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2026-07-13 - 12:41
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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 rack0slot5.osadl.org (updated Mon Jul 13, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268486899635635,0cyclictest0-21swapper/219:28:228
268491599500470,30cyclictest0-21swapper/1420:05:226
268491399500497,3cyclictest0-21swapper/1323:08:225
268486899490488,2cyclictest0-21swapper/200:00:228
268489499483482,1cyclictest2923368-21kworker/9:1+i915-unordered23:53:2215
26849159947520,58cyclictest0-21swapper/1420:45:456
26848769946421,30cyclictest0-21swapper/420:52:2210
2684913994621,458cyclictest0-21swapper/1323:43:225
268488799462461,0cyclictest2755808-21kworker/7:1+i915-unordered20:42:2213
268486399461459,2cyclictest2857519-21kworker/1:3+i915-unordered22:24:221
268486399461459,2cyclictest2857519-21kworker/1:3+i915-unordered22:24:221
26849159945918,30cyclictest0-21swapper/1420:28:226
268490099454453,1cyclictest2918683-21kworker/10:1+i915-unordered23:27:222
268488099454453,1cyclictest2875248-21kworker/5:1+i915-unordered23:08:2211
268486399451450,1cyclictest0-21swapper/123:53:221
26849159945022,30cyclictest0-21swapper/1420:24:456
268487199449448,1cyclictest69750irq/159-i91519:20:229
2684920994483,28cyclictest0-21swapper/1521:32:457
26849209944729,417cyclictest0-21swapper/1521:09:457
2684915994474,30cyclictest0-21swapper/1421:15:226
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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