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2026-04-12 - 16:21

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 Sun Apr 12, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1491799986,77cyclictest0-21swapper/020:50:530
324032890,9sleep1221ktimersoftd/120:32:161
1491899836,36cyclictest7950irq/56-dwc_otg_17:00:551
1491899836,36cyclictest7950irq/56-dwc_otg_17:00:551
130022820,2sleep00-21swapper/020:48:170
215462810,2sleep20-21swapper/219:02:032
14917997421,16cyclictest0-21swapper/019:20:550
83592720,2sleep20-21swapper/220:03:512
14917997132,24cyclictest0-21swapper/018:40:550
12982710,2sleep20-21swapper/221:13:032
205672700,3sleep121-21rcuc/116:45:521
305322680,1sleep00-21swapper/017:11:070
198402670,1sleep30-21swapper/320:17:043
1491799661,6cyclictest19703-21sh20:56:060
14917996518,26cyclictest23660-21idleruntime-cro19:05:420
1491799651,33cyclictest0-21swapper/021:35:540
1491799647,23cyclictest0-21swapper/017:15:540
1491799621,57cyclictest25904-21cron18:30:420
144612612,52sleep30-21swapper/316:28:193
324862600,3sleep337-21rcuc/319:15:493
145312584,12sleep10-21swapper/116:29:141
1491799571,51cyclictest3704-21modprobe21:55:420
1491999567,28cyclictest0-21swapper/217:10:472
1491799567,28cyclictest0-21swapper/017:00:560
1491799567,28cyclictest0-21swapper/017:00:560
14917995531,11cyclictest908-21runrttasks19:08:560
14917995531,11cyclictest908-21runrttasks19:08:560
14917995524,16cyclictest0-21swapper/020:15:540
1491799552,28cyclictest30630-21/usr/sbin/munin18:36:100
14917995511,25cyclictest0-21swapper/016:35:480
1491799548,25cyclictest0-21swapper/020:00:590
14917995433,5cyclictest7750irq/56-dwc_otg19:41:110
14917995334,7cyclictest7750irq/56-dwc_otg18:15:420
14917995333,6cyclictest7750irq/56-dwc_otg19:31:070
14917995325,15cyclictest23064-21grep16:51:040
14917995323,12cyclictest29373-21sed21:46:090
14917995323,12cyclictest29373-21sed21:46:090
48952520,8sleep09-21ksoftirqd/020:38:390
48952520,8sleep09-21ksoftirqd/020:38:390
14917995229,6cyclictest7471-21wc18:46:020
14917995224,4cyclictest9616-21rm20:05:430
14917995224,4cyclictest9616-21rm20:05:430
14917995222,12cyclictest16076-21grep16:31:100
14917995221,4cyclictest7950irq/56-dwc_otg_20:11:100
1491899517,25cyclictest0-21swapper/117:50:571
1491899511,7cyclictest7950irq/56-dwc_otg_19:10:531
1491799516,24cyclictest0-21swapper/020:35:400
1491799514,14cyclictest0-21swapper/019:25:540
14917995131,7cyclictest7750irq/56-dwc_otg18:50:580
14917995129,5cyclictest11089-21latency_hist21:25:430
14917995125,11cyclictest0-21swapper/019:36:100
14917995123,13cyclictest9208-21sed17:41:110
14917995121,16cyclictest0-21swapper/019:50:420
1491799511,26cyclictest24978-21timerandwakeup21:41:090
1491799511,26cyclictest24978-21timerandwakeup21:41:090
14918995022,5cyclictest1394150wget20:10:561
1491799509,22cyclictest0-21swapper/017:20:570
14917995023,15cyclictest22578-21fschecks_time20:21:000
14917995021,15cyclictest0-21swapper/017:35:420
14917995021,15cyclictest0-21swapper/017:35:420
1491899497,18cyclictest0-21swapper/118:50:551
14917994935,5cyclictest0-21swapper/019:10:530
14917994932,7cyclictest7850irq/56-dwc_otg_21:26:070
14917994928,6cyclictest19556-21latency_hist21:35:430
1491799492,25cyclictest13582-21aten_rbpower_en17:55:560
14917994921,16cyclictest1313-21grep19:16:100
14917994919,14cyclictest6067-21sh21:19:120
1491899487,24cyclictest0-21swapper/117:10:471
14918994823,5cyclictest6057-21idleruntime-cro20:40:431
14918994823,5cyclictest6057-21idleruntime-cro20:40:431
14917994824,4cyclictest30070-21grep19:51:000
14917994818,15cyclictest12705-21cat17:51:110
1491799481,32cyclictest0-21swapper/021:00:530
1491799481,29cyclictest0-21swapper/020:26:050
1491799481,27cyclictest31441-21seq21:10:560
1491799481,14cyclictest28033-21ssh21:06:050
14919994717,18cyclictest0-21swapper/219:45:422
14919994713,4cyclictest7950irq/56-dwc_otg_17:21:042
1491799471,16cyclictest0-21swapper/018:31:310
14919994613,20cyclictest7850irq/56-dwc_otg_18:50:552
1491899467,25cyclictest0-21swapper/117:05:561
14917994627,5cyclictest6437-21aten_rbpower_en20:40:560
14917994625,5cyclictest19929-21grep16:41:100
14917994623,6cyclictest7750irq/56-dwc_otg19:56:060
1491799461,25cyclictest0-21swapper/018:06:050
1491799461,22cyclictest7891-21grep22:00:420
174612440,5sleep11491899cyclictest21:32:151
1491999447,25cyclictest0-21swapper/217:05:562
1491999446,27cyclictest15573-21chrt21:30:552
14917994422,10cyclictest11482-21munin-run17:50:420
14917994419,11cyclictest0-21swapper/018:21:020
14917994412,4cyclictest908-21runrttasks16:49:250
145032443,35sleep00-21swapper/016:28:520
14920994337,4cyclictest7284-21sh21:20:583
1491999431,5cyclictest27230-21apt-get21:05:532
14918994312,22cyclictest0-21swapper/117:20:561
14917994326,4cyclictest0-21swapper/018:55:550
14917994317,14cyclictest0-21swapper/016:56:050
60542420,2sleep10-21swapper/118:45:031
311942420,4sleep31492099cyclictest21:10:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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