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2026-07-17 - 20:23
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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 rack0slot2.osadl.org (updated Fri Jul 17, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8981152960,1sleep7898114-21nfs_client11:10:147
10969052950,1sleep71096906-21rm12:31:087
10327282940,1sleep40-21swapper/412:05:084
35527125621,30sleep70-21swapper/707:07:187
35531625443,7sleep50-21swapper/507:07:565
355728994240,2cyclictest572712-21kworker/u16:0+flush-8:012:15:004
35523823726,8sleep40-21swapper/407:06:514
355733993634,2cyclictest582847-21kworker/u16:3+events_unbound09:19:476
355728993634,2cyclictest572712-21kworker/u16:0+flush-8:011:44:594
355728993532,2cyclictest572712-21kworker/u16:0+flush-8:011:30:034
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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