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2026-06-20 - 01:29

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 Fri Jun 19, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2010421760,5sleep31839099cyclictest07:15:053
1838799986,85cyclictest0-21swapper/010:05:170
26402900,1sleep20-21swapper/212:25:302
325552890,2sleep20-21swapper/210:29:432
18387998726,44cyclictest8050irq/56-dwc_otg_12:30:280
1838799858,36cyclictest0-21swapper/009:25:120
1838799842,62cyclictest25471-21/usr/sbin/munin12:15:310
18387998218,15cyclictest0-21swapper/011:07:480
326612800,2sleep10-21swapper/109:50:331
326612800,2sleep10-21swapper/109:50:331
1838799781,20cyclictest0-21swapper/011:57:490
182712780,3sleep20-21swapper/207:10:052
18387997725,32cyclictest7850irq/56-dwc_otg11:40:050
1838799771,24cyclictest26389-21proc_pri07:30:300
1838799742,27cyclictest0-21swapper/009:30:070
18387997411,14cyclictest25885-21aten_rbpower_po09:00:200
175092740,5sleep01838799cyclictest11:27:140
142722730,2sleep00-21swapper/012:01:000
1838799721,21cyclictest0-21swapper/009:05:260
1838799721,20cyclictest125-21systemd-journal08:02:460
1838799721,16cyclictest0-21swapper/011:16:120
18387997140,18cyclictest9676-21fschecks_count08:15:210
18387997135,20cyclictest0-21swapper/008:45:160
18387997021,2cyclictest0-21swapper/007:55:050
1838799701,22cyclictest7874-21fschecks_count10:00:220
1838799692,24cyclictest0-21swapper/010:25:200
18387996912,5cyclictest17013-21cat10:10:310
18387996912,20cyclictest113212chrt10:41:570
1838799691,16cyclictest0-21swapper/009:16:180
1838799687,15cyclictest0-21swapper/011:54:350
1838799681,5cyclictest6987-21unixbench_singl08:05:330
1838799681,5cyclictest6987-21unixbench_singl08:05:330
1838799681,5cyclictest17308-21grep08:35:250
1838799681,21cyclictest19032-21ssh10:50:330
1838799681,21cyclictest19032-21ssh10:50:330
1838799676,22cyclictest19516-21ssh11:30:180
18387996720,5cyclictest30991-21grep12:20:330
1838799671,34cyclictest0-21swapper/007:55:150
1839099666,22cyclictest0-21swapper/311:25:113
1838799667,14cyclictest0-21swapper/010:46:420
18387996613,3cyclictest0-21swapper/010:22:280
18387996613,3cyclictest0-21swapper/010:22:280
1838799661,20cyclictest0-21swapper/011:45:320
18387996532,16cyclictest7850irq/56-dwc_otg09:40:340
1838799651,20cyclictest4005-21chrt12:27:290
1838799651,17cyclictest0-21swapper/010:30:260
1838799649,12cyclictest23827-21awk07:25:130
1838799641,3cyclictest0-21swapper/012:39:180
1838799641,21cyclictest0-21swapper/012:06:380
1838799641,18cyclictest0-21swapper/010:39:140
1838799641,15cyclictest29187-21diskmemload10:15:490
289252630,2sleep20-21swapper/212:19:142
1838799632,21cyclictest0-21swapper/009:10:530
18387996319,4cyclictest7950irq/56-dwc_otg_11:20:220
1838799631,15cyclictest0-21swapper/010:55:560
1838799626,14cyclictest0-21swapper/009:56:390
18387996220,4cyclictest7850irq/56-dwc_otg07:17:120
18387996220,4cyclictest7850irq/56-dwc_otg07:17:120
18387996216,8cyclictest0-21swapper/009:38:210
1838799611,23cyclictest0-21swapper/011:02:020
18387996112,11cyclictest0-21swapper/008:57:360
154292610,1sleep10-21swapper/110:09:331
1838799605,14cyclictest29187-21diskmemload11:13:250
1838799601,22cyclictest0-21swapper/008:24:330
1838799601,18cyclictest0-21swapper/011:40:260
1838799598,13cyclictest0-21swapper/009:52:550
1838799598,13cyclictest0-21swapper/009:52:550
1838799598,12cyclictest0-21swapper/008:30:220
1838799591,16cyclictest0-21swapper/009:46:340
180812593,48sleep00-21swapper/007:09:440
53162580,2sleep35287-21ssh11:50:333
203692570,2sleep20-21swapper/210:15:182
18390995721,24cyclictest0-21swapper/310:40:183
18387995713,40cyclictest101ktimersoftd/008:40:190
18387995616,3cyclictest7950irq/56-dwc_otg_09:21:530
18387995612,14cyclictest0-21swapper/008:13:430
120292560,22sleep18050irq/56-dwc_otg_09:26:381
1839099553,8cyclictest16077-21ssh10:10:163
18387995534,12cyclictest32175-21unixbench_multi07:45:330
1838899543,8cyclictest7850irq/56-dwc_otg08:50:161
1838799541,40cyclictest23766-21modprobe08:55:040
1838799521,36cyclictest22309-21fschecks_count07:20:220
1838999513,13cyclictest8050irq/56-dwc_otg_10:45:152
1838899514,13cyclictest7850irq/56-dwc_otg07:25:141
1838799512,35cyclictest0-21swapper/007:35:190
1839099505,32cyclictest8050irq/56-dwc_otg_10:35:173
18387994825,5cyclictest7850irq/56-dwc_otg07:15:050
18389994720,5cyclictest7347-21latency_hist10:00:052
1839099466,23cyclictest11834-21ssh10:05:173
1839099462,8cyclictest7850irq/56-dwc_otg08:15:153
1838899464,9cyclictest7850irq/56-dwc_otg08:20:181
18388994621,5cyclictest727-21runrttasks08:35:251
18387994626,5cyclictest7850irq/56-dwc_otg08:25:080
18387994626,5cyclictest7850irq/56-dwc_otg08:25:080
24422450,2sleep30-21swapper/309:54:103
24422450,2sleep30-21swapper/309:54:103
1839099457,25cyclictest0-21swapper/307:20:183
1839099452,2cyclictest0-21swapper/309:25:163
1839099452,12cyclictest8050irq/56-dwc_otg_07:40:173
1838899457,24cyclictest0-21swapper/111:20:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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