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2026-03-29 - 19:16
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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
Characteristics of the 10 highest latencies:
System rackdslot0.osadl.org (updated Sun Mar 29, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
338499254,6cyclictest14779-21apache208:25:012
338499214,11cyclictest23288-21munin-run07:45:012
338399215,9cyclictest0-21swapper/107:20:131
338299212,18cyclictest0-21swapper/011:16:150
338499202,15cyclictest0-21swapper/209:30:132
3383992018,1cyclictest0-21swapper/110:30:121
338299203,9cyclictest8743-21python311:05:010
338499193,1cyclictest22473-21http_loadtime12:25:172
338499193,1cyclictest22473-21http_loadtime12:25:162
338399197,11cyclictest0-21swapper/108:10:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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