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2025-09-15 - 11:31
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack5slot3.osadl.org (updated Mon Sep 15, 2025 00:50:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2400029051,33sleep10-21swapper/119:05:181
2531128248,30sleep20-21swapper/219:07:042
2366428239,36sleep00-21swapper/019:05:170
2542928147,30sleep70-21swapper/719:08:447
2526928148,29sleep50-21swapper/519:06:265
2537128046,29sleep60-21swapper/619:07:566
205722790,0sleep50-21swapper/500:28:035
2291927844,29sleep40-21swapper/419:05:054
2525627542,29sleep30-21swapper/319:06:153
101202540,0sleep00-21swapper/022:48:460
276312510,0sleep00-21swapper/020:05:140
307932480,0sleep20-21swapper/221:25:062
156722480,0sleep60-21swapper/623:38:336
50402450,0sleep40-21swapper/421:27:554
286942380,1sleep557-21ksoftirqd/523:13:185
25949993836,1cyclictest25971-21apt-get19:10:134
25952992323,0cyclictest0-21swapper/722:00:567
25947992323,0cyclictest0-21swapper/223:09:232
25952992121,0cyclictest0-21swapper/723:00:147
25952992121,0cyclictest0-21swapper/721:48:187
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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