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2019-07-24 - 00:14

Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz, Linux 5.2.0-rt1 (Profile)

Latency plot of system in rack #0, slot #8
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot8.osadl.org (updated Tue Jul 23, 2019 12:50:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
227045461448,4alsa-sink-ALC660-21swapper/007:08:160
48792460452,4sleep40-21swapper/407:07:3010
47682395388,4sleep60-21swapper/607:05:5612
48662393386,4sleep80-21swapper/807:07:1914
49522392385,4sleep10-21swapper/107:08:321
30932384377,4sleep50-21swapper/507:05:0811
47432380373,4sleep30-21swapper/307:05:379
49162375368,4sleep20-21swapper/207:08:008
40262374367,4sleep150-21swapper/1507:05:177
49412372365,3sleep90-21swapper/907:08:2315
50172369361,4sleep70-21swapper/707:09:2513
50422368358,6sleep140-21swapper/1407:09:496
48312364357,4sleep120-21swapper/1207:06:504
48522361354,4sleep110-21swapper/1107:07:063
47752331323,4sleep130-21swapper/1307:06:035
49072263257,3sleep100-21swapper/1007:07:522
5425995410,16cyclictest32142-21Web03:27:508
70202490,0sleep10-21swapper/108:20:051
73122460,0sleep130-21swapper/1310:05:295
5440994210,12cyclictest32142-21Web03:27:505
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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