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2023-02-01 - 14:22

x86 Intel Atom x6425E @2000 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #e, slot #3
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
Characteristics of the 20 highest latencies:
System rackeslot3 (updated Wed Feb 01, 2023 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1339397997042,27cyclictest1423878-21kworker/2:122:35:182
1339397997035,29cyclictest1347949-21kworker/2:119:55:162
1339397996736,29cyclictest1379271-21kworker/2:321:35:012
1339397996736,29cyclictest1379271-21kworker/2:321:35:002
1339397996637,28cyclictest1368214-21kworker/2:120:50:172
1339397996636,29cyclictest1340988-21kworker/2:319:35:002
1339397996537,26cyclictest1517800-21kworker/2:000:20:182
1339397996443,19cyclictest3467053-1kworker/2:2H21:07:082
1339397996338,23cyclictest3467053-1kworker/2:2H20:25:002
1339397996334,27cyclictest3467053-1kworker/2:2H20:10:182
1339397996331,30cyclictest1340988-21kworker/2:319:25:172
1339397996235,26cyclictest1459474-21kworker/2:223:00:222
1339397996158,1cyclictest0-21swapper/200:25:162
1339397996133,26cyclictest3467053-1kworker/2:2H00:32:462
1339397996032,27cyclictest1423878-21kworker/2:122:10:012
1339397995955,3cyclictest0-21swapper/221:36:452
1339397995934,24cyclictest1517800-21kworker/2:000:10:192
1339397995932,26cyclictest1340988-21kworker/2:319:20:172
1339397995931,27cyclictest1356070-21kworker/2:220:15:162
133939799591,57cyclictest0-21swapper/221:47:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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