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2026-07-14 - 02:57

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 50 highest latencies:
System rack7slot3s.osadl.org (updated Tue Jul 14, 2026 00:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1535521650,5sleep2168299cyclictest21:12:532
2178921060,5sleep0168099cyclictest00:35:140
16809910535,53cyclictest0-21swapper/022:05:310
16809910535,53cyclictest0-21swapper/022:05:310
16809910435,44cyclictest14369-21sshd19:45:300
168099996,79cyclictest12375-21diskmemload22:10:310
1680999920,30cyclictest0-21swapper/000:05:330
168199982,31cyclictest29205-21fschecks_count23:25:371
1680999718,54cyclictest0-21swapper/023:55:290
1680999522,58cyclictest27881-21apt22:45:170
257222920,5sleep3168599cyclictest22:02:503
168199923,24cyclictest27472-21ssh22:05:291
168199923,24cyclictest27472-21ssh22:05:291
1680999120,65cyclictest0-21swapper/023:25:350
1680999016,61cyclictest16536-21wget23:10:310
1680998635,25cyclictest4552-21unixbench_multi22:15:470
1680998622,25cyclictest0-21swapper/020:25:310
1680998614,55cyclictest0-21swapper/019:36:470
1682998425,12cyclictest4563-21grep22:15:472
168099846,24cyclictest20638-21ssh23:15:310
1680998421,13cyclictest12359-21cron21:10:170
1680998313,51cyclictest0-21swapper/020:20:400
1680998015,54cyclictest1622-21latency_hist21:35:180
1680998014,49cyclictest10932-21grep00:20:440
1680998014,49cyclictest10932-21grep00:20:440
1680997922,54cyclictest11664-21wget22:25:310
1680997871,5cyclictest0-21swapper/022:56:120
168099783,39cyclictest125-21systemd-journal22:20:470
1680997816,48cyclictest16165-21awk19:50:290
1680997816,48cyclictest16165-21awk19:50:290
1680997814,49cyclictest0-21swapper/020:04:080
168099775,15cyclictest0-21swapper/019:10:300
1680997712,53cyclictest27635-21ssh21:27:010
1680997620,37cyclictest3628-21wget20:45:320
1680997514,41cyclictest646-21aten_rbpower_en23:30:310
1680997414,40cyclictest12737-21taskset21:10:220
28312730,2sleep30-21swapper/321:35:443
1680997321,30cyclictest27129-21rm00:01:060
1680997317,31cyclictest18871-21ssh22:33:590
1680997316,43cyclictest16865-21sh23:50:180
1682997213,8cyclictest7850irq/56-dwc_otg22:05:292
1682997213,8cyclictest7850irq/56-dwc_otg22:05:292
1680997213,45cyclictest13715-21taskset21:49:130
1680997211,41cyclictest9445-21modprobe00:20:180
1680997015,40cyclictest8707-21sh19:30:170
1680997011,44cyclictest0-21swapper/023:38:380
1680996920,45cyclictest17114-21ssh00:29:140
1680996914,44cyclictest7439-21taskset21:40:520
1680996913,42cyclictest0-21swapper/000:12:190
1680996912,48cyclictest0-21swapper/023:50:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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