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2026-06-23 - 05:15

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 Tue Jun 23, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7544992913,16cyclictest19401-21kworker/0:123:05:480
755299270,1cyclictest16612-21ssh22:50:062
7552992620,5cyclictest8665-21ssh22:42:052
755299260,25cyclictest0-21swapper/223:40:242
755299260,21cyclictest18668-21ssh22:22:122
7544992619,6cyclictest19401-21kworker/0:123:30:520
755499250,24cyclictest10024-21diskmemload22:15:233
7552992520,4cyclictest10220-21ssh00:39:452
7552992520,4cyclictest0-21swapper/223:52:542
755299250,24cyclictest780-21diskmemload23:47:312
755299250,24cyclictest0-21swapper/222:03:272
755299250,24cyclictest0-21swapper/221:28:022
755299250,21cyclictest8916-21ssh21:15:532
755299250,21cyclictest2359-21ssh00:31:372
755299250,20cyclictest780-21diskmemload23:55:472
755299250,20cyclictest780-21diskmemload00:00:112
755299250,20cyclictest0-21swapper/200:05:042
755299250,1cyclictest7943-21ssh21:45:142
755299250,19cyclictest7038-21apt-get20:15:222
755299250,0cyclictest780-21diskmemload22:47:582
755299250,0cyclictest0-21swapper/221:58:382
754799250,24cyclictest780-21diskmemload22:28:581
754799250,24cyclictest780-21diskmemload00:12:481
754799250,24cyclictest0-21swapper/121:52:241
754799250,24cyclictest0-21swapper/100:29:091
7544992523,1cyclictest780-21diskmemload22:16:570
754499250,0cyclictest0-21swapper/023:35:310
7554992423,1cyclictest30953-21ssh00:29:093
755499240,23cyclictest979-21ssh23:05:053
755499240,23cyclictest4402-21rm21:40:433
755499240,23cyclictest2989-21ssh00:04:163
755499240,23cyclictest0-21swapper/321:32:023
755499240,0cyclictest0-21swapper/319:50:233
7552992423,1cyclictest0-21swapper/221:43:272
7552992420,4cyclictest0-21swapper/222:15:492
7552992420,3cyclictest0-21swapper/221:50:542
7552992419,0cyclictest26306-21apt-get20:55:242
7552992419,0cyclictest0-21swapper/222:08:072
755299240,24cyclictest0-21swapper/222:28:182
755299240,0cyclictest780-21diskmemload21:31:052
755299240,0cyclictest0-21swapper/223:36:132
755299240,0cyclictest0-21swapper/223:18:392
755299240,0cyclictest0-21swapper/223:09:242
7547992424,0cyclictest0-21swapper/121:57:221
754799240,23cyclictest0-21swapper/123:51:321
754799240,23cyclictest0-21swapper/123:01:331
754799240,23cyclictest0-21swapper/122:44:461
754799240,23cyclictest0-21swapper/121:10:281
754799240,1cyclictest8362-21ssh23:40:241
7544992423,1cyclictest780-21diskmemload21:14:540
7544992423,1cyclictest0-21swapper/022:38:520
7544992423,1cyclictest0-21swapper/019:50:230
754499240,24cyclictest0-21swapper/022:48:050
754499240,23cyclictest780-21diskmemload22:23:560
754499240,23cyclictest0-21swapper/021:57:390
754499240,23cyclictest0-21swapper/021:24:170
754499240,1cyclictest780-21diskmemload23:02:320
754499240,0cyclictest0-21swapper/023:22:440
7554992323,0cyclictest780-21diskmemload23:32:543
7554992323,0cyclictest0-21swapper/322:47:423
7554992323,0cyclictest0-21swapper/322:14:143
7554992323,0cyclictest0-21swapper/321:12:283
7554992323,0cyclictest0-21swapper/300:20:153
7554992322,0cyclictest0-21swapper/323:40:243
7554992321,2cyclictest19065-21apt-get20:40:233
7554992321,1cyclictest32761-21sh21:37:503
755499231,1cyclictest9706-21sh23:12:013
755499230,23cyclictest780-21diskmemload22:36:473
755499230,23cyclictest0-21swapper/322:40:243
755499230,23cyclictest0-21swapper/321:45:173
755499230,22cyclictest9060-21ssh21:16:043
755499230,22cyclictest6266-21ssh00:06:023
755499230,22cyclictest31175-21ssh22:05:093
755499230,22cyclictest29763-21rm22:32:023
755499230,22cyclictest22389-21rm23:51:463
755499230,22cyclictest18646-21ssh22:22:103
755499230,22cyclictest15220-21diskmemload21:21:413
755499230,0cyclictest780-21diskmemload23:27:303
755499230,0cyclictest0-21swapper/323:24:143
755499230,0cyclictest0-21swapper/321:55:383
7552992323,0cyclictest0-21swapper/223:13:432
7552992323,0cyclictest0-21swapper/221:22:122
7552992320,3cyclictest0-21swapper/223:00:172
7552992320,3cyclictest0-21swapper/222:57:262
7552992320,0cyclictest0-21swapper/223:30:082
7552992319,0cyclictest780-21diskmemload22:37:012
755299230,23cyclictest0-21swapper/222:10:352
755299230,23cyclictest0-21swapper/221:12:542
755299230,23cyclictest0-21swapper/200:22:502
755299230,22cyclictest29685-21sh00:27:292
755299230,22cyclictest24478-21cut23:25:252
755299230,22cyclictest23628-21apt20:50:012
755299230,22cyclictest12334-21perf19:20:012
755299230,0cyclictest0-21swapper/222:30:082
7547992323,0cyclictest0-21swapper/123:34:241
7547992323,0cyclictest0-21swapper/123:25:231
7547992323,0cyclictest0-21swapper/123:21:081
7547992323,0cyclictest0-21swapper/122:12:151
7547992323,0cyclictest0-21swapper/121:39:451
7547992323,0cyclictest0-21swapper/100:36:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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