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2026-04-03 - 23:43

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Fri Apr 03, 2026 12:45:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32535899109105,2cyclictest0-21swapper/011:35:010
325358991081,103cyclictest0-21swapper/011:20:030
32535899901,3cyclictest150-21pr/ttyS209:00:030
325367998167,12cyclictest396650-21ssh11:40:042
325367998167,12cyclictest396650-21ssh11:40:032
325367998121,24cyclictest403909-21ssh11:56:552
325358998176,3cyclictest0-21swapper/010:55:000
325367998020,19cyclictest365345-21ssh10:27:402
325367997622,16cyclictest391632-21ssh11:28:382
325367997530,14cyclictest377859-21ssh10:56:402
325367997424,16cyclictest383003-21ssh11:08:452
325367997420,16cyclictest357286-21ssh10:09:132
325358997431,10cyclictest3467602-21systemd-journal11:05:000
325367997318,20cyclictest408052-21ssh12:06:292
325367997217,20cyclictest416469-21ssh12:25:572
325367997119,15cyclictest410146-21ssh12:11:182
325358997167,2cyclictest0-21swapper/009:20:040
325367997024,14cyclictest355077-21ssh10:04:082
325367997021,16cyclictest358878-21rm10:12:452
325367997018,21cyclictest337062-21ssh09:22:182
325367997018,14cyclictest420855-21rm12:36:002
325367997016,20cyclictest347252-21ssh09:45:412
325358997012,45cyclictest357599-21sh10:10:020
325367996922,16cyclictest387866-21systemd-run11:20:012
325367996919,17cyclictest360821-21ssh10:17:142
325367996919,16cyclictest332955-21ssh09:12:562
325367996829,13cyclictest325569-21sshd07:13:522
325367996722,14cyclictest326893-21munin-run07:40:012
325367996722,14cyclictest326893-21munin-run07:40:012
325367996721,14cyclictest330988-21sed08:55:022
325367996618,15cyclictest374664-21ssh10:49:272
325367996617,15cyclictest328489-21cut08:10:022
325367996616,18cyclictest389550-21ssh11:23:532
325367996517,14cyclictest419426-21ssh12:33:012
325367996517,14cyclictest419426-21ssh12:33:012
32535899654,48cyclictest325361-21latency_hist07:10:020
325367996447,10cyclictest311031-21kworker/2:309:20:012
325367996418,13cyclictest341870-21ssh09:33:292
325367996418,13cyclictest341870-21ssh09:33:292
325367996318,15cyclictest362628-21ssh10:21:182
325367996316,14cyclictest384041-21ssh11:10:472
325367996216,16cyclictest327195-21latency_hist07:45:012
325367996215,14cyclictest338348-21apt-config09:25:042
32535899622,36cyclictest422474-21ssh12:40:010
325367996021,13cyclictest406330-21ssh12:02:362
325367996021,13cyclictest406330-21ssh12:02:362
325367996015,13cyclictest344421-21ssh09:39:262
325369995913,6cyclictest131rcu_preempt12:11:563
325369995911,6cyclictest131rcu_preempt09:14:513
325367995918,13cyclictest376051-21ssh10:52:352
325367995913,13cyclictest368693-21ssh10:35:152
325367995912,13cyclictest331564-21diskmemload09:41:262
325367995912,13cyclictest331564-21diskmemload09:41:262
325369995810,6cyclictest131rcu_preempt09:55:583
325367995843,11cyclictest397698-21ssh11:42:412
325367995840,15cyclictest367736-21ssh10:33:192
325367995839,15cyclictest380925-21ssh11:03:512
325362995831,17cyclictest23-21ksoftirqd/110:53:131
325358995848,6cyclictest16850irq/134-800000011:59:590
32536999576,10cyclictest37-21ksoftirqd/311:07:373
325367995745,9cyclictest350766-21ssh09:54:072
325367995738,15cyclictest413194-21ssh12:18:382
325367995718,13cyclictest352847-21ssh09:58:592
325367995716,13cyclictest0-21swapper/208:21:502
325362995710,6cyclictest131rcu_preempt10:50:021
325358995740,13cyclictest275-21dbus-daemon08:20:000
325358995727,14cyclictest409286-21ssh12:09:360
325358995725,15cyclictest418425-21ssh12:30:230
325358995725,15cyclictest418425-21ssh12:30:230
325358995720,32cyclictest16850irq/134-800000010:47:250
32536999567,8cyclictest131rcu_preempt11:11:483
325369995614,6cyclictest131rcu_preempt10:40:163
325369995612,6cyclictest131rcu_preempt09:23:313
325369995611,9cyclictest37-21ksoftirqd/309:20:003
325369995610,39cyclictest342498-21unin-run09:35:013
325369995610,39cyclictest342498-21unin-run09:35:013
325367995642,10cyclictest328926-21cron08:17:002
325367995639,13cyclictest414774-21ssh12:22:042
325367995639,13cyclictest399358-21ssh11:46:252
325367995637,15cyclictest371015-21ssh10:40:352
325367995635,17cyclictest392471-21ssh11:30:122
325358995632,19cyclictest348955-21ssh09:50:000
325358995629,12cyclictest354609-21ssh10:02:530
32536999557,11cyclictest37-21ksoftirqd/311:17:113
325369995536,13cyclictest1-21systemd07:45:003
32536999551,12cyclictest37-21ksoftirqd/312:05:453
325367995543,9cyclictest401488-21ssh11:51:122
325367995539,11cyclictest326107-21sshd07:23:412
325367995539,11cyclictest326107-21sshd07:23:402
325362995515,10cyclictest131rcu_preempt12:09:441
32536299551,41cyclictest422597-21ssh12:40:011
32535899555,6cyclictest131rcu_preempt11:43:180
325358995527,13cyclictest416230-21ssh12:25:170
325358995526,14cyclictest390963-21ssh11:27:030
32535899552,37cyclictest345395-21ssh09:41:190
32535899552,37cyclictest345395-21ssh09:41:190
325358995517,4cyclictest12-21ksoftirqd/011:08:410
32535899551,38cyclictest361370-21ssh10:18:340
32536999548,5cyclictest131rcu_preempt11:35:153
32536999548,5cyclictest131rcu_preempt11:35:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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