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2022-01-23 - 11:11

Intel(R) Celeron(R) CPU G1620 @ 2.70GHz, Linux 5.4.17-rt9 (Profile)

Latency plot of system in rack #9, 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
Compare latency of primary with shadow system
Characteristics of the 10 highest latencies:
System rack9slot5.osadl.org (updated Sun Jan 23, 2022 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139562500,1sleep013952-21x2golistsession23:17:110
76292430,0sleep10-21swapper/120:50:191
170572410,0sleep10-21swapper/122:32:151
207482400,0sleep10-21swapper/118:59:161
765422315,4sleep10-21swapper/118:41:021
264599170,1rtkit-daemon2644-21rtkit-daemon21:50:211
250382160,0sleep00-21swapper/023:24:390
83952157,4sleep00-21swapper/018:43:090
264599150,1rtkit-daemon2644-21rtkit-daemon22:32:430
264599150,1rtkit-daemon2644-21rtkit-daemon21:41:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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