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2025-05-03 - 02:04
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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 Fri May 02, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3502520,3sleep11891699cyclictest07:51:251
1884524418,18sleep10-21swapper/107:06:011
1870324316,19sleep00-21swapper/007:04:320
271452360,3sleep11891699cyclictest09:21:251
18915993534,1cyclictest245950irq/16-enp2s0f011:36:300
18916993433,0cyclictest167950irq/16-i91512:11:141
18916993433,0cyclictest167950irq/16-i91511:10:031
18916993433,0cyclictest167950irq/16-i91509:10:571
18916993433,0cyclictest167950irq/16-i91508:05:181
18916993433,0cyclictest167950irq/16-i91507:38:031
18916993432,1cyclictest167950irq/16-i91512:24:581
18916993432,1cyclictest167950irq/16-i91510:04:121
18916993432,1cyclictest167950irq/16-i91508:25:091
18916993432,1cyclictest167950irq/16-i91508:08:021
18916993432,1cyclictest167950irq/16-i91507:21:211
18916993432,1cyclictest167950irq/16-i91507:11:211
18915993434,0cyclictest245950irq/16-enp2s0f007:56:540
18915993433,0cyclictest245950irq/16-enp2s0f012:20:540
18915993433,0cyclictest245950irq/16-enp2s0f012:11:140
18915993433,0cyclictest245950irq/16-enp2s0f011:28:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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