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2025-12-09 - 12:27
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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 09, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281702488,8sleep00-21swapper/018:57:460
284342449,8sleep10-21swapper/119:00:261
28631993533,1cyclictest245950irq/16-enp2s0f022:27:090
28632993433,0cyclictest167950irq/16-i91522:47:151
28632993433,0cyclictest167950irq/16-i91521:54:181
28632993432,1cyclictest167950irq/16-i91523:17:051
28632993432,1cyclictest167950irq/16-i91522:21:181
28632993432,1cyclictest167950irq/16-i91520:41:531
28632993432,1cyclictest167950irq/16-i91519:31:181
28632993432,1cyclictest167950irq/16-i91519:12:031
28631993434,0cyclictest245950irq/16-enp2s0f019:12:160
28631993433,0cyclictest245950irq/16-enp2s0f023:02:060
28631993433,0cyclictest245950irq/16-enp2s0f022:15:180
28631993433,0cyclictest245950irq/16-enp2s0f021:41:240
28631993433,0cyclictest245950irq/16-enp2s0f021:17:530
28631993433,0cyclictest245950irq/16-enp2s0f020:38:260
28631993432,1cyclictest245950irq/16-enp2s0f023:27:050
28631993432,1cyclictest245950irq/16-enp2s0f023:22:380
28631993432,1cyclictest245950irq/16-enp2s0f023:12:500
28631993432,1cyclictest245950irq/16-enp2s0f022:32:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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