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2025-11-30 - 00:31
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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 Sat Nov 29, 2025 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
287572399,8sleep10-21swapper/107:01:191
28890993533,1cyclictest245950irq/16-enp2s0f012:22:191
28889993534,0cyclictest245950irq/16-enp2s0f007:20:370
28889993533,1cyclictest245950irq/16-enp2s0f008:19:460
28890993433,0cyclictest167950irq/16-i91508:46:541
28890993432,1cyclictest245950irq/16-enp2s0f009:47:211
28890993432,1cyclictest245950irq/16-enp2s0f007:57:181
28890993432,1cyclictest167950irq/16-i91511:22:171
28890993432,1cyclictest167950irq/16-i91509:24:571
28890993432,1cyclictest167950irq/16-i91509:07:181
28890993432,1cyclictest167950irq/16-i91508:08:221
28889993433,0cyclictest245950irq/16-enp2s0f012:19:540
28889993433,0cyclictest245950irq/16-enp2s0f009:32:140
28889993432,1cyclictest245950irq/16-enp2s0f012:02:220
28889993432,1cyclictest245950irq/16-enp2s0f010:34:540
28889993432,1cyclictest245950irq/16-enp2s0f009:42:150
28889993432,1cyclictest245950irq/16-enp2s0f008:02:240
28889993432,1cyclictest245950irq/16-enp2s0f007:37:200
28889993432,1cyclictest245950irq/16-enp2s0f007:02:160
28890993332,1cyclictest167950irq/16-i91507:27:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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