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2021-10-24 - 02:39

Intel(R) Core(TM) i3-8145UE CPU @ 2.20GHz, Linux 5.10.27-rt36 (Profile)

Latency plot of system in rack #e, slot #5
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 rackeslot5.osadl.org (updated Tue Sep 07, 2021 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30518993426,6cyclictest0-21swapper/300:02:453
30518993426,4cyclictest23995-21diskmemload00:16:553
3051899340,33cyclictest0-21swapper/321:55:383
3051899340,1cyclictest0-21swapper/322:48:433
30516993432,1cyclictest100-1kworker/1:1H22:35:181
30518993328,4cyclictest0-21swapper/322:44:243
3051899330,32cyclictest0-21swapper/320:00:293
3051899330,29cyclictest23995-21diskmemload21:11:213
3051799330,32cyclictest0-21swapper/220:45:132
3051799330,32cyclictest0-21swapper/219:35:152
3051799330,0cyclictest0-21swapper/220:05:142
3051699330,32cyclictest21502-21fschecks_count22:30:151
3051299330,32cyclictest5738-21sort00:35:200
3051299330,32cyclictest0-21swapper/020:30:220
30518993229,3cyclictest23995-21diskmemload23:55:003
30518993229,2cyclictest804-21runrttasks22:05:273
30518993229,2cyclictest804-21runrttasks22:05:273
30518993228,4cyclictest23995-21diskmemload22:31:473
30518993228,3cyclictest0-21swapper/322:13:433
30518993227,4cyclictest30897-21ssh23:33:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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