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2025-12-19 - 18:35
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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 Fri Dec 19, 2025 12:46:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28869992515,0cyclictest0-21swapper/109:12:331
2887099240,23cyclictest21080-21cron08:50:012
28870992313,5cyclictest0-21swapper/211:35:132
2886999215,14cyclictest0-21swapper/108:30:351
2886999210,3cyclictest0-21swapper/111:07:521
2886999210,20cyclictest0-21swapper/107:35:141
2886899214,2cyclictest12466-21apt-key08:35:010
28870992018,1cyclictest0-21swapper/211:56:162
28869992011,0cyclictest0-21swapper/111:29:171
2887099193,11cyclictest18854-21munin-run10:40:002
2887099192,2cyclictest4051-21proc_pri10:10:192
28870991915,3cyclictest3985-21H222:10:212
2887099191,16cyclictest7391-21cpuspeed_turbos11:15:122
2886999192,1cyclictest4099-21H222:10:211
28869991916,2cyclictest0-21swapper/107:40:311
2886999191,1cyclictest0-21swapper/110:46:461
2886899192,15cyclictest0-21swapper/007:18:380
2886899192,15cyclictest0-21swapper/007:18:370
2886899190,3cyclictest20990-21tr09:45:130
2886899190,3cyclictest0-21swapper/007:53:450
2886899190,18cyclictest4099-21H222:10:210
2886899190,16cyclictest4035-21H222:10:210
2887099182,15cyclictest28-21ksoftirqd/211:50:472
2887099182,15cyclictest28-21ksoftirqd/211:28:162
2887099182,15cyclictest0-21swapper/212:25:112
28870991815,1cyclictest3989-21H222:10:212
2887099180,2cyclictest3989-21H222:10:212
28869991817,1cyclictest21-21ksoftirqd/107:47:211
28869991816,1cyclictest21-21ksoftirqd/110:57:031
28869991814,3cyclictest3985-21H222:10:211
2886999181,1cyclictest0-21swapper/108:43:531
2886999180,2cyclictest4035-21H222:10:211
2886999180,2cyclictest3983-21H222:10:211
2886999180,2cyclictest3935-21nvmesmart_nvme010:10:191
2886999180,18cyclictest0-21swapper/111:10:191
2886999180,17cyclictest22453-21munin-plugin-st07:55:011
2886999180,16cyclictest3985-21H222:10:211
2886899183,1cyclictest3983-21H222:10:210
2886899181,16cyclictest989-21gmain10:25:000
2886899181,16cyclictest31998-21sessionclean09:09:000
2886899180,2cyclictest4035-21H222:10:210
2886899180,2cyclictest3991-21H222:10:210
28870991714,2cyclictest6365-21grep12:10:142
28870991714,2cyclictest5937-21apache207:25:002
28870991714,2cyclictest5704-21turbostat09:20:002
28870991714,2cyclictest5108-21expr11:10:152
28870991714,2cyclictest3987-21H222:10:212
28870991714,2cyclictest3983-21H222:10:212
28870991714,2cyclictest30233-21nfsd410:00:162
28870991714,2cyclictest23345-21fschecks_time10:45:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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