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2026-03-11 - 16:43
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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 10 highest latencies:
System rack1slot2.osadl.org (updated Wed Mar 11, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1380123928,0sleep00-21swapper/007:14:470
1366923828,0sleep30-21swapper/307:13:143
1393123728,0sleep10-21swapper/107:16:161
1383022723,0sleep20-21swapper/207:15:052
149970,0migration/031678-21sh09:17:440
8305060,0irq/26-0000:00:32146-21turbostat07:57:173
339960,0migration/328294-21sh10:51:243
339960,0migration/327395-21latency08:07:413
339960,0migration/325982-21irqcore12:42:393
339960,0migration/324371-21sh11:27:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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