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2025-09-19 - 02:08
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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 rackaslot8.osadl.org (updated Thu Sep 18, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212492304272,20sleep20-21swapper/207:06:282
212502274239,22sleep30-21swapper/307:06:293
211812274210,22sleep10-21swapper/107:05:351
212022265232,21sleep00-21swapper/007:05:500
149142610,0sleep20-21swapper/209:37:042
144342600,0sleep30-21swapper/310:25:073
293392580,0sleep10-21swapper/109:48:171
184652580,0sleep00-21swapper/009:40:160
137972570,0sleep00-21swapper/011:49:490
207882550,0sleep00-21swapper/009:15:560
285692540,0sleep10-21swapper/110:11:351
83552530,0sleep10-21swapper/111:24:591
213982150,0sleep00-21swapper/011:33:040
285832130,0sleep20-21swapper/211:16:112
21628991310,2cyclictest12-21ksoftirqd/012:00:000
199382130,0sleep20-21swapper/211:53:322
2162899129,2cyclictest12-21ksoftirqd/011:00:000
2162899129,2cyclictest12-21ksoftirqd/007:15:010
2162899118,2cyclictest12-21ksoftirqd/010:25:010
2162899108,2cyclictest12-21ksoftirqd/010:45:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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