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2025-11-14 - 01:20
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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 Thu Nov 13, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180752448,8sleep00-21swapper/006:58:000
18560993433,0cyclictest167950irq/16-i91512:23:201
18560993432,1cyclictest167950irq/16-i91512:27:341
18560993432,1cyclictest167950irq/16-i91512:20:011
18560993432,1cyclictest167950irq/16-i91511:07:361
18560993432,1cyclictest167950irq/16-i91510:18:041
18560993432,1cyclictest167950irq/16-i91507:47:321
18559993433,0cyclictest245950irq/16-enp2s0f011:08:480
18559993433,0cyclictest245950irq/16-enp2s0f011:01:250
18559993433,0cyclictest245950irq/16-enp2s0f008:38:060
18559993432,1cyclictest245950irq/16-enp2s0f011:57:380
18559993432,1cyclictest245950irq/16-enp2s0f011:33:520
18559993432,1cyclictest245950irq/16-enp2s0f010:50:090
18559993432,1cyclictest245950irq/16-enp2s0f010:32:430
18559993432,1cyclictest245950irq/16-enp2s0f009:17:360
18559993432,1cyclictest245950irq/16-enp2s0f008:32:420
18559993432,1cyclictest245950irq/16-enp2s0f008:17:350
18559993432,1cyclictest245950irq/16-enp2s0f008:12:360
18559993432,1cyclictest245950irq/16-enp2s0f007:37:390
18559993432,1cyclictest245950irq/16-enp2s0f007:17:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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