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2026-06-23 - 13:11

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 Tue Jun 23, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
229205099120119,1cyclictest2291926-21kworker/6:122:14:256
2291556211991,23sleep30-21swapper/319:06:403
2291550211990,9sleep60-21swapper/619:06:356
229205099117116,1cyclictest2291926-21kworker/6:121:33:426
2291575211599,10sleep20-21swapper/219:06:552
2291507211398,10sleep10-21swapper/119:05:581
2291760211298,9sleep00-21swapper/019:09:320
2291522211298,9sleep50-21swapper/519:06:105
2291539210692,9sleep40-21swapper/419:06:254
2292054991030,100cyclictest0-21swapper/723:30:407
2292031991030,100cyclictest0-21swapper/123:19:221
2291477210389,9sleep70-21swapper/719:05:307
2292054991020,100cyclictest0-21swapper/723:07:317
22920359910299,3cyclictest553-21snmpd23:01:372
2292035991020,102cyclictest0-21swapper/221:25:002
2292031991020,0cyclictest0-21swapper/100:15:151
2292054991010,0cyclictest0-21swapper/720:22:257
22920509910199,2cyclictest553-21snmpd20:02:466
22920509910198,2cyclictest553-21snmpd22:37:246
22920469910199,2cyclictest553-21snmpd22:52:215
2292046991010,100cyclictest0-21swapper/522:48:425
22920439910199,2cyclictest553-21snmpd21:32:544
2292043991010,100cyclictest0-21swapper/423:27:434
22920409910199,2cyclictest553-21snmpd20:57:443
22920409910198,3cyclictest553-21snmpd22:58:463
22920409910196,4cyclictest553-21snmpd23:29:523
22920359910199,2cyclictest553-21snmpd19:59:432
22920359910199,2cyclictest0-21swapper/222:05:142
2292035991010,99cyclictest0-21swapper/200:29:142
2292035991010,101cyclictest0-21swapper/221:20:062
2292035991010,100cyclictest0-21swapper/222:30:152
22920319910199,2cyclictest553-21snmpd22:40:321
22920319910199,2cyclictest553-21snmpd00:09:221
22920319910199,2cyclictest553-21snmpd00:02:401
22920319910199,1cyclictest553-21snmpd19:30:031
22920319910198,3cyclictest553-21snmpd22:48:221
2292031991010,100cyclictest0-21swapper/121:15:141
2292031991010,100cyclictest0-21swapper/120:02:241
22920269910199,2cyclictest553-21snmpd22:35:320
22920269910199,2cyclictest0-21swapper/020:44:210
2292026991010,100cyclictest0-21swapper/023:33:580
2292026991010,100cyclictest0-21swapper/021:49:430
22920549910099,1cyclictest0-21swapper/723:17:047
2292054991000,99cyclictest0-21swapper/720:10:077
2292054991000,100cyclictest0-21swapper/722:45:367
2292054991000,100cyclictest0-21swapper/722:24:277
2292054991000,100cyclictest0-21swapper/720:52:457
2292054991000,100cyclictest0-21swapper/719:33:237
22920509910099,1cyclictest553-21snmpd23:35:236
22920509910099,1cyclictest553-21snmpd20:37:386
22920509910099,1cyclictest553-21snmpd00:31:006
22920509910099,1cyclictest553-21snmpd00:16:026
22920509910099,1cyclictest2460410-21kworker/6:023:01:556
22920509910099,1cyclictest2389057-21cat21:40:146
22920509910099,1cyclictest2291926-21kworker/6:121:23:196
2292050991000,99cyclictest0-21swapper/623:29:006
2292050991000,99cyclictest0-21swapper/623:11:226
2292050991000,99cyclictest0-21swapper/600:38:236
2292050991000,100cyclictest0-21swapper/623:18:456
22920469910099,1cyclictest553-21snmpd22:10:145
22920469910099,1cyclictest553-21snmpd21:35:435
22920469910099,1cyclictest553-21snmpd21:34:485
22920469910099,1cyclictest553-21snmpd21:13:405
22920469910099,1cyclictest553-21snmpd20:47:425
22920469910099,1cyclictest553-21snmpd20:15:315
2292046991000,99cyclictest0-21swapper/522:21:415
2292046991000,99cyclictest0-21swapper/520:52:545
2292046991000,100cyclictest0-21swapper/519:40:005
22920439910099,1cyclictest553-21snmpd20:45:454
22920439910099,1cyclictest553-21snmpd19:49:124
2292043991000,99cyclictest0-21swapper/422:37:334
2292043991000,99cyclictest0-21swapper/421:19:494
2292043991000,100cyclictest0-21swapper/422:43:454
2292043991000,100cyclictest0-21swapper/422:10:164
2292043991000,100cyclictest0-21swapper/421:06:574
22920409910099,1cyclictest553-21snmpd20:51:363
22920409910099,1cyclictest553-21snmpd20:26:263
22920409910099,1cyclictest553-21snmpd20:00:273
22920409910098,2cyclictest553-21snmpd23:50:173
22920409910098,2cyclictest553-21snmpd23:13:093
22920409910097,3cyclictest553-21snmpd23:42:223
22920409910097,3cyclictest553-21snmpd20:08:163
22920359910099,1cyclictest553-21snmpd22:52:012
22920359910099,1cyclictest553-21snmpd20:27:432
22920359910097,3cyclictest553-21snmpd22:40:532
2292035991000,100cyclictest0-21swapper/223:38:132
2292035991000,100cyclictest0-21swapper/220:48:542
22920319910099,1cyclictest553-21snmpd19:23:031
22920319910099,1cyclictest0-21swapper/123:20:521
22920319910098,2cyclictest553-21snmpd22:51:431
22920319910098,2cyclictest553-21snmpd21:56:081
22920319910097,3cyclictest553-21snmpd22:28:481
22920319910097,3cyclictest553-21snmpd21:51:221
22920319910097,3cyclictest553-21snmpd20:41:481
2292031991000,99cyclictest0-21swapper/121:27:241
2292031991000,99cyclictest0-21swapper/100:13:381
2292031991000,100cyclictest0-21swapper/123:46:501
2292031991000,100cyclictest0-21swapper/122:15:431
2292031991000,100cyclictest0-21swapper/121:44:251
2292031991000,100cyclictest0-21swapper/120:58:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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