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2026-01-11 - 00:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 highest latencies:
System rack9slot4s (updated Sat Jan 10, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135029912541231,20cyclictest0-21swapper/107:35:021
135029912031194,6cyclictest0-21swapper/107:25:081
135019911171093,21cyclictest0-21swapper/007:25:100
130802645600,31sleep10-21swapper/107:21:161
129932452355,31sleep00-21swapper/007:20:310
78021200,8sleep01350199cyclictest12:41:430
2705321030,8sleep01350199cyclictest12:35:260
1362121010,5sleep01350199cyclictest11:15:160
13501998666,4cyclictest18067-21apt-config07:35:020
199792830,7sleep01350199cyclictest10:48:170
39062780,6sleep11350299cyclictest08:20:261
39062780,6sleep11350299cyclictest08:20:261
9022610,4sleep041ktimersoftd/010:28:430
232592520,5sleep1201rcuc/109:10:291
13502994924,13cyclictest22-21ksoftirqd/109:48:081
250362451,31sleep025047-21ssh10:53:370
13502994524,5cyclictest22-21ksoftirqd/110:48:461
13502994325,6cyclictest22-21ksoftirqd/111:33:511
47082420,9sleep11350299cyclictest11:39:471
13501994212,27cyclictest3-21ksoftirqd/009:36:400
13502994126,5cyclictest22-21ksoftirqd/110:12:381
13502994124,6cyclictest22-21ksoftirqd/112:43:231
13502994115,14cyclictest22-21ksoftirqd/111:09:331
13502994025,4cyclictest22-21ksoftirqd/111:01:201
13502994024,5cyclictest22-21ksoftirqd/112:05:391
13502994023,6cyclictest22-21ksoftirqd/108:50:091
13502994017,5cyclictest22-21ksoftirqd/110:02:441
13502993929,6cyclictest2421-21diskstats10:30:151
13502993924,5cyclictest22-21ksoftirqd/111:58:071
13502993924,5cyclictest22-21ksoftirqd/110:58:101
13502993923,5cyclictest22-21ksoftirqd/112:31:281
13502993923,5cyclictest22-21ksoftirqd/109:37:581
13502993918,5cyclictest22-21ksoftirqd/111:49:571
217662381,4sleep021777-21ssh09:43:010
13502993824,4cyclictest22-21ksoftirqd/109:55:351
13502993823,5cyclictest22-21ksoftirqd/112:13:351
13502993823,5cyclictest22-21ksoftirqd/112:02:461
13502993823,5cyclictest22-21ksoftirqd/111:16:491
13502993823,5cyclictest22-21ksoftirqd/110:51:311
13502993823,5cyclictest22-21ksoftirqd/109:31:281
13502993822,5cyclictest22-21ksoftirqd/111:44:081
74682371,32sleep07479-21ssh10:01:100
13502993723,4cyclictest22-21ksoftirqd/109:44:391
13502993721,5cyclictest22-21ksoftirqd/108:17:321
13502993717,8cyclictest22-21ksoftirqd/110:42:511
1350299371,22cyclictest8205-21users12:15:301
13502993712,14cyclictest22-21ksoftirqd/112:20:131
13502993711,12cyclictest28196-21sh09:15:361
1350199376,28cyclictest0-21swapper/009:46:400
1350199375,28cyclictest0-21swapper/009:50:360
1350199371,31cyclictest3256-21sendmail-mta08:37:160
13502993622,4cyclictest22-21ksoftirqd/112:37:301
1350299362,18cyclictest31560-21wget08:10:111
13502993621,5cyclictest22-21ksoftirqd/108:44:321
13502993620,5cyclictest22-21ksoftirqd/111:22:571
13502993620,5cyclictest22-21ksoftirqd/110:39:281
13502993617,4cyclictest22-21ksoftirqd/109:20:041
1350299361,5cyclictest21538-21diskmemload10:21:351
13502993614,7cyclictest22-21ksoftirqd/109:29:321
13502993611,10cyclictest22-21ksoftirqd/112:48:501
13502993610,6cyclictest22-21ksoftirqd/110:15:231
1350199362,30cyclictest0-21swapper/010:13:560
1350199361,10cyclictest18938-21ls11:20:220
263552351,30sleep026369-21ssh11:28:170
143892351,5sleep114399-21ssh10:09:101
1350299352,15cyclictest0-21swapper/111:25:101
13502993520,5cyclictest22-21ksoftirqd/109:54:431
13502993519,6cyclictest22-21ksoftirqd/108:31:031
13502993519,5cyclictest22-21ksoftirqd/112:26:431
13502993519,5cyclictest22-21ksoftirqd/111:51:181
1350199356,4cyclictest0-21swapper/009:58:040
1350199352,5cyclictest0-21swapper/011:40:350
1350199352,29cyclictest0-21swapper/010:57:160
1350299349,12cyclictest0-21swapper/107:40:101
13502993419,5cyclictest22-21ksoftirqd/109:05:591
13502993418,5cyclictest22-21ksoftirqd/110:26:141
13502993417,5cyclictest22-21ksoftirqd/112:53:201
13501993416,14cyclictest3-21ksoftirqd/012:01:000
1350199341,31cyclictest0-21swapper/011:53:150
1350299332,28cyclictest0-21swapper/111:11:061
1350199337,15cyclictest4556-21ssh09:25:170
1350199334,4cyclictest81rcu_preempt11:05:580
1350199334,4cyclictest81rcu_preempt10:32:510
13501993325,6cyclictest0-21swapper/010:15:550
1350199332,4cyclictest81rcu_preempt10:38:560
1350199331,30cyclictest0-21swapper/012:29:150
1350199331,30cyclictest0-21swapper/009:09:150
1350199331,29cyclictest0-21swapper/008:03:150
1350199330,3cyclictest81rcu_preempt11:31:260
1350299321,7cyclictest17001-21ntpq07:30:251
13502993217,5cyclictest22-21ksoftirqd/108:28:421
13502993217,5cyclictest22-21ksoftirqd/107:51:321
1350299321,13cyclictest29657-21wget08:05:101
1350199323,4cyclictest81rcu_preempt12:10:530
1350199322,4cyclictest81rcu_preempt11:46:390
1350199322,4cyclictest81rcu_preempt11:02:410
1350199322,13cyclictest0-21swapper/008:54:380
1350199321,5cyclictest0-21swapper/010:42:350
1350199321,3cyclictest81rcu_preempt12:20:540
1350199321,29cyclictest0-21swapper/011:36:360
1350199321,28cyclictest3-21ksoftirqd/010:08:380
33272311,4sleep03386-21hddtemp_smartct08:20:170
33272311,4sleep03386-21hddtemp_smartct08:20:160
320272311,5sleep00-21swapper/012:07:110
1350199314,5cyclictest81rcu_preempt11:10:380
1350199313,4cyclictest81rcu_preempt11:56:090
1350199313,4cyclictest81rcu_preempt09:32:140
13501993124,3cyclictest0-21swapper/012:18:360
1350199312,26cyclictest30497-21gdbus09:20:400
1350199311,4cyclictest81rcu_preempt09:13:360
1350199311,4cyclictest81rcu_preempt08:30:170
1350199310,4cyclictest81rcu_preempt12:31:170
287712301,5sleep00-21swapper/009:16:260
269502301,4sleep126909-21apt-get07:55:471
1350299304,8cyclictest22-21ksoftirqd/108:56:471
1350199302,4cyclictest81rcu_preempt12:54:430
1350199301,27cyclictest0-21swapper/008:43:360
1350199300,3cyclictest81rcu_preempt08:56:480
234702291,5sleep00-21swapper/007:48:560
233182291,5sleep130497-21gdbus07:47:201
13502992915,4cyclictest22-21ksoftirqd/109:02:081
13502992913,6cyclictest22-21ksoftirqd/108:48:401
1350199295,4cyclictest81rcu_preempt08:26:290
1350199293,4cyclictest81rcu_preempt12:45:240
1350199292,14cyclictest31734-21df08:10:110
13501992917,7cyclictest16090-21irqstats07:30:060
1350199291,4cyclictest81rcu_preempt10:20:450
1350299281,5cyclictest0-21swapper/108:01:231
1350299281,15cyclictest9024-21wget08:35:171
250702271,5sleep00-21swapper/007:51:010
1350199274,8cyclictest12584-21diskstats08:45:140
1350199272,13cyclictest29645-21/usr/sbin/munin08:05:110
1350199272,12cyclictest18631-21memory09:00:220
1350199271,13cyclictest20489-21smartctl07:40:160
1350199271,13cyclictest1710-21ntp_states08:15:230
1350199251,12cyclictest26943-21chrt07:55:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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