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2026-07-19 - 12:58
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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 Sun Jul 19, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
849992718,9cyclictest0-21swapper/122:22:221
850992614,1cyclictest0-21swapper/222:35:222
849992314,9cyclictest0-21swapper/100:35:161
84999230,18cyclictest0-21swapper/120:45:391
85099220,7cyclictest843-21systemd-network21:52:052
849992218,3cyclictest993-21dbus-daemon00:20:211
849992212,10cyclictest28434-21kworker/1:122:06:031
849992212,10cyclictest28434-21kworker/1:122:06:021
84899220,21cyclictest0-21swapper/022:23:560
848992120,1cyclictest6962-21mii-tool00:05:160
85099204,2cyclictest3987-21H222:10:212
850992016,3cyclictest2872-21systemd-logind21:04:522
84899203,16cyclictest0-21swapper/020:48:570
84899202,17cyclictest0-21swapper/022:45:000
84899200,18cyclictest27394-21sort19:55:150
85099192,1cyclictest9586-21latency20:20:172
850991917,1cyclictest28-21ksoftirqd/200:07:302
850991916,2cyclictest3976-21H222:10:212
85099190,2cyclictest3983-21H222:10:212
84999192,2cyclictest12162-21chrt23:16:311
84999192,16cyclictest15531-21proc_pri22:25:201
849991917,1cyclictest21-21ksoftirqd/119:46:321
84999190,16cyclictest3991-21H222:10:211
84899193,15cyclictest0-21swapper/023:29:000
84899193,15cyclictest0-21swapper/019:25:140
84899192,16cyclictest10842-21which23:15:170
84899192,16cyclictest10035-21sed19:25:000
84899192,16cyclictest0-21swapper/020:29:350
84899192,16cyclictest0-21swapper/000:11:380
848991917,1cyclictest203462chrt23:31:120
848991917,1cyclictest14944-21cat22:25:160
848991917,1cyclictest0-21swapper/021:40:140
848991916,2cyclictest8931-21cut23:10:190
848991916,2cyclictest31943-21cat22:00:000
848991915,3cyclictest31792-21grep20:05:010
84899190,3cyclictest0-21swapper/022:30:220
84899190,2cyclictest3991-21H222:10:210
84899190,18cyclictest0-21swapper/022:00:180
84899190,18cyclictest0-21swapper/020:44:170
84899190,16cyclictest3987-21H222:10:210
85099183,1cyclictest28-21ksoftirqd/200:11:342
85099182,15cyclictest31622-21latency22:55:182
85099182,15cyclictest0-21swapper/219:34:122
85099182,15cyclictest0-21swapper/219:27:172
850991816,1cyclictest0-21swapper/222:19:182
850991815,2cyclictest3979-21H222:10:212
850991815,2cyclictest19804-21smartctl21:35:192
850991814,3cyclictest843-21systemd-network21:09:172
85099180,2cyclictest4099-21H222:10:212
85099180,2cyclictest3989-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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