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2026-06-09 - 18:39
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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 Tue Jun 09, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1480426453,0sleep20-21swapper/207:21:172
15184994848,0cyclictest28020-21md1_resync08:47:102
1494024645,0sleep10-21swapper/107:22:521
1506324230,0sleep00-21swapper/007:24:110
15183993535,0cyclictest191ktimersoftd/108:47:101
1502723227,0sleep30-21swapper/307:23:503
15184991313,0cyclictest83050irq/26-0000:00:11:01:402
15184991212,0cyclictest18202-21sadc11:44:482
151849988,0cyclictest83050irq/26-0000:00:10:34:102
339970,0migration/38517-21sh08:00:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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