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2025-12-11 - 09:02
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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
Characteristics of the 20 highest latencies:
System rack6slot6 (updated Thu Dec 11, 2025 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
327019910719853461,53641cyclictest1911-21snmpd00:02:290
327019910713353464,53603cyclictest0-21swapper22:14:580
327019910701853386,53588cyclictest0-21swapper00:18:240
327019910700753409,53532cyclictest0-21swapper00:06:000
327019910688053450,53365cyclictest133750irq/9-eth021:28:550
327019910672953415,53224cyclictest11-21rcu_preempt23:14:550
327019910652453472,53052cyclictest0-21swapper21:14:510
327019910651953476,53043cyclictest0-21swapper22:23:410
327019910651953471,53048cyclictest0-21swapper20:45:520
327019910651153414,53097cyclictest0-21swapper19:44:250
327019910649753459,53038cyclictest0-21swapper22:47:070
327019910646053407,53053cyclictest0-21swapper22:29:020
327019910644253443,52999cyclictest0-21swapper21:06:080
327019910643753440,52997cyclictest0-21swapper20:15:040
327019910642553429,52996cyclictest0-21swapper23:04:320
327019910634453441,52811cyclictest0-21swapper19:25:090
327019910631153443,52868cyclictest0-21swapper19:13:560
327019910629353470,52759cyclictest9-21ksoftirqd/019:22:080
327019910618553415,52770cyclictest0-21swapper22:51:590
327019910617453446,52728cyclictest0-21swapper22:18:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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