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2026-08-15 - 05:18

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 highest latencies:
System rack7slot3s.osadl.org (updated Sat Aug 15, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
82239912723,79cyclictest0-21swapper/021:20:210
82239912527,72cyclictest26210-21missed_timers23:15:250
82239911328,54cyclictest14717-21pluginstate23:40:300
8225991112,27cyclictest26270-21chrt23:15:262
8223991034,9cyclictest0-21swapper/022:07:500
8223991034,9cyclictest0-21swapper/022:07:500
82239910234,61cyclictest6359-21ssh00:10:100
8223991014,80cyclictest12230-21fschecks_time21:40:230
82239910114,47cyclictest0-21swapper/000:15:260
82239910032,45cyclictest16753-21ssh21:45:290
8223999720,61cyclictest13786-21unixbench_singl22:20:320
166112960,3sleep123-21ksoftirqd/123:43:101
822599943,24cyclictest0-21swapper/221:40:222
130962920,4sleep113098-21grep21:40:361
8223999016,50cyclictest10241-21grep20:45:180
8223998917,51cyclictest25251-21apt23:15:050
8223998916,49cyclictest19493-21missed_timers00:25:270
822399887,66cyclictest0-21swapper/023:45:100
8223998720,54cyclictest21201-21threads21:50:320
8223998555,15cyclictest0-21swapper/022:00:190
8226998329,35cyclictest6122-21kworker/3:223:15:243
822399836,42cyclictest0-21swapper/021:25:170
8223998318,49cyclictest0-21swapper/023:50:160
8223998313,55cyclictest614850ssh22:50:330
47152810,6sleep1822499cyclictest23:29:131
125462810,2sleep00-21swapper/023:38:260
822399786,57cyclictest30135-21rm00:38:470
8223997815,49cyclictest0-21swapper/021:39:310
8223997811,43cyclictest489-21modprobe22:45:050
291882780,2sleep20-21swapper/200:37:022
8225997714,43cyclictest9320-21kworker/u8:300:10:112
822499774,37cyclictest28070-21entropy21:20:211
822399779,56cyclictest0-21swapper/020:21:080
822399779,53cyclictest140-21systemd-journal21:01:280
8223997618,42cyclictest8048-21awk22:15:040
8223997617,43cyclictest14345-21cat23:00:330
8223997615,41cyclictest0-21swapper/022:15:210
6582760,2sleep20-21swapper/223:24:232
8223997512,43cyclictest28149-21aten_rbpower_en20:05:190
19692740,1sleep20-21swapper/222:45:302
8223997316,34cyclictest3383-21sort20:25:240
8223997315,45cyclictest26033-21ssh00:33:470
8223997314,44cyclictest22192-21seq19:46:590
822499724,32cyclictest0-21swapper/123:15:261
822399729,49cyclictest0-21swapper/022:39:380
8223997218,44cyclictest23731-21basename21:15:190
8223997215,46cyclictest30773-21timerandwakeup23:20:310
8223997214,43cyclictest26127-21ls20:00:050
8223997214,42cyclictest19387-21ssh23:06:540
52102720,1sleep20-21swapper/221:31:022
8223997137,5cyclictest0-21swapper/021:05:170
8223997117,11cyclictest31031-21/usr/sbin/munin20:10:330
822599703,47cyclictest11325-21ssh00:15:272
8223997020,28cyclictest8734-21rm23:34:010
8223997011,45cyclictest0-21swapper/021:55:310
8226996932,14cyclictest7850irq/56-dwc_otg_21:45:283
8223996914,42cyclictest26526-21/usr/sbin/munin20:00:230
8223996914,42cyclictest26526-21/usr/sbin/munin20:00:230
8223996912,41cyclictest0-21swapper/023:58:440
8223996813,39cyclictest22650-21ssh22:31:250
8223996812,41cyclictest0-21swapper/000:20:190
8223996810,48cyclictest0-21swapper/019:52:110
8223996810,44cyclictest0-21swapper/023:28:350
8225996720,31cyclictest0-21swapper/221:20:222
8223996718,35cyclictest32048-21ssh00:01:060
8223996717,36cyclictest1708-21/usr/sbin/munin22:45:280
8223996713,41cyclictest0-21swapper/021:30:250
8223996710,49cyclictest10636-21rm22:56:000
8225996615,31cyclictest0-21swapper/221:45:332
8223996630,5cyclictest0-21swapper/020:30:140
8223996614,42cyclictest7817-21taskset20:37:130
8223996612,38cyclictest11319-21runrttasks19:16:320
8223996612,38cyclictest11319-21runrttasks19:16:320
8223996611,42cyclictest16946-21seq19:34:070
8226996513,20cyclictest7850irq/56-dwc_otg_00:15:273
8223996524,24cyclictest0-21swapper/019:10:070
8223996512,38cyclictest21720-21ssh21:12:140
8223996512,37cyclictest0-21swapper/000:06:290
8223996511,41cyclictest0-21swapper/020:40:120
8223996511,41cyclictest0-21swapper/020:40:120
822699646,36cyclictest7950irq/56-dwc_otg_23:40:293
822399649,36cyclictest0-21swapper/019:24:120
822699638,36cyclictest7750irq/56-dwc_otg00:10:113
822399638,35cyclictest19705-21ssh22:28:460
199382630,2sleep10-21swapper/121:50:061
822699626,36cyclictest7950irq/56-dwc_otg_21:40:213
822699625,22cyclictest39-21ksoftirqd/321:20:223
8223996211,40cyclictest13211-21taskset20:50:390
822499603,29cyclictest0-21swapper/100:15:301
822399609,40cyclictest0-21swapper/020:56:040
8224995914,26cyclictest7950irq/56-dwc_otg_00:10:111
8223995911,32cyclictest20578-21chrt19:44:290
8223995818,26cyclictest473-21runrttasks20:16:130
8223995811,35cyclictest0-21swapper/019:35:190
193572570,2sleep20-21swapper/222:28:072
285272550,2sleep20-21swapper/220:05:242
8224995322,7cyclictest7950irq/56-dwc_otg_23:20:161
8223995313,28cyclictest0-21swapper/019:29:010
8226995217,7cyclictest0-21swapper/323:20:173
822599514,31cyclictest0-21swapper/223:40:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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