815,2cyclictest31732-21chrt21:10:162
27976991814,3cyclictest4099-21H222:10:212
27976991814,3cyclictest4035-21H222:10:212
27976991814,3cyclictest3985-21H222:10:212
27976991814,3cyclictest32431-21cat20:15:002
27976991814,3cyclictest0-21swapper/221:16:132
2797699181,2cyclictest3985-21H222:10:212
2797699180,2cyclictest4099-21H222:10:212
2797699180,2cyclictest4035-21H222:10:212
2797699180,2cyclictest4035-21H222:10:212
2797699180,2cyclictest3976-21H222:10:212
2797699180,17cyclictest4099-21H222:10:212
2797699180,17cyclictest4035-21H222:10:212
2797699180,17cyclictest3991-21H222:10:212
2797699180,17cyclictest3991-21H222:10:212
2797699180,17cyclictest3987-21H222:10:212
2797699180,17cyclictest26761-21ntpq21:00:182
2797699180,16cyclictest4099-21H222:10:212
2797699180,16cyclictest2870-21latency_hist22:15:012
2797699180,16cyclictest12680-21munin-run23:30:012
2797199182,1cyclictest0-21swapper/120:02:361
2797199182,15cyclictest97082chrt21:27:121
27971991816,1cyclictest21-21ksoftirqd/122:05:511
27971991816,1cyclictest21-21ksoftirqd/120:30:581
27971991816,1cyclictest0-21swapper/120:45:011
27971991816,1cyclictest0-21swapper/119:42:351
27971991816,1cyclictest0-21swapper/100:18:091
27971991815,2cyclictest3987-21H222:10:211
27971991815,2cyclictest3987-21H222:10:211
27971991814,3cyclictest3991-21H222:10:211
2797199181,2cyclictest3979-21H222:10:211
2797199180,2cyclictest3991-21H222:10:211
2797199180,1cyclictest0-21swapper/120:25:131
2797199180,17cyclictest4035-21H222:10:211
2797199180,17cyclictest3987-21H222:10:211
2797199180,17cyclictest21025-21cron23:45:001
2797199180,16cyclictest3979-21H222:10:211
2797199180,15cyclictest3985-21H222:10:211
2797199180,15cyclictest3976-21H222:10:211
2796799182,2cyclictest4099-21H222:10:210
2796799182,15cyclictest0-21swapper/020:55:130
2796799182,15cyclictest0-21swapper/020:43:100
2796799182,15cyclictest0-21swapper/020:35:010
27967991816,1cyclictest9-21ksoftirqd/019:37:370
27967991815,2cyclictest4035-21H222:10:210
27967991815,2cyclictest0-21swapper/022:35:140
27967991814,3cyclictest6988-21munin-run21:25:020
27967991814,3cyclictest3981-21H222:10:210
2796799181,16cyclictest23872-21latency_hist21:55:000
2796799181,16cyclictest0-21swapper/022:40:160
2796799180,2cyclictest3989-21H222:10:210
2796799180,2cyclictest3985-21H222:10:210
2796799180,2cyclictest3983-21H222:10:210
2796799180,2cyclictest3983-21H222:10:210
2796799180,2cyclictest3983-21H222:10:210
2796799180,17cyclictest843-21systemd-network00:39:040
2796799180,17cyclictest3979-21H222:10:210
2796799180,16cyclictest4099-21H222:10:210
2796799180,16cyclictest3983-21H222:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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