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2021-01-23 - 05:07

Intel(R) Core(TM) i7 CPU X 990 @ 3.47GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #c, slot #1
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 50 highest latencies:
System rackcslot1.osadl.org (updated Sat Jan 23, 2021 00:48:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
948821420,1sleep80-21swapper/800:14:4410
395499990,94rtkit-daemon0-21swapper/319:07:155
586727765,8sleep10-21swapper/119:09:021
560527667,6sleep50-21swapper/519:05:177
292752730,2sleep0634899cyclictest21:25:040
574327162,6sleep110-21swapper/1119:07:113
559727159,8sleep100-21swapper/1019:05:102
75142700,0sleep90-21swapper/921:40:0311
564927061,6sleep40-21swapper/419:05:526
564726960,6sleep20-21swapper/219:05:504
566626757,7sleep80-21swapper/819:06:0810
316152670,0sleep130389-21ssh22:45:141
97162660,0sleep101231ktimersoftd/1023:35:052
587326656,7sleep70-21swapper/719:09:089
586626653,9sleep00-21swapper/019:09:010
578226646,6sleep90-21swapper/919:07:4511
569226253,6sleep60-21swapper/619:06:308
243222620,1sleep10-21swapper/100:33:031
82782570,1sleep30-21swapper/323:32:355
313822570,1sleep40-21swapper/423:21:586
233862490,1sleep90-21swapper/923:13:5111
98462460,1sleep50-21swapper/522:57:207
98462460,1sleep50-21swapper/522:57:207
279322410,1sleep30-21swapper/323:19:325
171332380,1sleep80-21swapper/823:43:1610
250892360,1sleep30-21swapper/322:39:035
640299275,15cyclictest0-21swapper/922:45:0011
640299263,16cyclictest0-21swapper/900:05:0011
263462260,1sleep30-21swapper/323:54:255
636599254,14cyclictest0-21swapper/319:20:025
640299235,13cyclictest0-21swapper/923:55:0011
640299226,12cyclictest0-21swapper/923:05:0011
640299226,12cyclictest0-21swapper/923:05:0011
640299224,13cyclictest0-21swapper/920:45:0011
637099223,14cyclictest0-21swapper/420:15:006
636599224,13cyclictest0-21swapper/300:00:005
637099214,13cyclictest0-21swapper/400:35:016
637099213,13cyclictest0-21swapper/422:20:006
641099200,13cyclictest0-21swapper/1022:57:152
641099200,13cyclictest0-21swapper/1022:57:152
637099203,13cyclictest0-21swapper/419:50:006
636599204,13cyclictest0-21swapper/320:40:005
635299203,12cyclictest0-21swapper/123:20:001
134632200,0sleep60-21swapper/622:25:058
641099193,11cyclictest0-21swapper/1022:20:002
641099193,11cyclictest0-21swapper/1021:45:002
641099190,2cyclictest0-21swapper/1022:08:512
641099190,18cyclictest0-21swapper/1023:56:382
637099194,11cyclictest0-21swapper/419:40:006
636599193,12cyclictest0-21swapper/320:10:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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