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2026-08-17 - 09:20

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 Aug 17, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
347400899127126,1cyclictest3653717-21kworker/6:222:59:496
34735912121106,10sleep30-21swapper/319:07:433
34735522116101,10sleep20-21swapper/219:07:102
3473437211499,10sleep70-21swapper/719:05:317
3473576211195,10sleep60-21swapper/619:07:306
3473505211095,10sleep10-21swapper/119:06:301
3473475210994,9sleep00-21swapper/019:06:050
3473731210793,9sleep40-21swapper/419:09:444
3473620210793,9sleep50-21swapper/519:08:095
34740089910299,2cyclictest3653717-21kworker/6:223:38:556
34740089910298,1cyclictest3653717-21kworker/6:223:20:076
34740019910299,3cyclictest553-21snmpd21:08:404
3473985991020,101cyclictest0-21swapper/023:14:180
34740139910199,2cyclictest0-21swapper/722:38:327
3474013991010,101cyclictest0-21swapper/700:19:317
3474013991010,100cyclictest0-21swapper/719:56:087
34740089910199,2cyclictest553-21snmpd00:25:346
34740089910199,2cyclictest3732005-21kworker/6:100:33:396
347400899101100,1cyclictest3732005-21kworker/6:100:38:476
347400899101100,1cyclictest3732005-21kworker/6:100:18:366
347400899101100,1cyclictest3732005-21kworker/6:100:05:516
347400899101100,1cyclictest3653717-21kworker/6:223:55:196
347400899101100,1cyclictest3653717-21kworker/6:223:45:096
347400899101100,1cyclictest3653717-21kworker/6:223:41:496
347400899101100,1cyclictest3653717-21kworker/6:223:32:116
347400899101100,1cyclictest3653717-21kworker/6:223:27:486
347400899101100,1cyclictest3653717-21kworker/6:223:11:256
347400899101100,1cyclictest3653717-21kworker/6:223:00:566
347400899101100,1cyclictest3653717-21kworker/6:200:01:296
347400899101100,1cyclictest3620003-21kworker/6:122:49:416
347400899101100,1cyclictest3620003-21kworker/6:122:43:236
347400899101100,1cyclictest3620003-21kworker/6:122:31:196
347400899101100,1cyclictest3620003-21kworker/6:122:29:496
347400899101100,1cyclictest3518351-21kworker/6:022:10:186
347400899101100,1cyclictest3518351-21kworker/6:021:53:396
347400899101100,1cyclictest3518351-21kworker/6:021:36:256
34740059910199,2cyclictest553-21snmpd23:06:145
34740059910199,2cyclictest553-21snmpd20:13:115
34740059910199,2cyclictest553-21snmpd19:20:315
34740059910198,2cyclictest553-21snmpd00:19:145
347400599101100,1cyclictest553-21snmpd22:49:195
3474005991010,99cyclictest0-21swapper/522:16:215
3474005991010,101cyclictest0-21swapper/523:24:225
3474005991010,100cyclictest0-21swapper/519:33:195
34740019910199,2cyclictest553-21snmpd23:12:594
34740019910199,2cyclictest553-21snmpd20:44:464
3474001991010,99cyclictest0-21swapper/420:13:474
3474001991010,0cyclictest0-21swapper/419:49:504
34739989910199,2cyclictest553-21snmpd22:45:493
34739989910199,2cyclictest553-21snmpd21:11:283
34739989910199,2cyclictest553-21snmpd00:01:553
347399899101100,1cyclictest553-21snmpd20:14:263
34739899910199,2cyclictest553-21snmpd22:47:411
34739899910199,2cyclictest553-21snmpd00:25:011
3473989991010,100cyclictest0-21swapper/123:50:161
3473989991010,100cyclictest0-21swapper/121:45:331
3473989991010,100cyclictest0-21swapper/120:30:451
3473985991010,101cyclictest0-21swapper/020:51:070
3473985991010,101cyclictest0-21swapper/020:27:180
3473985991010,100cyclictest0-21swapper/019:53:270
3474013991000,99cyclictest0-21swapper/722:27:197
3474013991000,99cyclictest0-21swapper/700:27:167
3474013991000,100cyclictest0-21swapper/722:59:147
3474013991000,100cyclictest0-21swapper/700:12:227
3474013991000,100cyclictest0-21swapper/700:02:047
3474013991000,0cyclictest0-21swapper/722:13:467
34740089910099,1cyclictest553-21snmpd19:43:026
34740089910099,1cyclictest553-21snmpd19:25:316
34740089910099,1cyclictest3732005-21kworker/6:100:20:156
34740089910099,1cyclictest3732005-21kworker/6:100:10:216
34740089910099,1cyclictest3653717-21kworker/6:223:50:226
34740089910099,1cyclictest3653717-21kworker/6:223:15:176
34740089910099,1cyclictest3653717-21kworker/6:223:05:036
34740089910099,1cyclictest3620003-21kworker/6:122:50:076
34740089910099,1cyclictest3620003-21kworker/6:122:35:186
34740089910099,1cyclictest3518351-21kworker/6:022:20:136
34740089910099,1cyclictest3518351-21kworker/6:022:15:436
34740089910099,1cyclictest3518351-21kworker/6:022:05:256
34740089910099,1cyclictest3518351-21kworker/6:022:00:496
34740089910099,1cyclictest3518351-21kworker/6:021:55:116
34740089910099,1cyclictest3518351-21kworker/6:021:45:426
34740089910099,1cyclictest3518351-21kworker/6:021:40:116
34740089910099,1cyclictest3518351-21kworker/6:021:30:056
34740089910099,1cyclictest3518351-21kworker/6:021:25:356
34740089910099,1cyclictest3518351-21kworker/6:021:20:046
34740089910099,1cyclictest3518351-21kworker/6:021:15:236
34740089910099,1cyclictest3518351-21kworker/6:021:10:516
34740089910099,1cyclictest3518351-21kworker/6:021:00:176
34740089910099,1cyclictest3518351-21kworker/6:020:50:116
34740089910099,1cyclictest3518351-21kworker/6:020:45:156
34740089910099,1cyclictest3463468-21kworker/6:120:30:166
34740089910099,1cyclictest3463468-21kworker/6:120:25:176
34740089910099,1cyclictest3463468-21kworker/6:120:00:216
34740089910099,1cyclictest3463468-21kworker/6:119:35:176
34740089910099,1cyclictest3463468-21kworker/6:119:20:196
34740089910099,1cyclictest3463468-21kworker/6:119:10:136
34740059910099,1cyclictest553-21snmpd21:53:365
34740059910099,1cyclictest553-21snmpd21:41:145
34740059910099,1cyclictest553-21snmpd19:44:165
34740059910099,1cyclictest553-21snmpd19:38:295
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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