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2025-12-26 - 08:23

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 376 highest latencies:
System rack9slot4s (updated Fri Dec 26, 2025 00:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
212699912591234,20cyclictest0-21swapper/019:25:140
212709911831156,23cyclictest15420-21users20:30:311
211962562517,30sleep00-21swapper/019:24:490
208782539495,29sleep10-21swapper/119:21:281
2126999149131,3cyclictest0-21swapper/020:30:320
21270998668,14cyclictest21699-21df_inode19:25:141
301602850,7sleep12127099cyclictest00:30:261
311142830,4sleep00-21swapper/000:31:140
289482590,21sleep03-21ksoftirqd/023:22:400
189422590,8sleep02126999cyclictest23:12:130
57172510,3sleep0111rcuc/023:31:490
215732500,7sleep12127099cyclictest23:48:421
138732500,3sleep041ktimersoftd/022:00:210
21270994917,7cyclictest22-21ksoftirqd/100:00:171
21270994820,4cyclictest22-21ksoftirqd/100:49:531
2127099479,6cyclictest22-21ksoftirqd/123:55:281
2127099479,6cyclictest22-21ksoftirqd/121:35:121
21270994712,5cyclictest22-21ksoftirqd/121:13:391
2127099469,6cyclictest22-21ksoftirqd/123:15:221
2127099467,6cyclictest22-21ksoftirqd/100:50:151
21270994618,4cyclictest22-21ksoftirqd/121:21:561
2127099461,7cyclictest22-21ksoftirqd/100:41:201
2127099461,6cyclictest22-21ksoftirqd/122:55:591
21270994615,6cyclictest22-21ksoftirqd/123:31:121
21270994615,10cyclictest22-21ksoftirqd/121:00:301
21270994614,6cyclictest22-21ksoftirqd/121:58:581
21270994611,6cyclictest22-21ksoftirqd/122:46:321
2127099458,6cyclictest22-21ksoftirqd/122:40:121
2127099458,6cyclictest22-21ksoftirqd/119:40:161
21270994520,5cyclictest22-21ksoftirqd/122:02:171
21270994518,8cyclictest22-21ksoftirqd/122:50:151
2127099451,6cyclictest22-21ksoftirqd/123:41:581
2127099451,6cyclictest22-21ksoftirqd/122:10:011
2127099449,6cyclictest22-21ksoftirqd/100:23:001
2127099447,6cyclictest22-21ksoftirqd/119:30:031
2127099446,6cyclictest22-21ksoftirqd/122:15:251
2127099446,6cyclictest22-21ksoftirqd/121:50:261
21270994422,5cyclictest22-21ksoftirqd/123:14:471
21270994419,4cyclictest22-21ksoftirqd/123:22:451
21270994414,10cyclictest22-21ksoftirqd/120:15:301
21269994422,6cyclictest3-21ksoftirqd/022:15:520
2127099434,6cyclictest22-21ksoftirqd/121:15:151
21270994312,6cyclictest22-21ksoftirqd/123:51:421
21270994312,6cyclictest22-21ksoftirqd/122:34:261
21270994312,6cyclictest22-21ksoftirqd/100:17:391
21270994311,6cyclictest22-21ksoftirqd/121:42:251
21270994311,6cyclictest22-21ksoftirqd/121:31:131
21270994310,6cyclictest22-21ksoftirqd/100:05:421
21270994310,5cyclictest22-21ksoftirqd/100:12:321
21270994310,5cyclictest22-21ksoftirqd/100:12:321
2127099429,6cyclictest22-21ksoftirqd/123:36:061
2127099429,6cyclictest22-21ksoftirqd/123:36:061
2127099428,4cyclictest22-21ksoftirqd/123:29:251
2127099426,16cyclictest22-21ksoftirqd/120:40:221
2127099425,6cyclictest22-21ksoftirqd/120:00:281
2127099421,3cyclictest81rcu_preempt00:25:241
21270994212,6cyclictest22-21ksoftirqd/122:39:071
21270994211,8cyclictest22-21ksoftirqd/123:03:131
21270994210,6cyclictest22-21ksoftirqd/121:46:231
21270994210,6cyclictest22-21ksoftirqd/119:52:121
21269994222,9cyclictest3-21ksoftirqd/000:42:250
2127099419,5cyclictest22-21ksoftirqd/121:29:081
2127099418,6cyclictest22-21ksoftirqd/120:11:361
2127099415,6cyclictest22-21ksoftirqd/121:05:131
21270994110,9cyclictest22-21ksoftirqd/122:27:011
21270994110,5cyclictest22-21ksoftirqd/120:05:561
2126999416,31cyclictest0-21swapper/022:59:160
21269994123,5cyclictest3-21ksoftirqd/022:30:190
2127099409,6cyclictest22-21ksoftirqd/120:52:031
2127099404,6cyclictest22-21ksoftirqd/119:35:231
21270994019,4cyclictest22-21ksoftirqd/120:20:261
21270994012,4cyclictest81rcu_preempt19:45:121
21270994012,4cyclictest81rcu_preempt19:45:111
21269994020,9cyclictest3-21ksoftirqd/000:03:070
2127099399,9cyclictest22-21ksoftirqd/122:09:211
2127099398,5cyclictest22-21ksoftirqd/120:28:141
2127099397,4cyclictest81rcu_preempt22:20:261
2127099397,4cyclictest81rcu_preempt20:35:221
2127099396,4cyclictest81rcu_preempt23:05:571
2127099396,4cyclictest81rcu_preempt19:55:281
2127099396,4cyclictest81rcu_preempt00:39:081
2126999396,4cyclictest3-21ksoftirqd/021:38:310
21269993923,7cyclictest3-21ksoftirqd/021:55:130
21269993922,5cyclictest3-21ksoftirqd/021:20:270
21269993919,9cyclictest3-21ksoftirqd/022:20:350
21269993915,14cyclictest3-21ksoftirqd/023:19:120
2127099387,5cyclictest81rcu_preempt20:45:141
21269993831,4cyclictest3-21ksoftirqd/022:25:160
21269993823,4cyclictest3-21ksoftirqd/019:40:280
21269993818,5cyclictest3-21ksoftirqd/023:53:460
21269993818,4cyclictest3-21ksoftirqd/022:38:210
313132370,8sleep02126999cyclictest22:51:200
2127099373,6cyclictest22-21ksoftirqd/120:55:131
21269993723,4cyclictest3-21ksoftirqd/000:05:310
21269993718,8cyclictest3-21ksoftirqd/023:40:210
21269993718,8cyclictest3-21ksoftirqd/022:42:200
21269993717,8cyclictest3-21ksoftirqd/000:20:220
2126999371,12cyclictest11503-21tune2fs00:45:170
2126999362,18cyclictest42-21kswapd023:05:250
21269993621,5cyclictest3-21ksoftirqd/000:15:140
21269993619,6cyclictest26800-21irqstats21:40:200
21269993618,7cyclictest3-21ksoftirqd/021:26:570
2126999361,7cyclictest3-21ksoftirqd/020:56:430
2126999357,11cyclictest3-21ksoftirqd/022:49:100
2126999354,5cyclictest3-21ksoftirqd/020:24:490
2126999352,4cyclictest3281-21sh21:15:330
21269993520,5cyclictest3-21ksoftirqd/023:02:290
21269993515,5cyclictest3-21ksoftirqd/021:50:220
2126999351,29cyclictest31898-21ssh21:12:060
2126999347,4cyclictest81rcu_preempt20:39:580
2126999344,4cyclictest81rcu_preempt23:25:290
21269993420,4cyclictest3-21ksoftirqd/021:46:070
21269993420,4cyclictest3-21ksoftirqd/021:30:200
21269993420,4cyclictest3-21ksoftirqd/000:25:110
21269993419,5cyclictest3-21ksoftirqd/023:39:230
21269993419,5cyclictest3-21ksoftirqd/023:39:230
21269993418,5cyclictest3-21ksoftirqd/023:45:170
21269993418,5cyclictest3-21ksoftirqd/020:03:080
21269993413,6cyclictest3-21ksoftirqd/022:07:150
2126999341,30cyclictest0-21swapper/021:09:350
2126999338,8cyclictest3-21ksoftirqd/019:30:250
2126999335,4cyclictest81rcu_preempt00:35:200
21269993323,7cyclictest0-21swapper/023:59:550
21269993320,4cyclictest3-21ksoftirqd/000:10:290
21269993320,4cyclictest3-21ksoftirqd/000:10:280
21269993319,4cyclictest3-21ksoftirqd/022:10:260
21269993319,4cyclictest3-21ksoftirqd/021:00:200
21269993318,4cyclictest3-21ksoftirqd/000:51:570
21269993317,6cyclictest3-21ksoftirqd/020:10:200
21269993317,4cyclictest3-21ksoftirqd/019:50:180
21269993316,5cyclictest3-21ksoftirqd/019:35:190
2126999324,4cyclictest81rcu_preempt20:46:500
21269993218,4cyclictest3-21ksoftirqd/020:29:470
21269993217,5cyclictest3-21ksoftirqd/020:15:210
2126999321,4cyclictest3-21ksoftirqd/020:42:430
21269993117,4cyclictest3-21ksoftirqd/020:50:240
21269993117,4cyclictest3-21ksoftirqd/019:55:240
2126999305,4cyclictest81rcu_preempt19:48:200
2126999305,4cyclictest81rcu_preempt19:48:200
2126999302,3cyclictest81rcu_preempt20:05:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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