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2026-05-20 - 12:58
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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
Characteristics of the 20 highest latencies:
System rack6slot2.osadl.org (updated Wed May 20, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
393624515,22sleep00-21swapper/019:04:190
38042409,24sleep10-21swapper/119:02:571
4332993534,0cyclictest246650irq/16-enp2s0f023:38:140
4332993534,0cyclictest246650irq/16-enp2s0f022:52:500
4332993534,0cyclictest246650irq/16-enp2s0f020:13:160
4332993534,0cyclictest246650irq/16-enp2s0f019:36:000
4332993534,0cyclictest246650irq/16-enp2s0f000:13:270
4333993433,0cyclictest246650irq/16-enp2s0f020:38:381
4333993433,0cyclictest168750irq/16-i91519:31:421
4333993432,1cyclictest246650irq/16-enp2s0f023:28:471
4333993432,1cyclictest246650irq/16-enp2s0f023:00:451
4333993432,1cyclictest246650irq/16-enp2s0f022:21:591
4333993432,1cyclictest246650irq/16-enp2s0f021:32:501
4333993432,1cyclictest246650irq/16-enp2s0f021:14:091
4333993432,1cyclictest246650irq/16-enp2s0f019:17:511
4333993432,1cyclictest168750irq/16-i91520:28:291
4333993432,1cyclictest168750irq/16-i91500:36:561
4332993433,0cyclictest246650irq/16-enp2s0f023:17:230
4332993433,0cyclictest246650irq/16-enp2s0f023:08:220
4332993433,0cyclictest246650irq/16-enp2s0f022:27:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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