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2023-06-07 - 02:07

x86 Intel Celeron N3350 @1100 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #4
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 26388 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
Characteristics of the 20 highest latencies:
System rack6slot4.osadl.org (updated Tue Jun 06, 2023 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
690499348345,2cyclictest11437-21kworker/1:007:32:571
690399348345,2cyclictest23608-21kworker/0:212:07:370
690499347344,2cyclictest6212-21kworker/1:109:48:401
690399347344,2cyclictest6680-21kworker/0:107:34:400
690399346343,2cyclictest25369-21kworker/0:211:24:430
690399345342,2cyclictest8428-21kworker/0:007:17:490
690399344341,2cyclictest31927-21kworker/0:210:53:500
690499342339,2cyclictest3180-21kworker/1:208:33:091
690499341338,2cyclictest32538-21kworker/1:111:32:531
690499341338,2cyclictest30408-21kworker/1:010:22:191
690499341338,2cyclictest11437-21kworker/1:007:26:161
690499339336,2cyclictest26132-21kworker/1:209:27:431
690499338335,2cyclictest12389-21kworker/1:011:51:171
690499338334,3cyclictest21094-21kworker/1:110:45:531
690399338335,2cyclictest5077-21kworker/0:209:42:080
690399338335,2cyclictest21288-21kworker/0:111:18:200
690499337334,2cyclictest10267-21kworker/1:109:01:361
690499336333,2cyclictest17566-21kworker/1:009:24:181
690399336333,2cyclictest1880-21kworker/0:210:39:090
690399336333,2cyclictest1880-21kworker/0:210:19:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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