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2026-03-23 - 21:50
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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 rackcslot2.osadl.org (updated Mon Mar 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3050427461,8sleep10-21swapper/107:08:281
3016426857,7sleep00-21swapper/007:04:530
247822610,0sleep10-21swapper/110:09:341
30767993910,0cyclictest0-21swapper/108:44:421
3076699310,30cyclictest0-21swapper/008:44:290
3076699300,29cyclictest0-21swapper/011:34:540
30767992929,0cyclictest0-21swapper/110:32:551
30767992929,0cyclictest0-21swapper/109:44:331
3076699290,26cyclictest0-21swapper/007:17:210
30766992710,2cyclictest0-21swapper/011:21:410
30767992622,4cyclictest8223-21apache211:58:561
30766992619,3cyclictest81ktimersoftd/010:03:590
30767992520,3cyclictest24205-21munin-node11:27:001
30767992510,7cyclictest0-21swapper/112:20:161
30767992510,7cyclictest0-21swapper/109:21:401
30766992525,0cyclictest0-21swapper/008:59:390
3076699250,21cyclictest0-21swapper/009:45:510
3076799248,11cyclictest0-21swapper/107:34:331
30767992413,7cyclictest0-21swapper/109:54:351
3076699243,19cyclictest1497-21rm11:07:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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