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2025-09-10 - 08:28
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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 rack0slot4.osadl.org (updated Wed Sep 10, 2025 00:46:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5735742371363,5sleep50-21swapper/519:07:0611
5735262362341,13sleep100-21swapper/1019:06:242
5735712360316,14sleep20-21swapper/219:07:048
5736732353312,15sleep10-21swapper/119:08:231
5736512353344,6sleep30-21swapper/319:08:089
5736432350309,14sleep120-21swapper/1219:08:014
5736982347325,14sleep90-21swapper/919:08:4715
5737322344321,15sleep60-21swapper/619:09:1712
5736572343320,15sleep80-21swapper/819:08:1314
5735732343321,14sleep40-21swapper/419:07:0510
5735082342319,15sleep150-21swapper/1519:06:137
5735442341318,14sleep110-21swapper/1119:06:403
5735662340317,15sleep140-21swapper/1419:06:596
5735652339315,15sleep130-21swapper/1319:06:585
5735692338316,14sleep00-21swapper/019:07:010
5734802338315,15sleep70-21swapper/719:05:4813
57422099102101,1cyclictest855783-21nodev-device-ev00:35:1910
574242998281,1cyclictest804477-21nodev-device-ev23:35:183
574242998281,1cyclictest684748-21nodev-device-ev21:15:203
574222997776,1cyclictest0-21swapper/522:45:1911
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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