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2023-06-06 - 04:16

x86 Intel Atom Z530 @1600 MHz, 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 Tue Jun 06, 2023 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197002615594,15sleep00-21swapper/019:09:340
19776994994,429cyclictest0-21swapper/019:30:240
1977699495417,53cyclictest0-21swapper/019:10:100
1977799442382,53cyclictest0-21swapper/119:30:251
1977799440360,50cyclictest0-21swapper/119:10:101
195742269250,13sleep10-21swapper/119:08:231
2119991310,36rtkit-daemon5757-21diskmemload23:14:410
211999880,4rtkit-daemon2118-21rtkit-daemon22:46:000
73502870,5sleep17349-21ssh22:23:311
211999820,4rtkit-daemon2118-21rtkit-daemon21:50:051
19776998222,51cyclictest0-21swapper/021:49:140
211999770,4rtkit-daemon2118-21rtkit-daemon23:11:451
211999770,38rtkit-daemon2118-21rtkit-daemon21:20:491
211999770,38rtkit-daemon2118-21rtkit-daemon21:20:481
211999770,3rtkit-daemon2118-21rtkit-daemon22:56:501
211999760,4rtkit-daemon2118-21rtkit-daemon21:41:240
211999760,4rtkit-daemon2118-21rtkit-daemon21:31:191
211999740,4rtkit-daemon2118-21rtkit-daemon22:12:050
211999740,3rtkit-daemon2118-21rtkit-daemon20:34:271
211999730,4rtkit-daemon2118-21rtkit-daemon23:37:560
211999730,4rtkit-daemon2118-21rtkit-daemon23:09:100
211999730,4rtkit-daemon2118-21rtkit-daemon20:27:220
211999730,4rtkit-daemon2118-21rtkit-daemon20:15:120
211999730,4rtkit-daemon2118-21rtkit-daemon19:56:271
211999730,4rtkit-daemon2118-21rtkit-daemon19:49:370
211999730,4rtkit-daemon2118-21rtkit-daemon00:17:231
211999730,32rtkit-daemon2118-21rtkit-daemon22:44:251
211999730,3rtkit-daemon2118-21rtkit-daemon23:49:471
211999720,9rtkit-daemon0-21swapper/023:50:560
211999720,4rtkit-daemon2118-21rtkit-daemon22:35:140
211999720,4rtkit-daemon2118-21rtkit-daemon22:07:190
211999720,4rtkit-daemon2118-21rtkit-daemon22:02:400
211999720,4rtkit-daemon2118-21rtkit-daemon21:46:381
211999720,4rtkit-daemon2118-21rtkit-daemon20:58:531
211999720,4rtkit-daemon2118-21rtkit-daemon20:14:070
211999720,4rtkit-daemon2118-21rtkit-daemon20:08:221
211999720,4rtkit-daemon2118-21rtkit-daemon20:03:331
211999720,4rtkit-daemon2118-21rtkit-daemon19:46:121
211999720,4rtkit-daemon2118-21rtkit-daemon19:17:170
211999720,3rtkit-daemon2118-21rtkit-daemon22:16:391
211999720,19rtkit-daemon0-21swapper/020:45:370
211999710,4rtkit-daemon2118-21rtkit-daemon23:15:450
211999710,4rtkit-daemon2118-21rtkit-daemon21:54:000
211999710,4rtkit-daemon2118-21rtkit-daemon20:55:020
211999710,4rtkit-daemon2118-21rtkit-daemon20:36:520
211999710,4rtkit-daemon2118-21rtkit-daemon19:50:581
211999710,4rtkit-daemon2118-21rtkit-daemon19:43:281
211999710,4rtkit-daemon2118-21rtkit-daemon19:27:020
211999710,4rtkit-daemon2118-21rtkit-daemon00:25:121
211999710,3rtkit-daemon2118-21rtkit-daemon23:59:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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