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2025-12-02 - 13:00
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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 Tue Dec 02, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
589524616,22sleep00-21swapper/019:01:230
6011993534,0cyclictest245950irq/16-enp2s0f023:32:120
6012993432,1cyclictest185550irq/16-nvkm23:42:111
6012993432,1cyclictest167950irq/16-i91522:35:141
6012993432,1cyclictest167950irq/16-i91522:16:131
6012993432,1cyclictest167950irq/16-i91521:27:131
6012993432,1cyclictest167950irq/16-i91500:22:111
6011993434,0cyclictest245950irq/16-enp2s0f023:26:080
6011993433,0cyclictest245950irq/16-enp2s0f023:59:550
6011993432,1cyclictest245950irq/16-enp2s0f023:52:120
6011993432,1cyclictest245950irq/16-enp2s0f022:40:480
6011993432,1cyclictest245950irq/16-enp2s0f022:27:190
6011993432,1cyclictest245950irq/16-enp2s0f022:12:170
6011993432,1cyclictest245950irq/16-enp2s0f021:57:120
6011993432,1cyclictest245950irq/16-enp2s0f020:57:170
6011993432,1cyclictest245950irq/16-enp2s0f020:27:170
6011993432,1cyclictest245950irq/16-enp2s0f019:32:570
6011993432,1cyclictest245950irq/16-enp2s0f000:27:180
6011993430,0cyclictest167950irq/16-i91522:17:170
55272349,17sleep10-21swapper/118:57:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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