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2026-03-19 - 08:46
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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 Mar 19, 2026 00:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
292027599169167,1cyclictest3013686-21munin-run22:00:025
292027499105104,0cyclictest3064220-21ld23:30:204
2920274997555,20cyclictest3058047-21tune2fs23:20:144
2920274997555,20cyclictest3058047-21tune2fs23:20:144
2920274997437,18cyclictest876-21mta-sts-daemon21:35:144
2920274997437,18cyclictest2920269-21cyclictest22:37:204
2920274997012,39cyclictest3071112-21/usr/sbin/munin23:45:164
2920274996828,39cyclictest0-21swapper/421:16:424
2920274996729,38cyclictest0-21swapper/420:41:064
2920274996526,39cyclictest0-21swapper/420:36:164
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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