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2026-09-07 - 14:01

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 Mon Sep 07, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29596332130116,9sleep30-21swapper/319:08:223
29597082124110,9sleep40-21swapper/419:09:274
29594732117102,10sleep20-21swapper/219:06:062
2959442211586,9sleep00-21swapper/019:05:400
2959723211398,10sleep10-21swapper/119:09:411
2959449211399,9sleep70-21swapper/719:05:477
2959533211195,10sleep60-21swapper/619:06:586
2959514211197,9sleep50-21swapper/519:06:415
295998099105100,1cyclictest141rcu_preempt22:35:362
2959976991050,103cyclictest0-21swapper/121:20:191
2959980991040,1cyclictest31-21ksoftirqd/223:31:362
295998099103101,2cyclictest3011252-21kworker/2:121:37:302
2959995991020,102cyclictest0-21swapper/619:55:166
29599809910299,3cyclictest31-21ksoftirqd/223:57:122
29599809910299,1cyclictest31-21ksoftirqd/221:16:382
295998099102101,1cyclictest3115812-21kworker/2:223:40:112
295998099102100,2cyclictest31-21ksoftirqd/222:19:522
2959980991020,100cyclictest31-21ksoftirqd/223:20:122
2959980991020,100cyclictest301rcuc/222:44:362
2959980991020,100cyclictest2994937-21sort20:15:162
29599719910299,3cyclictest553-21snmpd23:47:180
29599719910299,3cyclictest553-21snmpd23:22:500
29599719910299,3cyclictest553-21snmpd00:10:450
2959971991020,100cyclictest0-21swapper/020:46:570
29599959910199,2cyclictest553-21snmpd23:08:436
29599959910198,3cyclictest553-21snmpd23:27:196
29599959910198,3cyclictest553-21snmpd20:23:346
29599959910198,3cyclictest553-21snmpd00:17:276
29599959910195,3cyclictest553-21snmpd22:09:196
295999599101100,1cyclictest553-21snmpd22:14:516
295999599101100,1cyclictest553-21snmpd20:56:276
2959995991010,100cyclictest0-21swapper/623:45:136
29599879910199,2cyclictest553-21snmpd22:34:414
295998799101100,1cyclictest0-21swapper/423:23:014
29599839910199,2cyclictest553-21snmpd23:16:043
29599839910199,2cyclictest553-21snmpd22:15:033
29599809910199,2cyclictest3231698-21kworker/2:000:33:302
29599809910199,2cyclictest0-21swapper/222:48:592
29599809910199,2cyclictest0-21swapper/221:55:372
29599809910199,2cyclictest0-21swapper/221:44:162
29599809910199,2cyclictest0-21swapper/200:24:482
29599809910199,0cyclictest0-21swapper/221:45:402
295998099101100,1cyclictest31-21ksoftirqd/223:15:312
295998099101100,1cyclictest0-21swapper/223:01:462
295998099101100,1cyclictest0-21swapper/222:53:522
295998099101100,1cyclictest0-21swapper/220:30:162
295998099101100,1cyclictest0-21swapper/200:11:142
2959980991010,99cyclictest3115812-21kworker/2:223:35:132
2959980991010,101cyclictest3115812-21kworker/2:223:47:162
2959980991010,100cyclictest3115812-21kworker/2:200:15:222
2959980991010,100cyclictest3011252-21kworker/2:121:34:432
2959980991010,100cyclictest0-21swapper/219:21:332
2959976991010,99cyclictest0-21swapper/123:28:531
2959976991010,100cyclictest3126471-21ssh22:44:371
29599719910199,2cyclictest553-21snmpd19:27:560
29599719910198,3cyclictest553-21snmpd20:11:530
295997199101100,1cyclictest553-21snmpd21:27:510
2959971991010,101cyclictest0-21swapper/022:08:380
2959971991010,100cyclictest0-21swapper/021:58:290
2959999991000,99cyclictest0-21swapper/722:47:047
2959999991000,99cyclictest0-21swapper/719:57:227
2959999991000,99cyclictest0-21swapper/719:16:327
2959999991000,100cyclictest0-21swapper/722:51:527
2959999991000,100cyclictest0-21swapper/719:35:587
29599959910099,1cyclictest553-21snmpd21:03:156
29599959910098,2cyclictest553-21snmpd23:00:286
29599959910098,2cyclictest553-21snmpd22:04:206
29599959910097,3cyclictest553-21snmpd22:38:506
2959995991000,99cyclictest0-21swapper/619:33:276
2959995991000,96cyclictest0-21swapper/620:36:546
2959995991000,100cyclictest0-21swapper/619:52:346
2959995991000,100cyclictest0-21swapper/619:45:106
29599919910099,1cyclictest553-21snmpd23:56:575
29599919910099,1cyclictest553-21snmpd22:47:585
29599919910099,1cyclictest553-21snmpd22:06:585
29599919910099,1cyclictest553-21snmpd20:11:235
29599919910099,1cyclictest553-21snmpd19:25:425
295999199100100,0cyclictest0-21swapper/523:09:495
2959991991000,100cyclictest0-21swapper/523:50:165
2959991991000,100cyclictest0-21swapper/521:49:535
2959991991000,100cyclictest0-21swapper/521:05:155
2959991991000,100cyclictest0-21swapper/519:30:155
29599879910099,1cyclictest553-21snmpd23:26:324
29599879910099,1cyclictest553-21snmpd21:33:094
29599879910099,1cyclictest553-21snmpd20:54:004
29599879910099,1cyclictest553-21snmpd20:48:394
29599879910099,1cyclictest553-21snmpd19:18:364
29599879910099,1cyclictest553-21snmpd00:30:424
29599879910099,1cyclictest553-21snmpd00:12:364
29599879910099,1cyclictest3133625-21cat22:50:174
29599879910098,2cyclictest553-21snmpd23:53:484
2959987991000,99cyclictest0-21swapper/419:47:584
2959987991000,99cyclictest0-21swapper/419:25:454
2959987991000,100cyclictest0-21swapper/421:53:114
2959987991000,100cyclictest0-21swapper/400:01:274
29599839910099,1cyclictest553-21snmpd22:46:153
29599839910099,1cyclictest553-21snmpd21:37:223
29599839910099,1cyclictest553-21snmpd21:33:003
29599839910099,1cyclictest553-21snmpd19:36:073
29599839910099,1cyclictest553-21snmpd19:13:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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