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2025-11-07 - 21:43
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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 Fri Nov 07, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
191400,0ktimersoftd/117401-21perf06:20:361
2447123825,0sleep00-21swapper/006:20:030
2416623826,0sleep30-21swapper/306:16:263
2437223425,0sleep20-21swapper/206:18:532
246069988,0cyclictest0-21swapper/008:23:010
329970,0watchdog/326535-21cut11:06:063
329970,0watchdog/30-21swapper/308:51:513
329970,0watchdog/30-21swapper/306:56:153
8315060,0irq/26-0000:00:4669-21munin-run10:55:452
339960,0migration/327929-21sh10:48:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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