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2026-04-06 - 18:12
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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 rack3slot6.osadl.org (updated Mon Apr 06, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
567421040,7sleep0171rcuc/007:39:100
26621210119,33sleep10-21swapper/107:06:421
26903210014,38sleep00-21swapper/007:09:130
34932820,12chrt151rcu_preempt10:35:241
27115997858,13cyclictest26-21ksoftirqd/109:15:111
942727610,42sleep014-21ksoftirqd/007:50:120
942727610,42sleep014-21ksoftirqd/007:50:120
27115997531,37cyclictest26-21ksoftirqd/110:13:421
27113996738,24cyclictest14-21ksoftirqd/012:30:010
2711599664,57cyclictest20858-21sshd08:20:261
2711399665,54cyclictest10629-21apt-get09:25:130
27115996522,38cyclictest26-21ksoftirqd/110:06:511
2711399657,16cyclictest0-21swapper/010:05:240
2711399656,17cyclictest0-21swapper/009:50:130
2711399656,17cyclictest0-21swapper/007:25:130
2711399655,19cyclictest6582-21apt-get10:45:150
27115996413,37cyclictest26-21ksoftirqd/111:28:011
27113996439,19cyclictest14-21ksoftirqd/012:35:270
27113996428,15cyclictest14-21ksoftirqd/008:40:000
27113996422,37cyclictest14-21ksoftirqd/011:05:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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