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2026-05-17 - 18:45

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 May 17, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24560992726,1cyclictest28-21ksoftirqd/212:23:012
2456099270,26cyclictest0-21swapper/209:40:592
2455699260,1cyclictest4530-21ssh10:52:331
2456299250,24cyclictest17953-21diskmemload10:50:013
24560992523,0cyclictest151rcu_preempt11:33:192
2456099250,24cyclictest17953-21diskmemload10:44:042
2456099250,24cyclictest0-21swapper/211:59:432
2455699250,2cyclictest16488-21apt10:35:001
2455699250,24cyclictest6442-21apt-get12:22:221
2455699250,0cyclictest17953-21diskmemload09:30:341
24552992524,1cyclictest25037-21rm12:09:020
24552992523,1cyclictest9047-21ssh12:23:290
2455299250,24cyclictest18119-21ssh09:38:250
2455299250,24cyclictest17953-21diskmemload10:48:380
24562992422,1cyclictest22017-21idleruntime-cro10:40:013
24562992422,1cyclictest0-21swapper/310:27:233
2456299240,23cyclictest17953-21diskmemload12:00:243
2456299240,23cyclictest17953-21diskmemload11:21:113
2456299240,1cyclictest6407-21/usr/sbin/munin12:22:263
2456299240,0cyclictest0-21swapper/310:19:503
24560992423,1cyclictest28-21ksoftirqd/211:27:492
24560992422,1cyclictest0-21swapper/210:25:462
2456099240,24cyclictest0-21swapper/211:20:362
2456099240,24cyclictest0-21swapper/209:50:212
2456099240,23cyclictest17953-21diskmemload12:08:272
2456099240,23cyclictest17953-21diskmemload10:31:252
2456099240,23cyclictest0-21swapper/210:21:322
24556992422,1cyclictest0-21swapper/111:12:101
2455699240,24cyclictest17953-21diskmemload10:38:091
2455699240,23cyclictest30967-21ssh10:18:361
2455699240,23cyclictest0-21swapper/110:57:221
24552992420,3cyclictest0-21swapper/010:42:230
2455299240,23cyclictest26921-21munin-run07:15:000
2455299240,23cyclictest17953-21diskmemload10:30:090
2455299240,0cyclictest6392-21ssh10:54:590
24562992323,0cyclictest0-21swapper/312:30:223
24562992323,0cyclictest0-21swapper/310:33:493
24562992323,0cyclictest0-21swapper/310:14:403
24562992323,0cyclictest0-21swapper/309:34:553
24562992321,1cyclictest0-21swapper/312:37:563
24562992321,1cyclictest0-21swapper/312:05:063
2456299230,2cyclictest27928-21ssh11:42:323
2456299230,2cyclictest2347-21ssh10:51:503
2456299230,23cyclictest0-21swapper/311:49:323
2456299230,23cyclictest0-21swapper/311:16:063
2456299230,23cyclictest0-21swapper/309:56:033
2456299230,23cyclictest0-21swapper/309:42:163
2456299230,23cyclictest0-21swapper/309:28:343
2456299230,22cyclictest479-21sh10:20:543
2456299230,22cyclictest3356-21ssh11:50:183
2456299230,22cyclictest29277-21apt09:20:013
2456299230,0cyclictest17953-21diskmemload12:14:263
2456299230,0cyclictest0-21swapper/312:16:583
2456299230,0cyclictest0-21swapper/309:50:083
2456299230,0cyclictest0-21swapper/309:46:333
24560992323,0cyclictest17953-21diskmemload11:49:242
24560992323,0cyclictest17953-21diskmemload10:13:272
24560992323,0cyclictest0-21swapper/212:39:582
24560992323,0cyclictest0-21swapper/212:17:252
24560992323,0cyclictest0-21swapper/210:56:352
24560992323,0cyclictest0-21swapper/209:49:522
24560992321,1cyclictest0-21swapper/210:50:392
24560992321,1cyclictest0-21swapper/209:58:202
24560992321,1cyclictest0-21swapper/209:32:322
24560992320,2cyclictest30750-21sh10:47:272
2456099231,21cyclictest313-21systemd-journal07:55:002
2456099230,23cyclictest0-21swapper/211:10:192
2456099230,23cyclictest0-21swapper/210:35:282
2456099230,23cyclictest0-21swapper/210:15:122
2456099230,22cyclictest31018-21ssh09:22:022
2456099230,22cyclictest17953-21diskmemload12:30:492
2456099230,22cyclictest10381-21sh12:25:052
2456099230,1cyclictest28-21ksoftirqd/211:09:232
2456099230,0cyclictest0-21swapper/212:02:582
2456099230,0cyclictest0-21swapper/211:50:562
2456099230,0cyclictest0-21swapper/211:16:012
24556992323,0cyclictest0-21swapper/112:16:411
24556992323,0cyclictest0-21swapper/112:11:361
24556992323,0cyclictest0-21swapper/111:56:561
24556992323,0cyclictest0-21swapper/110:42:161
24556992323,0cyclictest0-21swapper/110:00:171
24556992321,1cyclictest0-21swapper/112:35:391
2455699230,2cyclictest25195-21ssh12:09:131
2455699230,23cyclictest17953-21diskmemload11:09:021
2455699230,23cyclictest0-21swapper/111:38:551
2455699230,23cyclictest0-21swapper/110:29:381
2455699230,22cyclictest7968-21ssh11:25:241
2455699230,22cyclictest30489-21ssh11:45:391
2455699230,22cyclictest26141-21ssh09:46:281
2455699230,22cyclictest17953-21diskmemload11:02:251
2455699230,22cyclictest14751-21ssh09:36:081
2455699230,22cyclictest1151-21diskmemload10:21:421
2455699230,22cyclictest0-21swapper/112:30:361
2455699230,0cyclictest17953-21diskmemload11:15:111
2455699230,0cyclictest0-21swapper/109:53:131
24552992323,0cyclictest0-21swapper/012:04:570
24552992323,0cyclictest0-21swapper/010:15:160
24552992323,0cyclictest0-21swapper/010:12:540
24552992323,0cyclictest0-21swapper/009:47:150
24552992323,0cyclictest0-21swapper/009:13:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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