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2021-09-27 - 05:14

Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz, Linux 3.18.69-rt75 (Profile)

Latency plot of system in rack #8, 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
Characteristics of the 20 highest latencies:
System rack8slot5.osadl.org (updated Mon Sep 27, 2021 00:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
340928968,8sleep40-21swapper/415:39:234
342528867,8sleep50-21swapper/515:39:325
339828767,7sleep60-21swapper/615:39:176
129926858,7sleep20-21swapper/215:37:452
129526040,7sleep70-21swapper/715:37:427
363825938,8sleep10-21swapper/115:42:331
333125940,16sleep30-21swapper/315:38:343
363725444,7sleep00-21swapper/015:42:320
380099160,15cyclictest0-21swapper/618:42:466
379099160,15cyclictest0-21swapper/520:17:435
379099160,15cyclictest0-21swapper/520:12:425
377499160,15cyclictest0-21swapper/320:52:413
380899140,13cyclictest0-21swapper/720:52:407
380899140,13cyclictest0-21swapper/720:12:427
379099140,13cyclictest0-21swapper/518:02:395
377499140,13cyclictest0-21swapper/318:17:463
377499140,13cyclictest0-21swapper/317:02:303
376799140,13cyclictest0-21swapper/119:02:391
380899130,12cyclictest0-21swapper/716:57:487
380099130,12cyclictest0-21swapper/617:22:516
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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