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2026-07-09 - 08:25
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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 Thu Jul 09, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1962024836,0sleep10-21swapper/119:26:591
1946923726,0sleep00-21swapper/019:25:140
1926123626,0sleep30-21swapper/319:22:453
1961123425,0sleep20-21swapper/219:26:522
8305060,0irq/26-0000:00:27409-21if_eth1.322:57:282
339960,0migration/37597-21sh23:57:463
339960,0migration/37325-21sh00:56:313
339960,0migration/331925-21gltestperf20:42:253
339960,0migration/331532-21sh21:42:343
339960,0migration/328737-21latency00:47:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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