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2026-05-23 - 23:14
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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 rack1slot8.osadl.org (updated Sat May 23, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2182999924809,84cyclictest24290-21iostat07:15:171
215502792771,13sleep10-21swapper/107:07:311
2182899782723,49cyclictest0-21swapper/011:12:120
2182999752692,44cyclictest0-21swapper/111:12:131
21828991337,93cyclictest0-21swapper/007:15:170
228699860,13rtkit-daemon0-21swapper/011:18:251
21828998454,23cyclictest0-21swapper/011:16:500
149922810,11sleep00-21swapper/011:35:120
149922810,11sleep00-21swapper/011:35:120
2116627730,31sleep00-21swapper/007:05:230
228699760,13rtkit-daemon0-21swapper/012:08:410
228699740,4rtkit-daemon2285-21rtkit-daemon09:15:171
228699680,4rtkit-daemon2285-21rtkit-daemon10:02:280
2182999686,47cyclictest0-21swapper/107:42:591
2182999685,39cyclictest0-21swapper/107:54:591
21828996840,23cyclictest0-21swapper/010:54:350
21828996824,39cyclictest7401-21ssh09:23:180
2182999676,39cyclictest0-21swapper/110:08:001
21828996717,27cyclictest6071-21ssh12:15:320
289272660,3sleep128926-21df_abs11:00:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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