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2026-05-05 - 19:04

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 Tue May 05, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2286210185,9sleep00-21swapper/019:06:250
228329986,9sleep20-21swapper/219:06:242
182829853,41sleep10-21swapper/119:05:251
114829551,39sleep30-21swapper/319:05:203
268299260,26cyclictest0-21swapper/221:38:352
268299250,22cyclictest0-21swapper/223:51:412
75252220,0sleep00-21swapper/000:31:340
2688992219,2cyclictest39-21ksoftirqd/300:08:213
268899220,1cyclictest28063-21diskmemload21:49:273
268299220,21cyclictest0-21swapper/200:25:272
268299220,1cyclictest0-21swapper/221:29:332
267699220,5cyclictest6452-21kworker/1:300:37:561
128192220,0sleep30-21swapper/323:36:283
2688992118,1cyclictest2669-21cyclictest21:58:323
268299210,21cyclictest0-21swapper/200:34:542
267499210,4cyclictest0-21swapper/022:51:540
268899202,7cyclictest0-21swapper/319:30:143
268899200,20cyclictest0-21swapper/322:52:243
268299200,20cyclictest0-21swapper/222:59:412
268299200,19cyclictest0-21swapper/223:38:402
2676992018,1cyclictest0-21swapper/100:00:141
267499200,19cyclictest0-21swapper/019:45:120
267699190,19cyclictest0-21swapper/121:11:161
2682991817,1cyclictest0-21swapper/200:05:492
268299180,2cyclictest0-21swapper/223:13:072
267699180,16cyclictest0-21swapper/121:23:571
2688991717,0cyclictest0-21swapper/322:41:063
2682991715,1cyclictest0-21swapper/223:05:242
268299171,2cyclictest0-21swapper/223:20:132
268299170,17cyclictest0-21swapper/223:56:582
2676991715,1cyclictest0-21swapper/123:37:301
267699171,15cyclictest0-21swapper/123:10:061
267699170,1cyclictest0-21swapper/121:52:011
267699170,16cyclictest0-21swapper/122:10:231
267499175,6cyclictest18328-21munin-run20:50:000
267499173,10cyclictest21259-21sensors00:20:210
2674991714,2cyclictest0-21swapper/023:27:040
268899163,7cyclictest0-21swapper/319:10:143
2688991616,0cyclictest0-21swapper/323:41:063
2688991616,0cyclictest0-21swapper/323:41:053
268299161,14cyclictest6223-21ssh21:55:142
268299160,16cyclictest0-21swapper/222:46:112
268299160,16cyclictest0-21swapper/222:43:202
268299160,16cyclictest0-21swapper/222:02:572
268299160,15cyclictest0-21swapper/200:02:292
268299160,14cyclictest0-21swapper/221:13:592
268299160,0cyclictest0-21swapper/223:31:582
267699165,3cyclictest30689-21/usr/sbin/munin21:30:221
267699162,13cyclictest28063-21diskmemload21:41:381
2676991614,1cyclictest25-21ksoftirqd/121:26:491
2676991613,2cyclictest13899-21/usr/sbin/munin22:00:161
267699160,16cyclictest0-21swapper/123:17:421
267699160,13cyclictest0-21swapper/121:55:281
267499166,5cyclictest28625-21perf21:30:000
2674991610,4cyclictest15634-21ls22:00:270
107622160,1sleep339-21ksoftirqd/322:17:263
2688991514,1cyclictest0-21swapper/322:37:433
268299159,3cyclictest225-21systemd-journal21:34:552
268299155,4cyclictest1436-21sendmail-mta21:41:242
268299151,12cyclictest8909-21wc20:30:012
268299150,1cyclictest0-21swapper/222:07:372
268299150,15cyclictest0-21swapper/222:11:492
268299150,15cyclictest0-21swapper/200:17:162
268299150,0cyclictest0-21swapper/222:15:062
267699159,6cyclictest1646-21apache223:34:431
2676991513,2cyclictest25-21ksoftirqd/122:23:021
2676991513,1cyclictest0-21swapper/122:35:431
267699151,13cyclictest0-21swapper/121:45:151
267699150,2cyclictest0-21swapper/121:15:151
267499151,13cyclictest0-21swapper/022:22:430
268899144,6cyclictest12132-21cron19:29:593
2688991414,0cyclictest0-21swapper/322:09:403
2688991411,2cyclictest15475-21wc22:00:243
2688991410,3cyclictest28173-21sed23:45:263
268899140,13cyclictest17167-21cat20:45:183
268299141,7cyclictest4234-21ntpq00:10:202
2682991414,0cyclictest0-21swapper/220:05:132
2682991410,3cyclictest31968-21grep22:30:152
268299140,12cyclictest0-21swapper/223:25:082
267699149,5cyclictest1646-21apache223:03:101
267699145,6cyclictest31648-21/usr/sbin/munin20:10:111
267699143,4cyclictest0-21swapper/123:25:131
2676991412,1cyclictest0-21swapper/123:41:031
2676991412,1cyclictest0-21swapper/123:41:021
2676991410,3cyclictest26191-21grep19:55:251
2676991410,3cyclictest13127-21tail19:30:161
267699140,2cyclictest141rcu_preempt20:40:141
267699140,10cyclictest0-21swapper/120:05:141
2674991410,2cyclictest6895-21grep21:35:270
2674991410,2cyclictest4038-21wc00:10:190
267499140,8cyclictest94-21kswapd021:55:010
268899139,3cyclictest4526-21grep20:20:133
268899134,7cyclictest19764-21apt-get19:45:133
2688991310,2cyclictest9785-21grep20:30:173
2688991310,2cyclictest28597-21df00:25:163
2688991310,2cyclictest19306-21grep20:50:183
2688991310,2cyclictest17085-21grep23:00:173
2688991310,2cyclictest15617-21grep22:20:173
2688991310,2cyclictest12575-21grep20:35:193
268899130,1cyclictest0-21swapper/323:20:473
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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