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2026-03-06 - 21:46

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 Fri Mar 06, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
299559911131078,18cyclictest0-21swapper/007:26:500
299569910841075,6cyclictest0-21swapper/107:27:061
296062730683,31sleep10-21swapper/107:21:571
297882509427,31sleep00-21swapper/007:23:480
948921070,5sleep02995599cyclictest10:20:160
50712880,8sleep02995599cyclictest07:40:250
236802860,5sleep00-21swapper/009:27:570
295162850,5sleep12995699cyclictest12:20:321
310432730,2sleep00-21swapper/009:35:230
10342690,3sleep0111-21usb-storage08:55:260
322782570,2sleep032277-21hddtemp_smartct07:30:040
29955995015,14cyclictest3-21ksoftirqd/009:42:180
140442480,4sleep114049-21diskmemload12:05:161
29956994419,4cyclictest22-21ksoftirqd/109:31:331
29955994416,18cyclictest3-21ksoftirqd/012:17:450
29955994313,18cyclictest3-21ksoftirqd/010:36:430
29955994313,18cyclictest3-21ksoftirqd/010:36:420
2995699419,28cyclictest0-21swapper/109:17:361
29955994118,8cyclictest3-21ksoftirqd/009:12:070
29955994116,15cyclictest3-21ksoftirqd/012:32:180
29955994115,15cyclictest3-21ksoftirqd/010:49:520
29955994113,15cyclictest3-21ksoftirqd/011:42:570
2995699402,34cyclictest0-21swapper/109:58:151
29955994022,8cyclictest3-21ksoftirqd/011:37:360
29955994021,5cyclictest0-21swapper/009:17:230
29955994017,8cyclictest3-21ksoftirqd/009:34:040
29955994015,14cyclictest3-21ksoftirqd/012:37:460
29955994015,14cyclictest3-21ksoftirqd/010:59:370
29955994015,14cyclictest3-21ksoftirqd/010:15:010
29955994014,15cyclictest3-21ksoftirqd/009:21:360
29955993923,6cyclictest6547-21memory10:50:250
29955993917,8cyclictest3-21ksoftirqd/012:52:020
29955993917,4cyclictest27509-21seq11:45:260
29955993916,8cyclictest3-21ksoftirqd/012:49:340
29955993916,8cyclictest3-21ksoftirqd/009:09:060
29955993915,14cyclictest3-21ksoftirqd/012:40:230
29955993914,6cyclictest3-21ksoftirqd/011:52:250
29955993914,15cyclictest3-21ksoftirqd/012:20:580
29955993914,15cyclictest3-21ksoftirqd/010:30:570
29955993914,15cyclictest3-21ksoftirqd/010:03:550
29955993914,14cyclictest3-21ksoftirqd/011:04:580
29956993827,8cyclictest0-21swapper/109:39:361
2995699381,8cyclictest24336-21ssh09:28:561
29956993813,6cyclictest10911-21sh10:21:011
29955993817,7cyclictest3-21ksoftirqd/007:47:490
29955993816,8cyclictest3-21ksoftirqd/012:26:120
29955993816,8cyclictest3-21ksoftirqd/012:26:120
29955993816,7cyclictest3-21ksoftirqd/010:25:540
29955993816,7cyclictest3-21ksoftirqd/010:10:170
29955993816,6cyclictest3-21ksoftirqd/010:40:300
29955993815,9cyclictest3-21ksoftirqd/009:45:070
29955993814,14cyclictest3-21ksoftirqd/011:17:450
29955993813,14cyclictest3-21ksoftirqd/011:25:360
2995699373,30cyclictest0-21swapper/112:34:561
29956993727,7cyclictest0-21swapper/112:16:151
29955993716,7cyclictest3-21ksoftirqd/011:57:120
29955993715,6cyclictest3-21ksoftirqd/011:30:290
29955993715,6cyclictest3-21ksoftirqd/011:20:310
29955993713,8cyclictest3-21ksoftirqd/009:52:480
29955993713,14cyclictest3-21ksoftirqd/012:05:080
29955993712,15cyclictest3-21ksoftirqd/011:07:070
29955993712,14cyclictest3-21ksoftirqd/011:11:010
29955993711,6cyclictest3-21ksoftirqd/012:15:000
2995699363,31cyclictest0-21swapper/107:57:161
29956993626,6cyclictest16166-21fschecks_time09:20:161
29955993614,6cyclictest3-21ksoftirqd/012:02:270
29955993612,14cyclictest3-21ksoftirqd/010:08:320
28022361,31sleep12971-21cstates09:40:121
2995699357,13cyclictest40550irq/92-i91508:58:131
2995699352,5cyclictest0-21swapper/112:48:161
2995699352,29cyclictest0-21swapper/112:27:361
2995699352,29cyclictest0-21swapper/112:27:361
2995699352,29cyclictest0-21swapper/110:36:561
2995699352,29cyclictest0-21swapper/110:36:551
2995699351,30cyclictest2117-21/usr/sbin/munin07:35:161
2995699351,18cyclictest0-21swapper/109:14:541
29955993520,6cyclictest13771-21aten_r4power_po08:05:110
29955993514,6cyclictest3-21ksoftirqd/008:50:180
181572351,30sleep118168-21ssh12:42:571
126002351,30sleep112047-21/usr/sbin/munin11:30:171
2995699342,30cyclictest0-21swapper/108:50:151
2995699342,13cyclictest0-21swapper/110:48:041
2995699341,7cyclictest5665-21diskmemload09:48:451
2995699341,30cyclictest0-21swapper/109:54:561
29955993413,7cyclictest3-21ksoftirqd/007:51:210
2995599341,21cyclictest21667-21cut08:25:160
29955993410,8cyclictest3-21ksoftirqd/008:00:140
13022341,5sleep11445-21users07:30:301
2995699333,28cyclictest0-21swapper/110:05:351
2995699331,30cyclictest0-21swapper/109:03:561
2995699331,30cyclictest0-21swapper/108:38:151
29955993314,6cyclictest3-21ksoftirqd/007:56:430
29955993312,6cyclictest3-21ksoftirqd/008:16:090
290372331,4sleep029044-21diskstats08:45:150
315592320,3sleep10-21swapper/110:42:581
29956993226,3cyclictest0-21swapper/111:14:561
29956993224,6cyclictest0-21swapper/108:47:361
29956993222,7cyclictest0-21swapper/110:18:151
2995699321,7cyclictest13795-21ssh12:38:391
29956993217,12cyclictest5072-21run-parts07:40:251
2995699321,5cyclictest9061-21diskstats12:00:161
2995699321,5cyclictest0-21swapper/109:05:561
29956993214,15cyclictest22-21ksoftirqd/110:28:391
2995699321,29cyclictest0-21swapper/107:45:151
29956993212,16cyclictest0-21swapper/111:56:091
29956993210,18cyclictest0-21swapper/111:26:011
29955993219,5cyclictest0-21swapper/008:10:230
29955993214,3cyclictest0-21swapper/009:55:230
200822321,27sleep12206-21dbus-daemon11:38:021
2995699311,27cyclictest111-21usb-storage11:23:371
2995699311,27cyclictest111-21usb-storage11:19:381
2995599311,6cyclictest25968-21mailstats08:35:270
2995599311,26cyclictest2481-21cut07:35:150
2995699308,19cyclictest0-21swapper/110:32:471
2995699303,3cyclictest81rcu_preempt11:46:261
2995699301,4cyclictest81rcu_preempt10:10:171
2995699301,27cyclictest0-21swapper/111:50:561
2995599306,7cyclictest30497-21gdbus08:23:170
2995599301,14cyclictest27469-21/usr/sbin/munin08:40:180
2995699295,20cyclictest0-21swapper/110:00:541
29956992916,5cyclictest22-21ksoftirqd/112:12:131
2995699291,5cyclictest0-21swapper/110:55:361
2995699291,3cyclictest81rcu_preempt12:52:021
2995599295,7cyclictest30497-21gdbus08:30:230
29955992911,6cyclictest0-21swapper/009:00:230
2995699284,4cyclictest81rcu_preempt11:42:211
29956992819,5cyclictest15965-21fschecks_count08:10:151
29956992816,8cyclictest22-21ksoftirqd/111:08:411
29956992815,7cyclictest13996-21diskstats08:05:151
2995699281,23cyclictest19349-21/usr/sbin/munin08:20:121
2995699280,4cyclictest81rcu_preempt11:01:141
2995699280,4cyclictest81rcu_preempt10:54:421
212922281,23sleep121446-21cstates08:25:121
134712281,5sleep10-21swapper/108:04:201
29956992718,6cyclictest22-21ksoftirqd/108:31:401
285392271,5sleep10-21swapper/108:44:351
2995699261,21cyclictest8331-21df07:50:121
189802261,5sleep10-21swapper/108:18:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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