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2023-02-02 - 09:25

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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack1slot8.osadl.org (updated Thu Feb 02, 2023 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63682939917,15sleep10-21swapper/119:09:251
647199889828,44cyclictest0-21swapper/119:19:311
647099796737,48cyclictest0-21swapper/019:19:300
6470994316,15cyclictest0-21swapper/019:10:010
211999910,4rtkit-daemon2118-21rtkit-daemon20:05:000
211999890,5rtkit-daemon2118-21rtkit-daemon22:30:391
211999870,4rtkit-daemon2118-21rtkit-daemon23:32:590
211999870,4rtkit-daemon2118-21rtkit-daemon00:38:210
647099866,67cyclictest0-21swapper/019:10:170
211999860,4rtkit-daemon2118-21rtkit-daemon23:07:490
211999860,4rtkit-daemon2118-21rtkit-daemon22:40:040
211999860,4rtkit-daemon2118-21rtkit-daemon22:40:030
241892850,3sleep124190-21sh23:15:221
211999850,5rtkit-daemon2118-21rtkit-daemon22:27:180
211999850,4rtkit-daemon2118-21rtkit-daemon22:45:440
211999850,4rtkit-daemon2118-21rtkit-daemon22:12:380
211999840,4rtkit-daemon2118-21rtkit-daemon21:17:410
211999840,4rtkit-daemon2118-21rtkit-daemon00:04:510
647099835,59cyclictest0-21swapper/020:10:010
211999830,4rtkit-daemon2118-21rtkit-daemon21:11:170
211999830,4rtkit-daemon2118-21rtkit-daemon21:01:270
211999830,4rtkit-daemon2118-21rtkit-daemon20:06:060
647099823,51cyclictest23777-21munin-node23:15:240
211999820,5rtkit-daemon2118-21rtkit-daemon00:07:150
211999820,4rtkit-daemon2118-21rtkit-daemon22:59:040
211999820,11rtkit-daemon0-21swapper/021:06:011
647099815,59cyclictest0-21swapper/019:50:020
211999810,5rtkit-daemon2118-21rtkit-daemon21:43:120
211999810,4rtkit-daemon2118-21rtkit-daemon22:50:330
211999810,4rtkit-daemon2118-21rtkit-daemon22:06:170
211999810,4rtkit-daemon2118-21rtkit-daemon00:29:560
211999810,4rtkit-daemon2118-21rtkit-daemon00:14:360
211999810,4rtkit-daemon2118-21rtkit-daemon00:14:350
647099806,62cyclictest0-21swapper/020:50:240
211999800,5rtkit-daemon2118-21rtkit-daemon21:36:120
211999800,5rtkit-daemon2118-21rtkit-daemon21:36:110
211999800,5rtkit-daemon2118-21rtkit-daemon20:46:460
211999800,4rtkit-daemon2118-21rtkit-daemon21:59:080
211999800,4rtkit-daemon2118-21rtkit-daemon19:56:310
211999800,4rtkit-daemon2118-21rtkit-daemon19:37:500
211999790,4rtkit-daemon2118-21rtkit-daemon00:31:050
211999790,4rtkit-daemon2118-21rtkit-daemon00:19:510
647099786,65cyclictest0-21swapper/020:15:260
647099785,66cyclictest0-21swapper/022:20:140
211999780,5rtkit-daemon2118-21rtkit-daemon22:31:390
211999780,4rtkit-daemon2118-21rtkit-daemon21:52:320
211999780,4rtkit-daemon2118-21rtkit-daemon20:43:060
211999780,4rtkit-daemon2118-21rtkit-daemon20:43:050
211999780,4rtkit-daemon2118-21rtkit-daemon20:39:160
211999780,4rtkit-daemon2118-21rtkit-daemon20:39:150
211999780,4rtkit-daemon2118-21rtkit-daemon19:52:450
211999770,4rtkit-daemon2118-21rtkit-daemon23:41:340
211999770,4rtkit-daemon2118-21rtkit-daemon20:24:000
211999770,4rtkit-daemon2118-21rtkit-daemon19:24:490
211999770,4rtkit-daemon2118-21rtkit-daemon00:22:150
647099763,43cyclictest20344-21ssh22:15:030
211999760,4rtkit-daemon2118-21rtkit-daemon23:53:440
211999760,4rtkit-daemon2118-21rtkit-daemon23:47:300
211999760,4rtkit-daemon2118-21rtkit-daemon23:13:090
211999760,4rtkit-daemon2118-21rtkit-daemon23:03:180
211999760,4rtkit-daemon2118-21rtkit-daemon22:38:130
211999760,4rtkit-daemon2118-21rtkit-daemon21:25:360
211999760,4rtkit-daemon2118-21rtkit-daemon21:20:470
211999760,4rtkit-daemon2118-21rtkit-daemon19:32:200
647099753,64cyclictest11931-21munin-node22:00:200
211999750,4rtkit-daemon2118-21rtkit-daemon20:55:060
211999750,3rtkit-daemon2118-21rtkit-daemon21:25:011
211999750,3rtkit-daemon12203-21ssh23:50:101
211999740,4rtkit-daemon2118-21rtkit-daemon21:07:210
211999740,4rtkit-daemon2118-21rtkit-daemon20:29:310
211999740,4rtkit-daemon2118-21rtkit-daemon19:25:450
211999730,4rtkit-daemon2118-21rtkit-daemon23:36:550
211999730,4rtkit-daemon2118-21rtkit-daemon21:47:230
211999720,4rtkit-daemon2118-21rtkit-daemon20:30:350
211999720,4rtkit-daemon2118-21rtkit-daemon19:40:350
647099702,8cyclictest2157-17sedispatch23:30:010
211999700,4rtkit-daemon2118-21rtkit-daemon23:23:140
211999690,4rtkit-daemon13941-21diskmemload21:57:521
647099686,56cyclictest13941-21diskmemload23:55:010
6470996812,50cyclictest79450irq/46-eth0-tx-21:33:210
211999650,4rtkit-daemon2118-21rtkit-daemon22:03:331
211999650,3rtkit-daemon18702-21ssh22:10:581
287982644,13sleep10-21swapper/100:16:511
211999610,12rtkit-daemon0-21swapper/023:22:201
647199585,44cyclictest0-21swapper/121:48:131
45672584,15sleep10-21swapper/122:41:591
45672584,15sleep10-21swapper/122:41:581
211999580,5rtkit-daemon2118-21rtkit-daemon21:20:271
647199575,45cyclictest0-21swapper/123:41:051
189122574,13sleep10-21swapper/100:00:311
76042565,10sleep10-21swapper/121:53:081
647199564,46cyclictest0-21swapper/121:34:291
211999560,3rtkit-daemon25690-21sed20:05:311
156272564,12sleep10-21swapper/121:11:491
647199554,45cyclictest0-21swapper/123:36:291
647199554,44cyclictest0-21swapper/120:56:491
41362554,12sleep10-21swapper/120:40:081
41362554,12sleep10-21swapper/120:40:071
211999550,3rtkit-daemon17556-21ssh23:58:551
210842554,12sleep10-21swapper/119:52:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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