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2026-08-06 - 05:26
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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 20 highest latencies:
System rackdslot0.osadl.org (updated Thu Aug 06, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30111992811,2cyclictest10562-21mii-tool19:30:140
30123992623,2cyclictest9881-21turbostat00:15:012
30123992423,0cyclictest0-21swapper/223:55:162
30118992412,10cyclictest15538-21munin-run21:35:011
3012399235,3cyclictest11755-21postgres19:31:212
3012399233,19cyclictest0-21swapper/220:03:352
30123992317,2cyclictest0-21swapper/220:17:032
3011899238,1cyclictest1100-21snmpd22:16:411
30111992321,1cyclictest9-21ksoftirqd/022:22:070
3011199230,5cyclictest5044-21needreboot19:20:170
3011199230,5cyclictest5044-21needreboot19:20:170
3011199230,5cyclictest0-21swapper/022:00:170
3012399225,2cyclictest5570-21latency00:05:222
3012399225,2cyclictest14931-21gpgv22:30:012
3012399225,2cyclictest10674-21cut22:20:192
3012399225,16cyclictest29813-21expr20:05:182
3012399225,16cyclictest14039-21sed23:25:022
3012399224,17cyclictest9138-21ntpq21:20:212
30123992219,2cyclictest3242-21gpgv22:10:012
30123992219,2cyclictest2579-21cat21:10:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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