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2023-02-06 - 14:21

x86 Intel Core i7-8565U @1800 MHz, Linux 6.0.0-rt11 (Profile)

Latency plot of system in rack #e, slot #0
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 done
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 rackeslot0.osadl.org (updated Mon Feb 06, 2023 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2699994735,12cyclictest0-21swapper/023:37:170
2699993635,1cyclictest13-21ksoftirqd/022:09:330
2703993534,1cyclictest31975-21kworker/4:2+events21:57:374
2701993533,1cyclictest0-21swapper/223:14:212
270099350,35cyclictest672-21cron21:33:011
2699993535,0cyclictest0-21swapper/022:40:150
2699993533,2cyclictest1659-21sshd23:22:480
269999350,35cyclictest15159-21kworker/0:0+events21:57:370
2699993433,1cyclictest23171-21lsb_release21:32:330
2703993332,1cyclictest24483-21kworker/4:0+events22:09:334
2701993332,0cyclictest0-21swapper/222:40:152
2699993331,2cyclictest15361-21lsb_release22:12:210
2699993328,1cyclictest32664-21stat21:46:130
2699993327,2cyclictest8556-21lsb_release00:26:440
2703993231,1cyclictest20712-21kworker/4:0+events23:14:214
270299324,0cyclictest0-21swapper/300:37:103
2701993230,1cyclictest767-21gdbus23:39:542
2699993232,0cyclictest15159-21kworker/0:0+mm_percpu_wq22:01:030
2699993231,1cyclictest0-21swapper/023:55:180
2699993230,2cyclictest26463-21cut23:13:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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