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2026-05-24 - 12:25
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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 20 highest latencies:
System rack1slot8.osadl.org (updated Sun May 24, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39132904881,15sleep10-21swapper/119:09:061
404399373304,37cyclictest0-21swapper/119:13:241
404299366291,69cyclictest0-21swapper/019:13:250
2286991360,7rtkit-daemon2285-21rtkit-daemon19:08:080
3011421120,3sleep030116-21cut20:20:200
404299792,71cyclictest21500-21grep23:15:280
404399725,61cyclictest0-21swapper/122:42:031
404299712,62cyclictest19410-21ssh22:15:120
404299712,54cyclictest9032-21ssh23:51:350
404299712,54cyclictest23537-21ssh00:18:420
4042997116,49cyclictest88850irq/46-eth0-tx-21:16:450
404299702,61cyclictest8402-21ssh22:52:530
404299702,61cyclictest22708-21ssh21:22:130
404299702,61cyclictest14976-21ssh22:05:270
404299702,49cyclictest20411-21munin-node19:55:120
404299702,47cyclictest14271-21ssh23:03:550
404299702,46cyclictest4930-21ssh21:48:360
404299702,46cyclictest32762-21ssh22:39:010
404299702,41cyclictest26362-21irqstats20:10:160
4042997015,48cyclictest0-21swapper/022:45:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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