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2026-04-21 - 07:04
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Tue Apr 21, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29612462264186,29sleep00-21swapper/019:09:190
29611722249183,51sleep10-21swapper/119:08:311
30140572730,3sleep13014060-21grep21:15:221
29635622700,5sleep02963559-21apt-config19:15:020
31470212590,4sleep03147019-21seq00:25:110
30520302510,4sleep00-21swapper/022:08:210
31156972450,2sleep00-21swapper/023:36:410
30164462450,2sleep00-21swapper/021:19:270
29959792450,3sleep10-21swapper/120:35:151
179699440,11rtkit-daemon0-21swapper/100:39:271
179699410,3rtkit-daemon0-21swapper/021:31:330
2961429993935,2cyclictest0-21swapper/122:25:221
179699390,5rtkit-daemon2985811-21cron20:10:001
179699390,5rtkit-daemon2985811-21cron20:09:591
31390872380,4sleep10-21swapper/100:10:171
179699380,3rtkit-daemon0-21swapper/022:33:111
31349702310,2sleep10-21swapper/100:04:171
30889482310,3sleep03088951-21fschecks_time23:00:180
179699310,4rtkit-daemon1795-21rtkit-daemon21:47:080
30528192290,5sleep13052772-21python322:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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