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2026-05-13 - 05:59

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 Wed May 13, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3023699287,1cyclictest34-21ksoftirqd/322:29:483
30222992625,1cyclictest62550irq/127-eno123:40:390
3023699250,24cyclictest3697-21ps22:17:063
3022599250,24cyclictest23861-21diskmemload00:21:071
3022299250,24cyclictest23861-21diskmemload23:16:440
3022299250,1cyclictest31558-21ssh23:10:130
30236992421,2cyclictest23861-21diskmemload22:37:303
3023699240,23cyclictest911-21diskstats23:12:013
3023699240,23cyclictest0-21swapper/323:27:473
3023699240,23cyclictest0-21swapper/322:48:493
3023699240,23cyclictest0-21swapper/300:22:013
3023699240,1cyclictest26337-21ssh23:33:203
3023699240,1cyclictest0-21swapper/322:21:273
30230992423,1cyclictest0-21swapper/223:12:092
3023099240,24cyclictest0-21swapper/221:36:422
3023099240,23cyclictest23861-21diskmemload00:27:112
3023099240,23cyclictest0-21swapper/223:58:322
3023099240,23cyclictest0-21swapper/223:27:072
3023099240,23cyclictest0-21swapper/221:30:462
3023099240,1cyclictest0-21swapper/223:02:162
30225992424,0cyclictest0-21swapper/123:46:541
30225992424,0cyclictest0-21swapper/122:55:511
30225992424,0cyclictest0-21swapper/122:07:321
30225992423,1cyclictest0-21swapper/123:42:131
30225992422,1cyclictest0-21swapper/121:52:021
3022599240,24cyclictest23861-21diskmemload23:11:481
3022599240,23cyclictest7025-21diskmemload22:20:361
3022599240,23cyclictest23861-21diskmemload21:31:291
3022599240,23cyclictest22233-21turbostat20:00:001
3022599240,23cyclictest14126-21ssh21:57:281
3022599240,0cyclictest23861-21diskmemload00:34:211
3022599240,0cyclictest0-21swapper/122:12:281
30222992421,2cyclictest0-21swapper/000:25:300
3022299240,24cyclictest0-21swapper/021:50:570
3022299240,23cyclictest26840-21rm22:09:200
3022299240,0cyclictest0-21swapper/022:48:430
30236992323,0cyclictest0-21swapper/323:37:223
30236992323,0cyclictest0-21swapper/322:58:593
30236992323,0cyclictest0-21swapper/322:33:133
30236992323,0cyclictest0-21swapper/322:33:133
30236992323,0cyclictest0-21swapper/322:13:453
30236992323,0cyclictest0-21swapper/321:39:513
30236992322,1cyclictest8459-21kworker/3:122:42:193
30236992322,1cyclictest34-21ksoftirqd/323:23:413
30236992322,1cyclictest23861-21diskmemload23:57:413
30236992322,1cyclictest0-21swapper/300:34:273
30236992321,1cyclictest34-21ksoftirqd/322:53:123
30236992321,1cyclictest0-21swapper/321:50:073
30236992320,2cyclictest30237-21sh21:15:353
3023699230,23cyclictest0-21swapper/321:20:063
3023699230,22cyclictest926-21cstates00:37:003
3023699230,22cyclictest26342-21rm23:05:533
3023699230,22cyclictest20437-21ssh22:03:153
3023699230,22cyclictest14806-21ssh23:52:033
3023699230,22cyclictest0-21swapper/323:43:383
3023699230,0cyclictest23861-21diskmemload23:45:173
3023699230,0cyclictest23861-21diskmemload21:13:023
3023699230,0cyclictest0-21swapper/321:30:133
3023699230,0cyclictest0-21swapper/300:01:233
30230992323,0cyclictest0-21swapper/223:36:532
30230992323,0cyclictest0-21swapper/223:31:592
30230992323,0cyclictest0-21swapper/222:52:232
30230992323,0cyclictest0-21swapper/221:17:262
30230992323,0cyclictest0-21swapper/200:38:162
30230992321,1cyclictest29123-21apt-get22:11:592
30230992321,1cyclictest2502-21ssh00:09:502
30230992321,1cyclictest2502-21ssh00:09:502
30230992321,1cyclictest0-21swapper/223:46:062
30230992321,1cyclictest0-21swapper/221:55:512
30230992321,1cyclictest0-21swapper/200:33:452
3023099230,23cyclictest0-21swapper/222:30:202
3023099230,23cyclictest0-21swapper/222:30:202
3023099230,23cyclictest0-21swapper/200:10:322
3023099230,22cyclictest6114-21ssh21:51:422
3023099230,22cyclictest5179-21sh23:43:112
3023099230,22cyclictest23861-21diskmemload22:24:492
3023099230,22cyclictest23861-21diskmemload22:06:082
3023099230,22cyclictest23861-21diskmemload00:02:322
3023099230,22cyclictest0-21swapper/222:15:392
3023099230,22cyclictest0-21swapper/220:40:002
3023099230,0cyclictest0-21swapper/223:51:452
3023099230,0cyclictest0-21swapper/222:55:412
3023099230,0cyclictest0-21swapper/222:40:242
3023099230,0cyclictest0-21swapper/222:37:302
3023099230,0cyclictest0-21swapper/222:28:482
30225992323,0cyclictest23861-21diskmemload23:36:421
30225992323,0cyclictest23861-21diskmemload21:10:091
30225992323,0cyclictest0-21swapper/122:15:331
30225992323,0cyclictest0-21swapper/121:25:571
30225992322,1cyclictest9476-21ssh22:51:061
3022599230,23cyclictest23861-21diskmemload00:01:271
3022599230,23cyclictest0-21swapper/123:50:031
3022599230,23cyclictest0-21swapper/122:01:161
3022599230,23cyclictest0-21swapper/100:10:041
3022599230,22cyclictest23861-21diskmemload23:20:171
3022599230,22cyclictest23861-21diskmemload23:00:381
3022599230,0cyclictest23861-21diskmemload22:35:141
3022599230,0cyclictest0-21swapper/123:18:151
3022599230,0cyclictest0-21swapper/122:46:301
3022599230,0cyclictest0-21swapper/100:35:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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