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2026-09-12 - 13:56
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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 Sat Sep 12, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2862125250,0sleep30-21swapper/307:32:233
2829023626,0sleep10-21swapper/107:28:331
2863223522,0sleep20-21swapper/207:32:302
2825422918,0sleep00-21swapper/007:28:040
2870799109,0cyclictest0-21swapper/009:34:110
287089970,0cyclictest25741-21date09:22:341
339960,0migration/36693-21sh10:45:503
339960,0migration/327492-21sh12:52:383
339960,0migration/323874-21sh12:28:103
339960,0migration/320162-21sh11:48:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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