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2024-05-28 - 06:50
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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 Tue May 28, 2024 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
104816021090,2sleep30-21swapper/321:20:143
11010722870,2sleep11101077-21unixbench_multi21:50:351
13127512720,2sleep30-21swapper/300:05:233
2358491350,4ptp4l0-21swapper/300:30:103
10919392320,2sleep30-21swapper/321:45:273
8974582300,2chrt0-21swapper/019:10:210
12319982270,2sleep20-21swapper/223:15:162
2358491260,6ptp4l164790irq/127-enp1s0-TxRx-021:52:583
2358491250,5ptp4l164790irq/127-enp1s0-TxRx-022:30:013
2358491250,5ptp4l164790irq/127-enp1s0-TxRx-022:04:393
2358491250,5ptp4l164790irq/127-enp1s0-TxRx-021:16:493
2358491250,4ptp4l164790irq/127-enp1s0-TxRx-022:09:133
2358491250,4ptp4l164790irq/127-enp1s0-TxRx-000:25:403
2358491250,4ptp4l164790irq/127-enp1s0-TxRx-000:22:483
895542992421,2cyclictest939106-21grep19:50:011
2358491240,6ptp4l164790irq/127-enp1s0-TxRx-023:00:113
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-023:30:213
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-023:27:283
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-023:10:403
2358491240,5ptp4l164790irq/127-enp1s0-TxRx-023:05:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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