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2025-12-10 - 11:10
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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 Dec 10, 2025 00:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2340324518,18sleep00-21swapper/019:01:190
2343924017,16sleep10-21swapper/119:01:421
23516993534,0cyclictest167950irq/16-i91522:41:331
23516993533,1cyclictest167950irq/16-i91522:41:521
23515993534,0cyclictest245950irq/16-enp2s0f021:08:350
23516993434,0cyclictest167950irq/16-i91519:43:231
23516993434,0cyclictest167950irq/16-i91500:09:301
23516993433,0cyclictest167950irq/16-i91523:31:401
23516993432,1cyclictest245950irq/16-enp2s0f000:29:371
23516993432,1cyclictest167950irq/16-i91520:22:081
23515993434,0cyclictest245950irq/16-enp2s0f020:49:100
23515993434,0cyclictest245950irq/16-enp2s0f020:49:100
23515993433,0cyclictest245950irq/16-enp2s0f023:46:530
23515993433,0cyclictest245950irq/16-enp2s0f023:34:230
23515993433,0cyclictest167950irq/16-i91523:04:040
23515993432,1cyclictest245950irq/16-enp2s0f023:37:040
23515993432,1cyclictest245950irq/16-enp2s0f023:12:050
23515993432,1cyclictest245950irq/16-enp2s0f022:57:040
23515993432,1cyclictest245950irq/16-enp2s0f022:52:050
23515993432,1cyclictest245950irq/16-enp2s0f022:47:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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