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2023-06-06 - 12:05

x86 Intel Core i3-2350M @2300 MHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #6, slot #8
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 10 highest latencies:
System rack6slot8.osadl.org (updated Tue Jun 06, 2023 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197549910341025,7cyclictest6576-21kerneloops00:11:301
197569910271021,5cyclictest6576-21kerneloops20:08:083
197569910271019,6cyclictest6576-21kerneloops00:02:533
197549910271020,5cyclictest6576-21kerneloops00:23:271
197569910261019,5cyclictest6576-21kerneloops21:15:113
197549910261018,6cyclictest6576-21kerneloops22:13:201
197549910261018,6cyclictest6576-21kerneloops00:35:331
197549910261018,6cyclictest6576-21kerneloops00:35:331
197569910251019,5cyclictest6576-21kerneloops23:46:593
197569910251019,5cyclictest6576-21kerneloops20:19:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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