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2023-06-07 - 18:21

x86 Intel Xeon E5-2650Lv2 @1700 MHz, Linux 6.1.19-rt8 (Profile)

Latency plot of system in rack #6, 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 -Up99 -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 rack6slot0.osadl.org (updated Wed Jun 07, 2023 13:01:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2424199224211,11cyclictest0-21swapper/210:10:3912
2424199224211,11cyclictest0-21swapper/210:10:3912
2424199224211,11cyclictest0-21swapper/210:10:3812
2425799219207,8cyclictest0-21swapper/1412:26:406
2425799219207,8cyclictest0-21swapper/1412:26:406
2425799219207,8cyclictest0-21swapper/1412:26:406
2425799218207,8cyclictest0-21swapper/1410:08:386
2425799218207,8cyclictest0-21swapper/1410:08:386
24264992091,5cyclictest37198-21cups-browsed11:44:5914
24264992091,5cyclictest37198-21cups-browsed11:44:5914
242649920915,191cyclictest0-21swapper/2109:15:0614
242649920915,191cyclictest0-21swapper/2109:15:0614
242649920915,191cyclictest0-21swapper/2109:15:0614
2427099208187,17cyclictest11186-21CPU19
2427099208187,17cyclictest11186-21CPU19
2427099208187,17cyclictest11186-21CPU19
2426899207197,9cyclictest0-21swapper/2410:32:5417
2426899207197,9cyclictest0-21swapper/2410:32:5417
2426899207197,9cyclictest0-21swapper/2410:32:5417
2424899206198,5cyclictest0-21swapper/811:31:1338
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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