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2022-01-26 - 11:46

Intel(R) Atom(TM) CPU Z530 @ 1.60GHz, Linux 3.12.61-rt81 (Profile)

Latency plot of system in rack #1, 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 -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 50 highest latencies:
System rack1slot8.osadl.org (updated Wed Jan 26, 2022 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
125869920301969,54cyclictest0-21swapper/019:40:090
12587995445,13cyclictest0-21swapper/119:10:101
1258799513441,56cyclictest22657-21devkit-disks-da19:40:101
1258699467419,11cyclictest22657-21devkit-disks-da19:10:090
2119991150,4rtkit-daemon2118-21rtkit-daemon21:51:051
2119991060,4rtkit-daemon2118-21rtkit-daemon00:20:171
3173221030,4sleep031731-21ssh23:15:170
211999930,13rtkit-daemon0-21swapper/020:05:530
211999910,4rtkit-daemon2118-21rtkit-daemon22:26:450
31852900,3sleep0221rcuc/023:20:290
31852900,3sleep0221rcuc/023:20:280
1240828637,36sleep00-21swapper/019:08:390
211999840,4rtkit-daemon2118-21rtkit-daemon23:09:111
211999830,5rtkit-daemon2118-21rtkit-daemon21:28:390
211999820,4rtkit-daemon2118-21rtkit-daemon22:11:500
211999810,5rtkit-daemon2118-21rtkit-daemon00:07:181
211999780,12rtkit-daemon0-21swapper/000:39:030
211999760,5rtkit-daemon2118-21rtkit-daemon23:47:110
211999760,4rtkit-daemon2118-21rtkit-daemon22:53:261
211999760,4rtkit-daemon2118-21rtkit-daemon22:46:160
211999750,4rtkit-daemon2118-21rtkit-daemon22:35:160
251122740,14sleep00-21swapper/021:17:360
211999740,4rtkit-daemon2118-21rtkit-daemon23:32:421
211999740,4rtkit-daemon2118-21rtkit-daemon23:01:061
211999740,4rtkit-daemon2118-21rtkit-daemon22:08:050
211999740,4rtkit-daemon2118-21rtkit-daemon20:50:381
211999740,4rtkit-daemon2118-21rtkit-daemon19:49:330
211999740,4rtkit-daemon2118-21rtkit-daemon00:25:030
1104427433,29sleep10-21swapper/119:05:081
28362730,4chrt2837-21timerandwakeup20:15:301
211999730,4rtkit-daemon2118-21rtkit-daemon23:13:161
211999730,4rtkit-daemon2118-21rtkit-daemon22:44:060
211999730,4rtkit-daemon2118-21rtkit-daemon21:10:040
211999730,4rtkit-daemon2118-21rtkit-daemon19:32:270
211999730,4rtkit-daemon2118-21rtkit-daemon19:19:121
211999730,4rtkit-daemon2118-21rtkit-daemon00:02:280
211999720,4rtkit-daemon2118-21rtkit-daemon22:15:351
211999720,4rtkit-daemon2118-21rtkit-daemon21:35:141
211999720,4rtkit-daemon2118-21rtkit-daemon21:30:281
211999720,4rtkit-daemon2118-21rtkit-daemon20:49:270
211999710,4rtkit-daemon2118-21rtkit-daemon22:02:100
211999710,4rtkit-daemon2118-21rtkit-daemon22:00:201
211999710,4rtkit-daemon2118-21rtkit-daemon21:37:590
211999710,4rtkit-daemon2118-21rtkit-daemon21:16:291
211999710,4rtkit-daemon2118-21rtkit-daemon21:07:030
211999710,4rtkit-daemon2118-21rtkit-daemon21:01:240
211999710,4rtkit-daemon2118-21rtkit-daemon20:51:280
211999710,4rtkit-daemon2118-21rtkit-daemon20:38:270
211999710,4rtkit-daemon2118-21rtkit-daemon20:26:380
211999710,4rtkit-daemon2118-21rtkit-daemon20:21:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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