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2019-07-24 - 00:13

Intel(R) Core(TM) i7-4960X CPU @ 3.60GHz, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #0, 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 rack0slot3.osadl.org (updated Tue Jul 23, 2019 12:49:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
343751170,85alsa-sink-ALC880-21swapper/707:09:519
3437511566,35alsa-sink-ALC880-21swapper/107:06:061
343751090,55alsa-sink-ALC880-21swapper/007:07:470
343751070,44alsa-sink-ALC880-21swapper/607:08:478
1842-21650,3Xorg0-21swapper/112:02:251
34375470,22alsa-sink-ALC880-21swapper/110:08:371
34375462,28alsa-sink-ALC880-21swapper/910:31:2411
34375451,22alsa-sink-ALC880-21swapper/711:24:209
943499442,27cyclictest0-21swapper/012:08:410
34375440,22alsa-sink-ALC880-21swapper/610:39:018
34375432,2alsa-sink-ALC880-21swapper/512:36:197
34375432,2alsa-sink-ALC880-21swapper/411:23:326
34375431,28alsa-sink-ALC880-21swapper/409:22:506
34375430,25alsa-sink-ALC880-21swapper/409:57:016
34375430,23alsa-sink-ALC880-21swapper/709:38:439
943499422,32cyclictest0-21swapper/012:15:280
943499422,24cyclictest0-21swapper/012:29:510
34375425,23alsa-sink-ALC880-21swapper/512:04:327
34375422,30alsa-sink-ALC880-21swapper/911:42:5311
34375422,21alsa-sink-ALC880-21swapper/912:18:2611
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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