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2022-12-02 - 21:39

x86 Intel Celeron M @1500 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, 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 -n -a0 -t1 -p99 -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 rack6slot5.osadl.org (updated Fri Dec 02, 2022 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
835199111315852,5269cyclictest6956-21kworker/0:207:20:550
835199107435360,5369cyclictest6956-21kworker/0:207:38:240
835199104095306,5093cyclictest6956-21kworker/0:208:02:080
835199103235346,4966cyclictest13731-21kworker/0:210:21:320
83519999245229,4680cyclictest6956-21kworker/0:208:59:030
83519998795235,4633cyclictest6956-21kworker/0:208:48:520
83519998175194,4612cyclictest6956-21kworker/0:208:43:220
83519997725180,4581cyclictest29873-21kworker/0:010:26:550
83519996235008,4604cyclictest6187-21kworker/0:210:43:040
83519995815102,4476cyclictest6956-21kworker/0:207:13:250
83519995184961,4553cyclictest24731-21kworker/0:109:19:010
83519993824793,4578cyclictest13731-21kworker/0:210:11:040
83519993684786,4571cyclictest30072-21kworker/0:111:32:230
83519992644783,4429cyclictest6956-21kworker/0:207:55:360
83519992474714,4518cyclictest6956-21kworker/0:208:12:270
83519991124632,4469cyclictest21266-21kworker/0:211:09:540
83519990714636,4424cyclictest6956-21kworker/0:208:32:420
83519990644649,4404cyclictest6956-21kworker/0:208:17:040
83519990474734,4302cyclictest7615-21kworker/0:112:02:000
83519990344622,4401cyclictest7297-21kworker/0:009:50:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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