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2026-08-14 - 15:06
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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 rack1slot2.osadl.org (updated Fri Aug 14, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1452824130,0sleep00-21swapper/007:27:480
1465323827,0sleep30-21swapper/307:29:193
1447923627,0sleep20-21swapper/207:27:182
1458222826,0sleep10-21swapper/107:28:251
14800991212,0cyclictest3524-21snmpd07:52:050
148029976,0cyclictest0-21swapper/212:40:322
339960,0migration/39167-21sh09:35:413
339960,0migration/320863-21sh10:03:073
339960,0migration/320407-21munin-node08:40:293
339960,0migration/314890-21sh10:20:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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