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2019-07-22 - 07:34

Intel(R) Core(TM) i7 CPU 980 @ 3.33GHz, Linux 5.0.21-rt16 (Profile)

Latency plot of system in rack #0, slot #7
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 rack0slot7.osadl.org (updated Sun Jul 21, 2019 12:51:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46785187161,7alsa-sink-USBA0-2109:54:322
2628652213861,10sleep20-21swapper/207:09:008
262909199137135,1cyclictest2850510-21kworker/7:211:16:1313
26286752137131,2sleep50-21swapper/507:09:1411
4674981270,57rtkit-daemon0-21swapper/707:07:3913
266863821240,0sleep50-21swapper/507:58:0911
26283462117104,9sleep60-21swapper/607:05:3812
2628599210792,10sleep110-21swapper/1107:08:213
2628464210286,11sleep30-21swapper/307:06:489
2628696210186,9sleep80-21swapper/807:09:2914
262838129682,10sleep10-21swapper/107:05:571
262853629167,19sleep90-21swapper/907:07:4215
27989052820,2sleep711823-21URL09:54:3213
27989052820,2sleep711823-21URL09:54:3213
27190132810,4sleep8262909899cyclictest09:03:3514
27190132810,4sleep8262909899cyclictest09:03:3414
262854028165,11sleep00-21swapper/007:07:450
28171022800,1sleep1084-21ksoftirqd/1011:09:192
28171022800,1sleep1084-21ksoftirqd/1011:09:192
27627302770,0sleep50-21swapper/510:00:0311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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