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2026-05-20 - 07:17
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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 Wed May 20, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
208499918031738,58cyclictest0-21swapper/019:40:190
206102970949,13sleep10-21swapper/119:07:581
2085099859811,35cyclictest21308-21df_inode19:10:181
206292641619,15sleep00-21swapper/019:08:090
20850994822,458cyclictest32474-21strings19:40:191
20849999410,78cyclictest0-21swapper/021:14:590
193492920,4sleep119348-21ssh22:41:031
20849998615,66cyclictest0-21swapper/023:13:590
228699850,7rtkit-daemon0-21swapper/020:59:420
2084999835,71cyclictest31858-21diskmemload00:03:590
2084999835,71cyclictest31858-21diskmemload00:03:590
20850998214,55cyclictest0-21swapper/123:10:001
2084999823,73cyclictest16790-21ssh21:40:020
228699810,5rtkit-daemon2285-21rtkit-daemon23:15:191
228699810,5rtkit-daemon2285-21rtkit-daemon21:00:121
228699800,4rtkit-daemon2285-21rtkit-daemon23:33:441
228699790,5rtkit-daemon2285-21rtkit-daemon22:58:181
228699790,5rtkit-daemon2285-21rtkit-daemon20:10:511
228699780,4rtkit-daemon2285-21rtkit-daemon22:46:041
20850997812,53cyclictest0-21swapper/119:50:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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