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2021-09-27 - 06:52

Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz, Linux 4.19.1-rt3 (Profile)

Latency plot of system in rack #6, 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 rack6slot3.osadl.org (updated Mon Sep 27, 2021 00:46:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1138427339,0sleep50-21swapper/519:05:275
1144827036,0sleep40-21swapper/419:06:224
1164925741,0sleep30-21swapper/319:09:103
1146225741,0sleep60-21swapper/619:06:326
1163825519,0sleep10-21swapper/119:09:001
1149225236,0sleep70-21swapper/719:06:577
1139025234,0sleep20-21swapper/219:05:322
1145625033,0sleep00-21swapper/019:06:260
551330,0ktimersoftd/50-21swapper/522:50:185
471330,0ktimersoftd/40-21swapper/421:35:504
391330,0ktimersoftd/30-21swapper/323:28:033
391330,0ktimersoftd/30-21swapper/323:11:493
391330,0ktimersoftd/30-21swapper/322:06:073
711320,0ktimersoftd/70-21swapper/723:46:567
711320,0ktimersoftd/70-21swapper/722:06:077
711320,0ktimersoftd/70-21swapper/721:35:507
711320,0ktimersoftd/70-21swapper/720:12:507
711320,0ktimersoftd/70-21swapper/700:25:587
631320,0ktimersoftd/60-21swapper/621:40:026
551320,0ktimersoftd/50-21swapper/523:53:425
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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