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2025-08-21 - 22:15
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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 Aug 21, 2025 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86392610,1sleep08640-22ntp_kernel_pll_08:29:150
147832439,8sleep10-21swapper/107:01:071
15120993534,0cyclictest167950irq/16-i91510:26:501
15120993433,0cyclictest167950irq/16-i91512:24:551
15120993432,1cyclictest167950irq/16-i91510:00:451
15120993432,1cyclictest167950irq/16-i91508:27:251
15120993432,1cyclictest167950irq/16-i91507:44:471
15119993434,0cyclictest245950irq/16-enp2s0f011:01:210
15119993433,0cyclictest245950irq/16-enp2s0f012:21:160
15119993433,0cyclictest245950irq/16-enp2s0f009:51:220
15119993432,1cyclictest245950irq/16-enp2s0f012:29:120
15119993432,1cyclictest245950irq/16-enp2s0f011:34:170
15119993432,1cyclictest245950irq/16-enp2s0f011:29:100
15119993432,1cyclictest245950irq/16-enp2s0f011:09:110
15119993432,1cyclictest245950irq/16-enp2s0f010:39:110
15119993432,1cyclictest245950irq/16-enp2s0f010:29:180
15119993432,1cyclictest245950irq/16-enp2s0f010:02:170
15119993432,1cyclictest245950irq/16-enp2s0f009:54:140
15119993432,1cyclictest245950irq/16-enp2s0f009:14:120
15119993432,1cyclictest245950irq/16-enp2s0f008:24:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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