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2026-08-27 - 20:42
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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 rackfslot7.osadl.org (updated Thu Aug 27, 2026 12:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
682410999012,59cyclictest687770-21munin-run07:20:001
682410997737,39cyclictest85750irq/36-eno1-TxRx-209:45:211
682410997618,39cyclictest800049-21threads10:40:201
68241099668,39cyclictest701374-21taskset07:40:481
68241099624,39cyclictest757536-21fschecks_count09:25:161
682410996023,19cyclictest85750irq/36-eno1-TxRx-207:35:201
68241099602,19cyclictest784434-21munin-run10:15:021
68241099591,39cyclictest805697-21unixbench-2d10:50:241
682413995840,17cyclictest749931-21cat09:10:204
682410995638,18cyclictest833728-21apt11:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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