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2026-06-18 - 12:20
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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 Jun 18, 2026 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2942399252,18cyclictest0-21swapper/021:40:010
2942399240,19cyclictest17070-21nfsd422:35:170
2942499222,17cyclictest0-21swapper/123:33:471
2942599214,2cyclictest3981-21H222:10:212
2942499213,11cyclictest5937-21latency_hist23:15:011
2942499211,15cyclictest21-21ksoftirqd/122:37:331
29423992114,4cyclictest26432-21munin-run21:00:000
2942499200,16cyclictest4035-21H222:10:211
2942399203,15cyclictest3981-21H222:10:210
2942399202,17cyclictest0-21swapper/000:36:020
2942599193,15cyclictest4035-21H222:10:212
29425991915,2cyclictest3983-21H222:10:212
29425991914,2cyclictest3979-21H222:10:212
2942599190,16cyclictest4035-21H222:10:212
2942599190,16cyclictest3985-21H222:10:212
29424991919,0cyclictest0-21swapper/100:00:211
29424991919,0cyclictest0-21swapper/100:00:211
29424991917,1cyclictest3204-21JS22:10:211
29424991917,1cyclictest21-21ksoftirqd/120:53:451
29424991913,4cyclictest1100-21snmpd23:15:171
2942499190,2cyclictest3985-21H222:10:211
2942499190,2cyclictest3981-21H222:10:211
2942499190,16cyclictest4035-21H222:10:211
2942499190,16cyclictest3985-21H222:10:211
2942499190,16cyclictest3981-21H222:10:211
2942399192,16cyclictest0-21swapper/019:27:340
29423991917,1cyclictest9-21ksoftirqd/022:01:480
29423991917,1cyclictest9-21ksoftirqd/021:49:490
29423991917,1cyclictest0-21swapper/023:04:550
29423991914,2cyclictest4035-21H222:10:210
2942399191,17cyclictest4099-21H222:10:210
2942399190,4cyclictest4035-21H222:10:210
2942399190,3cyclictest5072-21munin-run00:10:010
2942399190,1cyclictest0-21swapper/023:30:010
2942399190,18cyclictest0-21swapper/021:05:010
2942399190,16cyclictest3983-21H222:10:210
2942399190,16cyclictest3983-21H222:10:210
2942399190,16cyclictest3981-21H222:10:210
2942599182,1cyclictest29792-21awk22:00:172
29425991816,1cyclictest0-21swapper/200:05:172
29425991815,2cyclictest30175-21taskset20:08:412
29425991814,3cyclictest3987-21H222:10:212
29425991814,3cyclictest3976-21H222:10:212
29425991814,3cyclictest3976-21H222:10:212
29425991814,3cyclictest27164-21expr21:00:132
29425991813,2cyclictest3987-21H222:10:212
2942599181,2cyclictest29070-21cstates23:55:142
2942599180,2cyclictest3987-21H222:10:212
2942599180,2cyclictest3987-21H222:10:212
2942599180,17cyclictest3981-21H222:10:212
2942599180,17cyclictest14071-21missed_timers22:30:172
2942499182,15cyclictest21-21ksoftirqd/119:15:131
29424991816,1cyclictest201rcuc/123:06:001
29424991815,2cyclictest201rcuc/120:00:131
29424991814,3cyclictest3989-21H222:10:211
29424991814,3cyclictest3987-21H222:10:211
29424991814,3cyclictest0-21swapper/123:28:261
2942499181,15cyclictest111rcu_preempt23:02:481
2942499180,2cyclictest3987-21H222:10:211
2942499180,2cyclictest3979-21H222:10:211
2942499180,2cyclictest3976-21H222:10:211
2942499180,1cyclictest111rcu_preempt00:15:311
2942499180,17cyclictest4099-21H222:10:211
2942399183,15cyclictest9-21ksoftirqd/021:58:060
29423991816,1cyclictest9-21ksoftirqd/000:27:550
29423991816,1cyclictest9-21ksoftirqd/000:27:550
29423991815,2cyclictest421-21expr23:05:130
29423991815,2cyclictest3989-21H222:10:210
29423991815,1cyclictest0-21swapper/023:34:340
29423991813,2cyclictest3979-21H222:10:210
2942399181,2cyclictest3985-21H222:10:210
2942399180,3cyclictest4035-21H222:10:210
2942399180,2cyclictest3987-21H222:10:210
2942399180,2cyclictest3976-21H222:10:210
2942399180,17cyclictest0-21swapper/022:40:020
2942399180,16cyclictest3989-21H222:10:210
29425991715,1cyclictest0-21swapper/223:25:152
29425991715,1cyclictest0-21swapper/223:00:212
29425991715,1cyclictest0-21swapper/220:30:122
29425991715,1cyclictest0-21swapper/220:11:472
29425991715,1cyclictest0-21swapper/219:25:162
29425991714,2cyclictest4848-21nfsd423:10:192
29425991714,2cyclictest4035-21H222:10:212
29425991714,2cyclictest3989-21H222:10:212
29425991714,2cyclictest3989-21H222:10:212
29425991714,2cyclictest3989-21H222:10:212
29425991714,2cyclictest3981-21H222:10:212
29425991714,2cyclictest3979-21H222:10:212
29425991714,2cyclictest3251-21cpuspeed_turbos19:20:152
29425991714,2cyclictest3251-21cpuspeed_turbos19:20:142
29425991714,2cyclictest27444-21timerandwakeup21:55:202
29425991714,2cyclictest18670-21apache_processe22:40:122
29425991714,2cyclictest1114-21lldpd00:13:012
29425991713,3cyclictest3979-21H222:10:212
2942599171,2cyclictest4099-21H222:10:212
29425991712,2cyclictest4035-21H222:10:212
2942599171,15cyclictest0-21swapper/222:24:052
2942599171,15cyclictest0-21swapper/222:24:042
2942599171,15cyclictest0-21swapper/200:30:122
2942599170,3cyclictest19006-21nfsd423:35:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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