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2023-02-06 - 14:55

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 20 highest latencies:
System rack6slot8.osadl.org (updated Mon Feb 06, 2023 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251319910211010,9cyclictest6576-21kerneloops10:31:552
251329910191009,8cyclictest6576-21kerneloops10:37:313
251309910181011,5cyclictest6576-21kerneloops08:58:161
251309910181011,5cyclictest6576-21kerneloops07:35:041
251329910171011,5cyclictest6576-21kerneloops07:26:283
251329910161009,5cyclictest6576-21kerneloops07:22:103
251329910161007,7cyclictest6576-21kerneloops08:44:183
251309910161010,5cyclictest6576-21kerneloops09:52:451
251309910161009,6cyclictest6576-21kerneloops09:37:591
251309910161009,5cyclictest6576-21kerneloops10:17:221
251299910161004,10cyclictest6576-21kerneloops10:59:220
251299910161004,10cyclictest6576-21kerneloops10:59:220
251299910151004,9cyclictest6576-21kerneloops10:26:540
251329910141007,5cyclictest6576-21kerneloops10:53:173
251329910141007,5cyclictest6576-21kerneloops08:29:103
251329910141005,7cyclictest6576-21kerneloops09:20:003
251309910141007,5cyclictest6576-21kerneloops07:26:171
251299910141004,8cyclictest6576-21kerneloops09:59:010
251299910141004,8cyclictest6576-21kerneloops08:57:260
251329910131006,6cyclictest6576-21kerneloops09:54:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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