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2026-03-06 - 16:31

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 Fri Mar 06, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2456528774,9sleep20-21swapper/207:09:412
2439528371,8sleep00-21swapper/007:07:310
2436327967,8sleep30-21swapper/307:07:053
2245927857,6sleep10-21swapper/107:05:061
283092550,0sleep00-21swapper/009:15:290
2467799320,2cyclictest17478-21diskmemload10:44:590
2467799300,7cyclictest1887-21idleruntime-cro12:14:590
2467799290,5cyclictest16380-21ls10:45:250
24684992322,1cyclictest0-21swapper/311:56:513
2468299230,21cyclictest0-21swapper/212:35:412
2467799230,1cyclictest0-21swapper/011:12:070
2468299220,21cyclictest0-21swapper/209:51:232
2467799222,5cyclictest1142-21runrttasks09:48:000
2468299211,20cyclictest0-21swapper/210:32:502
2468299210,20cyclictest0-21swapper/212:27:042
2468299210,18cyclictest0-21swapper/211:57:162
2467799216,1cyclictest0-21swapper/012:35:080
2467799216,11cyclictest24668-21cyclictest11:05:380
2467799214,2cyclictest17478-21diskmemload10:15:110
2467799213,1cyclictest17478-21diskmemload10:01:240
2467799210,20cyclictest0-21swapper/011:33:350
24678992019,1cyclictest0-21swapper/110:45:331
24678992013,3cyclictest1206-21chrt12:14:291
170372200,0sleep20-21swapper/210:07:272
24684991919,0cyclictest0-21swapper/311:04:243
2468299192,13cyclictest17820-21/usr/sbin/munin11:25:242
24682991919,0cyclictest0-21swapper/209:21:032
2468299190,19cyclictest0-21swapper/211:49:332
2467899190,3cyclictest0-21swapper/111:56:101
2467799190,16cyclictest0-21swapper/008:45:140
2467799190,12cyclictest0-21swapper/011:17:480
2467799190,11cyclictest0-21swapper/011:22:550
2468499180,2cyclictest0-21swapper/311:30:223
2468299180,18cyclictest0-21swapper/210:24:222
2467899183,6cyclictest13039-21apt-config10:25:001
2467899183,2cyclictest141rcu_preempt09:48:271
2467799187,6cyclictest27033-21awk07:15:000
2467799181,6cyclictest1142-21runrttasks11:54:290
2468499170,1cyclictest0-21swapper/312:08:143
24682991717,0cyclictest0-21swapper/210:51:162
2467899179,2cyclictest0-21swapper/109:31:061
24678991717,0cyclictest0-21swapper/111:52:461
24678991714,2cyclictest0-21swapper/110:02:591
24678991712,2cyclictest4196-21apt-key07:34:591
2467799178,2cyclictest11970-21grep07:50:140
2467799173,2cyclictest0-21swapper/009:24:470
24677991715,2cyclictest13-21ksoftirqd/011:03:250
24677991710,6cyclictest635-21grep10:55:250
24677991710,6cyclictest13073-21ssh10:25:010
24677991710,6cyclictest12956-21grep09:00:150
24677991710,5cyclictest22825-21tail10:30:170
2468499168,5cyclictest537-21snmpd10:57:413
2468499160,1cyclictest0-21swapper/311:16:153
2468499160,14cyclictest0-21swapper/311:43:243
2468499160,0cyclictest0-21swapper/312:27:083
2468299160,16cyclictest0-21swapper/212:13:382
24678991615,1cyclictest0-21swapper/109:40:471
24678991610,4cyclictest25153-21tr07:10:141
2467899160,9cyclictest0-21swapper/111:26:041
2467899160,15cyclictest0-21swapper/112:22:401
2467799169,6cyclictest28070-21cut12:30:170
2467799167,2cyclictest16835-21ssh12:04:340
2467799160,4cyclictest0-21swapper/011:44:340
2467799160,2cyclictest0-21swapper/008:30:140
24684991514,1cyclictest0-21swapper/312:34:183
2468499150,3cyclictest0-21swapper/309:46:463
2468499150,14cyclictest0-21swapper/309:29:373
2468499150,11cyclictest0-21swapper/309:00:143
2468299151,13cyclictest29236-21ssh09:55:182
2468299150,15cyclictest0-21swapper/211:42:442
2468299150,14cyclictest0-21swapper/212:01:052
2467899156,8cyclictest19078-21munin-node10:18:001
2467899156,5cyclictest225-21systemd-journal11:17:001
2467899155,9cyclictest38150irq/131-snd_hda11:12:241
2467899152,8cyclictest0-21swapper/111:05:261
2467899152,12cyclictest0-21swapper/112:39:001
2467899151,9cyclictest17499-21ssh10:26:561
24678991511,2cyclictest38150irq/131-snd_hda11:21:421
2467899151,10cyclictest0-21swapper/109:15:011
2467799159,5cyclictest2749-21grep07:30:170
2467799159,5cyclictest16457-21grep09:05:200
2467799158,2cyclictest26949-21grep08:20:160
2467799158,2cyclictest10713-21cut09:25:150
2467799158,1cyclictest5535-21sleep08:45:000
2467799158,1cyclictest28939-21cat09:35:260
2467799158,1cyclictest11477-21grep08:55:180
2467799157,2cyclictest2727-21sed08:35:260
2467799157,2cyclictest21590-21ssh12:25:500
2467799155,6cyclictest12422-21apt-get10:05:130
2467799153,7cyclictest16306-21awk07:59:590
24677991513,1cyclictest17478-21diskmemload10:11:290
2467799150,7cyclictest0-21swapper/011:27:050
2467799150,1cyclictest0-21swapper/011:58:170
2468499142,8cyclictest537-21snmpd12:13:443
2468499142,7cyclictest0-21swapper/308:55:003
2468499141,9cyclictest27108-21/usr/sbin/munin09:35:193
24684991411,2cyclictest4874-21chrt09:20:573
24682991412,1cyclictest17478-21diskmemload09:36:572
24682991410,3cyclictest11532-21ssh09:25:192
2468299140,3cyclictest0-21swapper/210:25:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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