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2023-06-09 - 14:10

x86 Intel Core i3-8145UE @2200 MHz, Linux 5.10.27-rt36 (Profile)

Latency plot of system in rack #e, 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 -Sp99 -i200 -h400 -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 rackeslot5.osadl.org (updated Fri Jun 09, 2023 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
494299320,31cyclictest24957-21awk22:40:233
4942993130,1cyclictest0-21swapper/321:16:503
494299310,2cyclictest28662-21diskmemload21:35:293
493999310,31cyclictest0-21swapper/223:21:112
493799310,30cyclictest211rcuc/100:40:011
493699310,30cyclictest28277-21grep21:40:190
493699310,30cyclictest21675-21hddtemp_smartct22:05:220
4942993028,1cyclictest0-21swapper/321:05:183
4942993028,1cyclictest0-21swapper/300:10:223
494299300,29cyclictest8530-21/usr/sbin/munin22:55:273
494299300,29cyclictest6532-21munin-run22:55:003
494299300,29cyclictest28662-21diskmemload23:30:123
494299300,29cyclictest28662-21diskmemload23:23:113
494299300,29cyclictest28662-21diskmemload22:45:463
494299300,29cyclictest28662-21diskmemload22:27:183
494299300,29cyclictest28662-21diskmemload22:08:213
494299300,29cyclictest28662-21diskmemload21:55:153
494299300,29cyclictest15075-21munin-run00:40:023
494299300,29cyclictest0-21swapper/323:29:083
494299300,29cyclictest0-21swapper/300:05:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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