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2026-05-17 - 05:44
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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 rackbslot7.osadl.org (updated Sun May 17, 2026 00:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27951214010,102sleep00-21swapper/018:56:280
2788521229,73sleep127887-21diskstats18:56:251
292009911956,13cyclictest0-21swapper/122:51:021
292009911956,13cyclictest0-21swapper/122:51:021
1539221130,5sleep115366-21ssh00:01:041
292009910442,18cyclictest12409-21latency_hist23:56:031
292009910346,15cyclictest20146-21http22:21:051
291919910040,36cyclictest24784-21ssh21:33:240
2920099962,47cyclictest5778-21apt-get22:51:161
2920099962,47cyclictest5778-21apt-get22:51:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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