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2021-09-17 - 22:05

Intel(R) Celeron(R) CPU N3350 @ 1.10GHz, Linux 4.16.15-rt7 (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 26382 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 Fri Sep 17, 2021 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1290199323320,2cyclictest2819-21kworker/0:207:20:120
12902993221,319cyclictest0-21swapper/111:51:291
1290199322319,2cyclictest21516-21kworker/0:008:29:360
1290199322319,2cyclictest18169-21kworker/0:112:11:580
1290199322318,3cyclictest9308-21kworker/0:108:13:420
1290199321319,1cyclictest14497-21kworker/0:011:51:290
1290199321318,2cyclictest31706-21kworker/0:010:59:570
1290199320317,2cyclictest26428-21kworker/0:110:39:030
12902993190,318cyclictest0-21swapper/108:54:231
1290199318315,2cyclictest29761-21kworker/0:108:54:240
1290199318315,2cyclictest10891-21kworker/0:209:43:370
12902993171,315cyclictest0-21swapper/111:21:091
1290199317314,2cyclictest23353-21kworker/0:006:49:110
12902993161,314cyclictest0-21swapper/108:22:221
1290199316314,1cyclictest3998-21kworker/0:011:21:090
1290199316313,2cyclictest23353-21kworker/0:006:39:040
1290199316313,2cyclictest19780-21kworker/0:208:22:210
12902993150,313cyclictest0-21swapper/110:59:551
1290199315313,1cyclictest12635-21kworker/0:109:56:390
1290199315312,2cyclictest9245-21kworker/0:011:31:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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