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2026-05-08 - 21:26
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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 May 08, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14326992722,2cyclictest3311-21needreboot10:35:172
1432599220,18cyclictest0-21swapper/111:10:391
1432399222,17cyclictest0-21swapper/011:04:290
1432699210,20cyclictest843-21systemd-network09:52:232
1432599217,7cyclictest0-21swapper/107:40:001
1432699204,15cyclictest15113-21nfsd408:05:182
1432699200,6cyclictest843-21systemd-network10:29:302
1432699200,3cyclictest0-21swapper/209:17:302
1432599207,11cyclictest0-21swapper/108:50:181
14325992018,2cyclictest0-21swapper/108:30:141
1432699190,17cyclictest0-21swapper/207:50:002
14325991917,1cyclictest21-21ksoftirqd/111:33:491
14325991917,1cyclictest0-21swapper/111:03:581
14325991914,4cyclictest0-21swapper/111:47:461
1432599190,15cyclictest0-21swapper/107:12:041
1432399193,15cyclictest0-21swapper/011:58:190
1432399192,2cyclictest2103-21nfsd409:35:190
1432399192,2cyclictest20184-21grep09:10:140
1432399191,17cyclictest0-21swapper/010:20:170
1432399191,17cyclictest0-21swapper/008:27:160
1432399190,18cyclictest0-21swapper/011:17:110
1432399190,16cyclictest0-21swapper/012:39:270
1432699182,15cyclictest19316-21chrt07:15:202
14326991814,2cyclictest4035-21H222:10:212
14326991814,2cyclictest0-21swapper/212:35:172
1432699181,16cyclictest11126-21chrt08:00:072
14326991810,7cyclictest843-21systemd-network11:06:392
1432699180,1cyclictest0-21swapper/207:53:542
1432699180,17cyclictest1348-21lxd12:26:442
1432699180,17cyclictest0-21swapper/211:56:282
1432699180,16cyclictest31288-21apt-key07:40:022
14325991814,2cyclictest15116-21nfsd408:05:191
14325991813,1cyclictest0-21swapper/108:20:181
14325991813,1cyclictest0-21swapper/107:56:561
1432599180,3cyclictest30568-21grep12:20:171
1432599180,17cyclictest843-21systemd-network10:19:131
1432599180,16cyclictest3813-21proc_pri07:45:191
1432399182,15cyclictest0-21swapper/011:53:540
14323991816,1cyclictest0-21swapper/010:07:430
14323991816,1cyclictest0-21swapper/010:07:420
14323991816,1cyclictest0-21swapper/009:50:200
14323991815,2cyclictest7887-21latency_hist10:45:000
14323991815,2cyclictest7065-21cstates11:40:130
14323991815,2cyclictest30456-21nfsd412:20:160
1432399181,16cyclictest0-21swapper/009:21:560
14326991715,1cyclictest0-21swapper/211:50:222
14326991714,2cyclictest9664-21grep07:55:172
14326991714,2cyclictest7721-21kernelversion11:40:152
14326991714,2cyclictest6822-21/usr/sbin/munin09:45:212
14326991714,2cyclictest5256-21expr08:45:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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