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2026-04-20 - 23:48

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 Apr 20, 2026 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
372810899127126,1cyclictest3933733-21kworker/6:211:25:436
37277052124110,9sleep30-21swapper/307:07:493
3725745212498,21sleep20-21swapper/207:05:082
37275822121106,10sleep10-21swapper/107:06:031
372810899120119,1cyclictest3839745-21kworker/6:110:33:156
372810899116115,1cyclictest3944789-21kworker/6:011:52:176
37277162115100,10sleep50-21swapper/507:07:595
37276972115101,9sleep40-21swapper/407:07:424
3727812211499,10sleep70-21swapper/707:09:227
37276162114100,9sleep60-21swapper/607:06:326
3727545211399,9sleep00-21swapper/007:05:300
3728092991061,102cyclictest141rcu_preempt10:59:092
3728092991051,100cyclictest141rcu_preempt12:05:412
3728092991050,102cyclictest3817724-21kworker/2:109:56:252
3728092991031,99cyclictest141rcu_preempt08:39:352
3728092991030,1cyclictest3817724-21kworker/2:109:50:192
3728092991030,1cyclictest31-21ksoftirqd/212:16:132
3728092991030,101cyclictest141rcu_preempt10:45:092
372808999103100,3cyclictest553-21snmpd08:58:421
372808999103100,3cyclictest553-21snmpd08:58:421
37281009910299,3cyclictest553-21snmpd09:50:364
3728100991020,101cyclictest0-21swapper/409:27:374
3728092991022,1cyclictest31-21ksoftirqd/210:03:392
3728092991022,100cyclictest31-21ksoftirqd/211:07:472
3728092991021,99cyclictest141rcu_preempt09:11:152
3728092991021,100cyclictest3872814-21kworker/2:110:36:592
3728092991021,100cyclictest3817724-21kworker/2:110:05:432
3728092991021,100cyclictest3689285-21kworker/2:009:17:202
3728092991021,100cyclictest31-21ksoftirqd/209:40:152
3728092991020,1cyclictest3856325-21kworker/2:210:23:292
3728092991020,0cyclictest141rcu_preempt12:03:252
3728092991020,0cyclictest141rcu_preempt10:41:082
3728092991020,0cyclictest141rcu_preempt08:20:172
3728092991020,0cyclictest141rcu_preempt07:25:152
3728089991020,102cyclictest0-21swapper/112:08:101
3728089991020,101cyclictest0-21swapper/110:07:361
3728108991010,1cyclictest0-21swapper/609:28:136
372810399101100,1cyclictest553-21snmpd11:05:055
372810399101100,1cyclictest553-21snmpd08:50:095
3728103991010,100cyclictest0-21swapper/508:37:185
37281009910198,3cyclictest553-21snmpd12:30:284
37281009910198,3cyclictest553-21snmpd11:35:364
37281009910198,2cyclictest605-21lldpd08:23:214
3728100991010,99cyclictest0-21swapper/409:46:294
3728100991010,100cyclictest0-21swapper/411:28:294
3728100991010,0cyclictest0-21swapper/409:41:024
37280959910199,2cyclictest570-21ntpd12:36:573
37280959910199,2cyclictest553-21snmpd10:55:373
37280959910199,1cyclictest553-21snmpd12:07:023
37280929910199,2cyclictest553-21snmpd11:52:362
3728092991011,1cyclictest3689285-21kworker/2:007:30:192
3728092991011,1cyclictest31-21ksoftirqd/211:00:132
3728092991011,100cyclictest3817724-21kworker/2:109:45:262
3728092991011,100cyclictest3689285-21kworker/2:009:20:052
3728092991011,100cyclictest31-21ksoftirqd/211:21:592
3728092991011,100cyclictest31-21ksoftirqd/210:16:352
3728092991011,100cyclictest31-21ksoftirqd/209:28:312
372809299101101,0cyclictest0-21swapper/212:22:352
372809299101100,1cyclictest3926052-21diskmemload11:12:202
372809299101100,1cyclictest3872814-21kworker/2:111:38:032
372809299101100,1cyclictest3689285-21kworker/2:007:35:012
372809299101100,1cyclictest0-21swapper/212:13:572
3728092991010,101cyclictest3872814-21kworker/2:111:33:152
3728092991010,100cyclictest3872814-21kworker/2:110:50:192
3728092991010,100cyclictest3817724-21kworker/2:109:35:432
3728092991010,100cyclictest3689285-21kworker/2:008:25:192
3728092991010,100cyclictest141rcu_preempt11:40:282
3728092991010,100cyclictest0-21swapper/211:25:142
3728092991010,0cyclictest141rcu_preempt10:32:072
37280899910198,3cyclictest553-21snmpd12:26:591
3728089991010,101cyclictest0-21swapper/108:34:141
3728089991010,0cyclictest0-21swapper/110:28:481
3728089991010,0cyclictest0-21swapper/109:05:301
37280849910199,2cyclictest553-21snmpd12:26:220
3728112991000,99cyclictest0-21swapper/709:25:137
3728112991000,99cyclictest0-21swapper/708:11:287
3728112991000,99cyclictest0-21swapper/707:36:547
3728112991000,100cyclictest0-21swapper/710:50:437
3728112991000,100cyclictest0-21swapper/710:12:547
37281089910099,1cyclictest553-21snmpd11:59:216
37281089910099,1cyclictest553-21snmpd11:31:426
37281089910099,1cyclictest553-21snmpd10:38:316
37281089910099,1cyclictest553-21snmpd09:23:196
37281089910099,1cyclictest553-21snmpd08:25:146
37281089910099,1cyclictest3944789-21kworker/6:012:14:056
372810899100100,0cyclictest553-21snmpd11:42:396
3728108991000,99cyclictest3838353-21ssh09:53:026
3728108991000,99cyclictest0-21swapper/607:45:486
3728108991000,99cyclictest0-21swapper/607:43:546
3728108991000,99cyclictest0-21swapper/607:14:506
3728108991000,100cyclictest0-21swapper/609:36:316
3728108991000,100cyclictest0-21swapper/608:47:006
3728108991000,100cyclictest0-21swapper/607:17:206
37281039910099,1cyclictest553-21snmpd10:49:135
37281039910099,1cyclictest553-21snmpd09:02:545
37281039910099,1cyclictest553-21snmpd08:40:205
37281039910099,1cyclictest553-21snmpd08:33:385
37281039910099,1cyclictest553-21snmpd07:25:155
3728103991000,100cyclictest0-21swapper/509:35:345
37281009910099,1cyclictest553-21snmpd09:32:434
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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