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2026-08-19 - 20:16
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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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack1slot2.osadl.org (updated Wed Aug 19, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1284723827,0sleep30-21swapper/307:28:573
1294423625,0sleep20-21swapper/207:30:042
1290423018,0sleep00-21swapper/007:29:340
1275723020,0sleep10-21swapper/107:27:551
130779983,0cyclictest9341-21awk10:55:520
130779983,0cyclictest3524-21snmpd07:45:430
130779983,0cyclictest23881-21sadc08:00:360
130779983,0cyclictest17765-21awk11:00:520
130779983,0cyclictest12903-21awk11:35:530
130779980,0cyclictest27674-21munin-node07:40:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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