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2025-12-14 - 19:38
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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 rack0slot7.osadl.org (updated Sun Dec 14, 2025 00:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15117699390390,0cyclictest2072-21snmpd22:37:043
15116999390389,0cyclictest0-21swapper/419:40:1510
151179993890,388cyclictest0-21swapper/1420:11:576
15116999389389,0cyclictest0-21swapper/420:29:3310
15116999389389,0cyclictest0-21swapper/419:27:2410
15116999389389,0cyclictest0-21swapper/419:14:4810
15116999388388,0cyclictest0-21swapper/422:35:2310
15116999388388,0cyclictest0-21swapper/421:20:1610
15116999388388,0cyclictest0-21swapper/420:00:3110
15116999388388,0cyclictest0-21swapper/419:51:1910
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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