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2024-04-25 - 11:19
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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 rackeslot2.osadl.org (updated Thu Apr 25, 2024 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25699902430,2sleep30-21swapper/323:55:263
2358491290,7ptp4l164790irq/127-enp1s0-TxRx-021:20:093
2174771992622,3cyclictest1464-21dbus-daemon20:05:011
2358491250,4ptp4l164790irq/127-enp1s0-TxRx-023:24:163
2358491250,4ptp4l164790irq/127-enp1s0-TxRx-022:16:343
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-022:46:443
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-022:36:423
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-022:05:083
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-020:45:243
2358491240,4ptp4l164790irq/127-enp1s0-TxRx-023:49:303
2358491240,4ptp4l164790irq/127-enp1s0-TxRx-023:35:543
2358491240,4ptp4l164790irq/127-enp1s0-TxRx-022:50:053
2358491240,4ptp4l164790irq/127-enp1s0-TxRx-022:24:003
262715522319,2sleep20-21swapper/200:32:052
245864522319,2sleep20-21swapper/222:45:522
245148022319,2sleep20-21swapper/222:42:592
238907422319,2sleep20-21swapper/222:05:042
2358491230,5ptp4l164790irq/127-enp1s0-TxRx-023:52:583
2358491230,5ptp4l164790irq/127-enp1s0-TxRx-022:30:063
2358491230,5ptp4l164790irq/127-enp1s0-TxRx-022:25:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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