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2019-07-16 - 03:28

Intel(R) Core(TM) i3-2310E CPU @ 2.10GHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #8, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 2 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 --smi -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 20 highest latencies:
System rack8slot2.osadl.org (updated Tue Jul 16, 2019 00:43:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2496599116112,2cyclictest6338-21apt-get22:10:030
2470028839,35sleep10-21swapper/119:09:561
24966998475,8cyclictest0-21swapper/122:10:031
24968998280,1cyclictest0-21swapper/219:10:062
2430928043,24sleep00-21swapper/019:05:170
2469227947,19sleep30-21swapper/319:09:503
2446127944,21sleep20-21swapper/219:07:002
24969995956,1cyclictest6687-21apt-get22:10:033
145622320,1sleep00-21swapper/022:25:150
2496899280,1cyclictest29037-21grep19:15:142
24965992826,1cyclictest0-21swapper/021:25:030
24965992725,1cyclictest0-21swapper/023:35:130
24965992725,1cyclictest0-21swapper/020:15:030
325182260,0sleep00-21swapper/019:25:050
325182260,0sleep00-21swapper/019:25:050
2496899230,1cyclictest0-21swapper/222:20:032
260372200,0sleep10-21swapper/121:40:031
24968991916,1cyclictest0-21swapper/223:20:032
24969991816,1cyclictest0-21swapper/323:45:133
2496699181,15cyclictest0-21swapper/120:30:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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