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2026-04-19 - 19:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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.
Unexpectedly long latencies may be caused by SMIs
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 rackeslot5s.osadl.org (updated Sun Apr 19, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27173993331,1cyclictest8765-21apt-get11:35:012
27173993230,1cyclictest0-21swapper/211:35:022
27181992921,4cyclictest0-21swapper/310:12:153
2718199270,26cyclictest0-21swapper/311:20:063
2718199260,25cyclictest27574-21cat12:25:013
2718199260,25cyclictest27574-21cat12:25:013
2718199260,22cyclictest21583-21diskmemload10:35:353
2718199260,1cyclictest0-21swapper/311:37:143
2715099260,25cyclictest32317-21cron07:20:010
2715099260,25cyclictest14853-21rm10:36:550
27181992523,2cyclictest0-21swapper/309:25:583
27181992523,1cyclictest0-21swapper/310:04:113
27181992521,4cyclictest0-21swapper/312:15:253
27181992520,4cyclictest6991-21find12:35:093
27181992520,4cyclictest21583-21diskmemload09:30:453
2718199251,23cyclictest0-21swapper/310:20:123
2718199250,24cyclictest0-21swapper/309:25:013
2718199250,21cyclictest6613-21ssh09:57:023
2717399250,21cyclictest0-21swapper/211:08:302
27155992523,1cyclictest0-21swapper/110:50:491
2715599250,24cyclictest1006-21sh11:25:351
2715599250,24cyclictest0-21swapper/112:38:491
2715599250,1cyclictest21583-21diskmemload11:02:231
2715099251,23cyclictest606-21dbus-daemon09:00:000
27181992423,1cyclictest21583-21diskmemload10:48:163
27181992423,1cyclictest19174-21apt-get09:04:593
27181992422,1cyclictest25071-21ssh09:12:223
27181992419,4cyclictest2271-21apt-get12:00:013
27181992419,4cyclictest13640-21ssh11:06:413
27181992419,4cyclictest0-21swapper/307:15:003
27181992418,5cyclictest4523-21ssh12:33:443
27181992417,6cyclictest15067-21grep10:05:073
2718199241,22cyclictest0-21swapper/310:55:013
2718199240,23cyclictest21583-21diskmemload10:25:313
2718199240,21cyclictest21583-21diskmemload12:07:373
2718199240,21cyclictest0-21swapper/310:30:463
2718199240,0cyclictest0-21swapper/311:19:283
2718199240,0cyclictest0-21swapper/310:16:573
27173992423,1cyclictest21583-21diskmemload11:25:082
27173992423,1cyclictest0-21swapper/209:00:012
27173992423,0cyclictest0-21swapper/211:52:332
27173992419,4cyclictest0-21swapper/212:24:302
27173992419,4cyclictest0-21swapper/212:24:302
27173992419,2cyclictest0-21swapper/211:40:112
27155992424,0cyclictest0-21swapper/110:11:541
27155992421,2cyclictest514-21ssh09:50:241
2715599240,2cyclictest313-21systemd-journal10:35:001
2715599240,24cyclictest0-21swapper/112:19:221
2715599240,23cyclictest27246-21sh10:17:331
2715599240,23cyclictest2105-21sendmail-msp12:00:001
2715599240,23cyclictest0-21swapper/112:21:101
2715599240,23cyclictest0-21swapper/112:21:101
2715599240,23cyclictest0-21swapper/110:35:101
27150992424,0cyclictest21583-21diskmemload09:20:010
2715099242,21cyclictest62550irq/127-eno111:05:420
27150992421,2cyclictest0-21swapper/009:58:270
2715099240,2cyclictest5779-21sort11:00:010
2715099240,24cyclictest21583-21diskmemload11:30:290
2715099240,24cyclictest0-21swapper/009:52:160
2715099240,23cyclictest3444-21sh11:29:350
2715099240,23cyclictest21583-21diskmemload11:56:030
2715099240,23cyclictest0-21swapper/010:25:240
27181992323,0cyclictest0-21swapper/311:53:043
27181992321,1cyclictest0-21swapper/308:30:003
27181992320,3cyclictest0-21swapper/309:42:563
27181992320,2cyclictest24426-21dump-pmu-power11:50:013
27181992320,2cyclictest11176-21apt-get08:50:013
27181992318,4cyclictest21583-21diskmemload10:41:393
27181992316,6cyclictest11671-21latency_hist07:45:013
27181992316,3cyclictest0-21swapper/311:29:073
2718199230,2cyclictest13462-21sh12:10:073
2718199230,23cyclictest0-21swapper/311:40:263
2718199230,22cyclictest16363-21apt-get09:00:003
2718199230,0cyclictest21583-21diskmemload11:56:573
2718199230,0cyclictest0-21swapper/310:58:333
2718199230,0cyclictest0-21swapper/309:39:453
2718199230,0cyclictest0-21swapper/309:15:053
27173992323,0cyclictest21583-21diskmemload10:01:392
27173992323,0cyclictest0-21swapper/210:29:192
27173992323,0cyclictest0-21swapper/209:47:522
27173992323,0cyclictest0-21swapper/209:38:512
27173992323,0cyclictest0-21swapper/209:25:422
27173992321,1cyclictest21583-21diskmemload09:55:002
27173992321,1cyclictest0-21swapper/211:21:382
27173992320,1cyclictest26363-21ssh10:48:292
2717399230,23cyclictest0-21swapper/212:09:272
2717399230,23cyclictest0-21swapper/210:23:512
2717399230,23cyclictest0-21swapper/209:41:162
2717399230,22cyclictest8268-21ssh09:59:412
2717399230,22cyclictest6124-21ssh12:03:222
2717399230,22cyclictest2783-21ssh09:22:162
2717399230,22cyclictest16732-21latency_hist09:00:002
2717399230,22cyclictest11589-21cut07:45:002
2717399230,22cyclictest0-21swapper/210:12:562
2717399230,1cyclictest0-21swapper/211:56:282
2717399230,0cyclictest0-21swapper/211:14:052
2717399230,0cyclictest0-21swapper/210:55:022
2717399230,0cyclictest0-21swapper/210:42:272
2717399230,0cyclictest0-21swapper/210:37:192
27155992323,0cyclictest0-21swapper/112:09:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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