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2026-03-11 - 05:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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 rack7slot7s.osadl.org (updated Wed Mar 11, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23722210164,33sleep20-21swapper/219:05:512
2377228875,9sleep00-21swapper/019:06:310
2379128067,9sleep30-21swapper/319:06:453
2398427962,13sleep10-21swapper/119:09:161
2412799330,7cyclictest23566-21ssh23:10:131
2413399271,25cyclictest17902-21kworker/3:221:31:583
24130992718,8cyclictest525-21gdbus00:09:202
2413099270,27cyclictest0-21swapper/200:38:352
2413099270,0cyclictest0-21swapper/200:23:062
2412799272,3cyclictest17127-21diskmemload21:15:121
2412799271,2cyclictest5894-21grep22:20:211
2412799267,18cyclictest28133-21taskset23:31:431
24127992621,4cyclictest25-21ksoftirqd/123:03:081
2413099250,23cyclictest0-21swapper/200:33:562
2412799255,1cyclictest17127-21diskmemload00:26:351
2412799250,3cyclictest0-21swapper/121:25:191
2412799250,1cyclictest0-21swapper/100:23:161
2413399241,9cyclictest0-21swapper/300:25:123
2413099240,24cyclictest0-21swapper/222:46:142
2413099240,24cyclictest0-21swapper/222:46:142
2412799242,1cyclictest3945-21grep20:40:201
2412799241,3cyclictest0-21swapper/121:55:131
2413399233,18cyclictest1083-21sh23:15:253
2413099230,22cyclictest0-21swapper/221:55:202
2412799231,3cyclictest17127-21diskmemload00:36:271
2412799230,6cyclictest15438-21processes22:45:201
2412799230,6cyclictest15438-21processes22:45:201
2413099220,21cyclictest0-21swapper/223:10:132
2413099220,21cyclictest0-21swapper/221:51:372
2412799223,2cyclictest15239-21apt-get23:05:141
24127992220,1cyclictest0-21swapper/119:25:131
2412799220,20cyclictest0-21swapper/122:04:381
24133992117,3cyclictest0-21swapper/323:23:173
2413099210,21cyclictest0-21swapper/221:28:282
2412799218,12cyclictest3575-21sh22:58:041
2412799217,14cyclictest0-21swapper/123:18:151
24127992115,5cyclictest0-21swapper/122:37:431
2412799211,2cyclictest0-21swapper/121:35:241
2412499211,16cyclictest4516-21grep00:15:210
274472200,0sleep30-21swapper/322:52:523
2413399201,9cyclictest225-21systemd-journal19:35:003
2413099200,19cyclictest0-21swapper/222:21:172
2413099200,17cyclictest0-21swapper/221:45:122
2412799200,3cyclictest0-21swapper/123:27:481
2412499204,5cyclictest0-21swapper/022:20:130
2412499200,20cyclictest0-21swapper/023:49:530
2413099190,17cyclictest0-21swapper/221:10:162
2413099190,17cyclictest0-21swapper/219:40:122
2412799195,8cyclictest0-21swapper/122:40:121
2412799191,4cyclictest0-21swapper/122:30:121
2412799190,5cyclictest6278-21ssh21:41:361
2412799190,4cyclictest0-21swapper/121:30:141
2412799190,2cyclictest0-21swapper/123:20:131
24130991818,0cyclictest0-21swapper/221:35:132
24130991817,0cyclictest0-21swapper/219:35:142
2413099180,1cyclictest0-21swapper/223:25:582
2413099180,16cyclictest0-21swapper/223:55:042
2412799188,6cyclictest8510-21sh23:59:011
2412799188,6cyclictest13768-21sh21:45:581
2412799184,2cyclictest29336-21df_inode00:30:151
24127991817,1cyclictest0-21swapper/123:41:371
2412499180,2cyclictest0-21swapper/021:39:280
24133991715,2cyclictest17902-21kworker/3:221:57:023
2413399170,9cyclictest0-21swapper/322:48:063
2413399170,9cyclictest0-21swapper/322:48:063
2413399170,1cyclictest0-21swapper/320:25:113
24130991715,2cyclictest0-21swapper/223:01:222
2413099170,14cyclictest0-21swapper/200:26:252
2413099170,0cyclictest0-21swapper/222:30:442
2412799177,6cyclictest24872-21ssh00:08:431
2412499175,8cyclictest5256-21cups-browsed23:20:010
2412499174,4cyclictest25676-21/usr/sbin/munin23:50:170
2412499171,12cyclictest0-21swapper/019:10:140
24133991614,2cyclictest17902-21kworker/3:222:31:533
2413099165,6cyclictest225-21systemd-journal00:15:002
24130991611,4cyclictest5231-21apache223:31:322
2413099161,12cyclictest0-21swapper/222:07:502
2413099160,14cyclictest0-21swapper/223:35:402
2412799169,6cyclictest22287-21rm22:50:121
2412799168,7cyclictest875-21expr23:35:151
2412799168,7cyclictest28595-21expr20:25:141
2412799168,7cyclictest18272-21rm22:28:011
2412799168,7cyclictest14816-21date21:05:011
2412799168,7cyclictest11476-21head20:55:211
2412799167,8cyclictest8545-21sh00:18:031
24127991610,5cyclictest21236-21sort22:10:171
2412799160,1cyclictest0-21swapper/123:52:451
2412799160,15cyclictest20430-21rm23:46:151
2412799160,15cyclictest15720-21ssh22:06:461
2412499161,14cyclictest550-21lldpd19:33:130
2412499161,13cyclictest0-21swapper/023:58:030
24133991514,1cyclictest55750irq/128-enp2s0-23:40:123
2413399151,13cyclictest17127-21diskmemload23:58:463
2413399151,13cyclictest0-21swapper/323:33:513
2413099151,2cyclictest5560-21grep22:00:252
2413099150,10cyclictest0-21swapper/223:52:522
2412799158,6cyclictest5465-21chrt20:45:071
2412799158,6cyclictest31872-21sh22:16:231
2412799158,6cyclictest16937-21ssh00:04:031
2412799157,7cyclictest3550-21chrt19:34:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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