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2026-04-07 - 05:52

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 all highest latencies:
System rack9slot4s (updated Tue Apr 07, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
50779912161180,15cyclictest5973-21strings19:25:220
50789910911070,17cyclictest6052-21ntp_states19:25:241
46172516423,28sleep00-21swapper/019:20:470
49822487410,63sleep10-21swapper/119:24:351
1313821470,7sleep0507799cyclictest00:30:130
242822850,3sleep124278-21ssh23:35:121
29332840,4sleep10-21swapper/121:32:191
273632800,3sleep00-21swapper/021:24:520
119822730,5sleep10-21swapper/121:05:251
507799511,8cyclictest12886-21diskmemload21:55:120
169322480,8sleep1507899cyclictest21:13:521
58072470,8sleep0507799cyclictest20:50:140
5077994722,14cyclictest3-21ksoftirqd/022:13:430
36892470,2sleep13688-21basename20:45:121
5077994623,5cyclictest3-21ksoftirqd/021:10:340
5077994422,8cyclictest3-21ksoftirqd/023:30:160
62992431,30sleep16311-21ssh00:23:031
5077994323,5cyclictest3-21ksoftirqd/000:14:180
5077994224,6cyclictest3-21ksoftirqd/023:07:160
5077994126,4cyclictest3-21ksoftirqd/023:45:010
5077994122,4cyclictest3-21ksoftirqd/022:25:530
507899404,12cyclictest81rcu_preempt21:44:131
5077994024,6cyclictest3-21ksoftirqd/023:20:080
5077994024,5cyclictest3-21ksoftirqd/023:29:430
5077994024,5cyclictest3-21ksoftirqd/021:25:110
5077994023,6cyclictest3-21ksoftirqd/023:51:340
5077994023,6cyclictest3-21ksoftirqd/022:16:220
5077994023,6cyclictest3-21ksoftirqd/019:50:390
5077994023,5cyclictest3-21ksoftirqd/022:21:100
5077994021,4cyclictest3-21ksoftirqd/023:15:140
254742401,5sleep125485-21ssh21:22:091
5077993925,4cyclictest3-21ksoftirqd/000:17:510
5077993924,5cyclictest3-21ksoftirqd/023:10:400
5077993924,5cyclictest3-21ksoftirqd/000:42:290
5077993924,5cyclictest3-21ksoftirqd/000:36:360
5077993924,5cyclictest3-21ksoftirqd/000:26:560
5077993923,5cyclictest3-21ksoftirqd/022:00:180
5077993922,6cyclictest3-21ksoftirqd/020:43:060
5077993921,5cyclictest3-21ksoftirqd/021:47:530
5077993918,5cyclictest3-21ksoftirqd/023:57:140
5077993918,5cyclictest3-21ksoftirqd/021:18:580
507899382,6cyclictest9582-21diskstats21:00:151
5077993823,5cyclictest3-21ksoftirqd/000:08:320
5077993821,6cyclictest3-21ksoftirqd/020:14:480
5077993817,10cyclictest3-21ksoftirqd/000:20:350
507899376,4cyclictest40550irq/92-i91521:57:151
5078993726,5cyclictest22-21ksoftirqd/100:49:591
5077993723,5cyclictest3-21ksoftirqd/022:44:260
5077993722,5cyclictest3-21ksoftirqd/023:45:120
5077993722,5cyclictest3-21ksoftirqd/022:49:040
5077993722,5cyclictest3-21ksoftirqd/021:51:350
5077993722,5cyclictest3-21ksoftirqd/000:00:320
5077993720,6cyclictest3-21ksoftirqd/020:19:000
5077993719,8cyclictest3-21ksoftirqd/023:38:260
5077993718,5cyclictest3-21ksoftirqd/021:36:560
5077993717,9cyclictest3-21ksoftirqd/023:00:320
507799371,34cyclictest0-21swapper/019:59:160
164962370,8sleep0507799cyclictest22:53:280
507899368,6cyclictest0-21swapper/123:01:351
507899366,4cyclictest81rcu_preempt22:10:291
507899363,4cyclictest81rcu_preempt21:16:551
507899362,5cyclictest26052-21diskstats00:10:161
5078993625,8cyclictest0-21swapper/122:57:361
507899362,30cyclictest0-21swapper/122:29:351
5077993621,5cyclictest3-21ksoftirqd/022:09:270
5077993621,5cyclictest3-21ksoftirqd/000:45:130
5077993612,7cyclictest3-21ksoftirqd/021:44:130
139642361,4sleep113971-21ntp_states22:50:261
507899351,30cyclictest9449-21ssh00:25:361
5077993520,5cyclictest3-21ksoftirqd/000:51:080
5077993519,5cyclictest3-21ksoftirqd/020:22:380
5077993515,9cyclictest3-21ksoftirqd/022:33:420
507799351,31cyclictest31191-21grep22:35:150
5077993511,7cyclictest3-21ksoftirqd/022:55:130
63752341,10sleep16482-21aten_r4power_vo23:50:111
507899346,4cyclictest81rcu_preempt23:30:311
507899344,4cyclictest81rcu_preempt22:00:281
507899343,5cyclictest81rcu_preempt23:20:201
507899343,4cyclictest81rcu_preempt19:55:111
507899342,29cyclictest0-21swapper/100:43:361
507899341,4cyclictest81rcu_preempt21:53:501
507899341,4cyclictest81rcu_preempt00:31:371
5077993419,5cyclictest3-21ksoftirqd/021:32:330
5077993418,5cyclictest3-21ksoftirqd/019:36:140
5077993417,6cyclictest3-21ksoftirqd/020:36:340
295722341,4sleep129583-21ssh22:33:391
507899334,4cyclictest81rcu_preempt23:58:211
507899333,4cyclictest81rcu_preempt21:38:271
507899332,28cyclictest0-21swapper/121:49:361
507899331,29cyclictest2324-21ssh00:53:351
507799339,20cyclictest0-21swapper/020:26:450
5077993317,5cyclictest3-21ksoftirqd/020:04:030
507899323,4cyclictest81rcu_preempt21:27:421
507899323,4cyclictest81rcu_preempt19:39:401
507899321,28cyclictest0-21swapper/123:14:551
5077993215,6cyclictest3-21ksoftirqd/020:46:150
507799321,29cyclictest0-21swapper/019:48:560
220902320,7sleep130497-21gdbus00:05:291
507899318,19cyclictest0-21swapper/122:38:001
507899313,4cyclictest81rcu_preempt23:45:041
507899313,4cyclictest81rcu_preempt19:34:541
507899312,4cyclictest81rcu_preempt22:41:121
507899311,5cyclictest0-21swapper/120:10:161
507899311,4cyclictest81rcu_preempt23:07:361
507899311,3cyclictest0-21swapper/120:24:551
507899311,27cyclictest0-21swapper/119:50:551
507899311,11cyclictest0-21swapper/123:42:581
5077993115,5cyclictest3-21ksoftirqd/019:32:340
316222311,5sleep00-21swapper/020:30:540
507899308,5cyclictest81rcu_preempt20:40:001
507899306,4cyclictest81rcu_preempt23:27:271
507899305,4cyclictest81rcu_preempt20:00:391
507899302,14cyclictest9394-21ssh22:45:291
5078993020,6cyclictest4339-21ssh22:07:051
507899301,4cyclictest81rcu_preempt22:23:051
507899301,27cyclictest0-21swapper/120:53:561
507899301,10cyclictest20898-21runrttasks20:05:031
507799302,24cyclictest21203-21diskstats20:05:150
507899299,7cyclictest30497-21gdbus20:59:111
507899294,16cyclictest0-21swapper/100:00:431
507899293,9cyclictest40550irq/92-i91522:17:081
507899293,22cyclictest0-21swapper/100:16:401
507799296,5cyclictest0-21swapper/020:55:250
507799292,13cyclictest10114-21ntp_states21:00:270
129452291,5sleep00-21swapper/019:42:090
124682291,5sleep00-21swapper/021:05:510
507899285,4cyclictest81rcu_preempt20:31:421
507899285,4cyclictest81rcu_preempt19:40:351
507899282,4cyclictest81rcu_preempt23:18:341
5078992818,6cyclictest28634-21cpuspeed_turbos20:25:111
5078992817,6cyclictest13574-21cpuspeed_turbos19:45:111
507899281,5cyclictest81rcu_preempt00:39:511
262022281,5sleep10-21swapper/120:18:141
507899271,4cyclictest81rcu_preempt20:44:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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