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2026-08-02 - 05:11

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #8

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 rackbslot8s (updated Sun Aug 02, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21940732128110,13sleep50-21swapper/519:05:285
2194369212496,23sleep30-21swapper/319:09:433
21942072121106,10sleep70-21swapper/719:07:237
21940992118104,9sleep40-21swapper/419:05:514
21940772116101,10sleep00-21swapper/019:05:320
2194246211399,9sleep10-21swapper/119:07:571
2194377211298,9sleep20-21swapper/219:09:502
219463099107103,4cyclictest31-21ksoftirqd/200:21:482
219463099107102,2cyclictest141rcu_preempt23:52:292
2194630991041,1cyclictest141rcu_preempt21:37:442
2194101210490,9sleep60-21swapper/619:05:546
219463799102100,2cyclictest553-21snmpd23:11:174
21946329910299,3cyclictest553-21snmpd22:57:583
21946329910299,3cyclictest553-21snmpd21:12:153
2194630991022,1cyclictest31-21ksoftirqd/222:19:032
2194630991021,100cyclictest2463100-21kworker/2:000:35:272
219463099102101,1cyclictest2215667-21kworker/2:222:14:152
219463099102100,0cyclictest31-21ksoftirqd/223:57:192
21946269910299,3cyclictest553-21snmpd21:34:101
21946269910299,3cyclictest553-21snmpd21:03:331
2194650991010,99cyclictest0-21swapper/700:17:137
2194650991010,100cyclictest0-21swapper/721:06:137
2194650991010,100cyclictest0-21swapper/700:20:057
2194650991010,0cyclictest0-21swapper/723:18:157
21946469910199,2cyclictest553-21snmpd21:24:216
2194646991010,100cyclictest0-21swapper/622:45:586
21946409910199,1cyclictest553-21snmpd22:16:185
219464099101100,1cyclictest553-21snmpd00:17:565
2194640991010,100cyclictest0-21swapper/520:56:185
2194640991010,100cyclictest0-21swapper/519:29:285
21946379910199,2cyclictest553-21snmpd21:36:584
21946379910199,2cyclictest553-21snmpd00:04:434
2194637991010,100cyclictest0-21swapper/421:55:164
21946329910199,2cyclictest553-21snmpd22:09:173
21946329910199,2cyclictest553-21snmpd00:19:563
21946329910198,3cyclictest553-21snmpd21:51:263
21946329910198,2cyclictest553-21snmpd22:28:123
2194630991011,1cyclictest2215667-21kworker/2:221:44:432
2194630991011,100cyclictest311ksoftirqd/222:33:252
2194630991011,100cyclictest2215667-21kworker/2:223:08:072
2194630991011,100cyclictest2215667-21kworker/2:222:01:242
2194630991011,100cyclictest2215667-21kworker/2:221:30:542
219463099101100,1cyclictest2215667-21kworker/2:223:28:292
219463099101100,1cyclictest2215667-21kworker/2:222:22:382
2194630991010,100cyclictest2463100-21kworker/2:000:32:452
2194630991010,100cyclictest2215667-21kworker/2:223:41:542
2194630991010,100cyclictest2215667-21kworker/2:223:23:052
2194630991010,100cyclictest2215667-21kworker/2:222:56:052
2194630991010,100cyclictest2215667-21kworker/2:221:23:272
2194630991010,100cyclictest0-21swapper/222:25:242
21946269910199,2cyclictest553-21snmpd22:03:081
21946269910199,2cyclictest553-21snmpd20:49:181
21946269910199,2cyclictest553-21snmpd00:08:461
2194626991010,101cyclictest0-21swapper/121:18:011
2194626991010,101cyclictest0-21swapper/100:12:111
2194626991010,100cyclictest0-21swapper/123:19:061
2194626991010,100cyclictest0-21swapper/122:51:521
21946219910199,2cyclictest553-21snmpd21:20:250
219462199101100,1cyclictest553-21snmpd00:34:440
2194621991010,100cyclictest0-21swapper/000:29:410
2194621991010,100cyclictest0-21swapper/000:29:400
2194650991000,99cyclictest0-21swapper/723:08:497
2194650991000,99cyclictest0-21swapper/721:41:017
2194650991000,100cyclictest0-21swapper/723:50:127
2194650991000,100cyclictest0-21swapper/721:20:517
21946469910099,1cyclictest553-21snmpd23:14:026
21946469910099,1cyclictest553-21snmpd20:28:506
21946469910099,1cyclictest553-21snmpd20:21:176
21946469910099,1cyclictest553-21snmpd00:30:346
21946469910099,1cyclictest553-21snmpd00:25:446
21946469910099,1cyclictest553-21snmpd00:25:436
21946469910099,1cyclictest2380738-21cat23:00:146
21946469910099,1cyclictest2228572-21kworker/6:021:10:436
21946469910098,2cyclictest2406246-21ssh23:23:356
21946469910098,1cyclictest2163765-21kworker/6:120:05:146
2194646991000,99cyclictest0-21swapper/620:55:566
2194646991000,99cyclictest0-21swapper/600:15:016
2194646991000,100cyclictest0-21swapper/623:36:426
2194646991000,100cyclictest0-21swapper/622:23:496
21946409910099,1cyclictest553-21snmpd23:42:355
21946409910099,1cyclictest553-21snmpd23:32:545
21946409910099,1cyclictest553-21snmpd22:06:265
21946409910099,1cyclictest553-21snmpd21:03:555
21946409910099,1cyclictest553-21snmpd20:44:275
21946409910099,1cyclictest553-21snmpd20:13:475
21946409910099,1cyclictest553-21snmpd19:31:165
21946409910098,2cyclictest553-21snmpd22:10:475
21946409910098,2cyclictest553-21snmpd00:39:275
21946409910097,2cyclictest2460440-21ssh00:11:065
2194640991000,99cyclictest0-21swapper/521:25:135
2194640991000,99cyclictest0-21swapper/520:29:355
2194640991000,99cyclictest0-21swapper/520:21:135
21946379910099,1cyclictest553-21snmpd23:40:204
21946379910099,1cyclictest553-21snmpd21:00:164
21946379910099,1cyclictest553-21snmpd20:39:184
21946379910099,1cyclictest553-21snmpd00:16:234
2194637991000,99cyclictest0-21swapper/423:54:494
2194637991000,99cyclictest0-21swapper/422:27:304
2194637991000,99cyclictest0-21swapper/422:07:594
2194637991000,100cyclictest0-21swapper/423:27:514
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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