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2026-03-23 - 19:21

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 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 Mar 23, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12604592121106,9sleep50-21swapper/507:07:435
12604172120106,9sleep10-21swapper/107:07:081
12603862119104,10sleep60-21swapper/607:06:406
12604582117103,9sleep40-21swapper/407:07:424
12603542116100,10sleep30-21swapper/307:06:133
1260447211197,9sleep20-21swapper/207:07:332
1260322211197,9sleep70-21swapper/707:05:457
1260445210981,23sleep00-21swapper/007:07:310
1261035991020,100cyclictest0-21swapper/711:17:267
12610309910299,3cyclictest553-21snmpd12:14:596
12610309910299,3cyclictest553-21snmpd09:27:496
1261030991020,100cyclictest0-21swapper/609:15:596
12610269910299,3cyclictest553-21snmpd11:13:305
12610269910299,3cyclictest553-21snmpd11:08:145
12610269910299,3cyclictest553-21snmpd09:43:415
126100599102100,2cyclictest553-21snmpd11:04:321
1261005991020,100cyclictest0-21swapper/111:22:081
1261001991020,102cyclictest0-21swapper/012:10:130
1261001991020,0cyclictest0-21swapper/011:11:360
1261035991010,99cyclictest0-21swapper/712:02:407
1261035991010,99cyclictest0-21swapper/710:22:427
1261035991010,99cyclictest0-21swapper/709:31:497
1261035991010,0cyclictest0-21swapper/711:51:167
1261035991010,0cyclictest0-21swapper/711:21:157
12610309910197,3cyclictest553-21snmpd11:08:266
12610269910199,2cyclictest553-21snmpd08:29:265
12610269910199,2cyclictest0-21swapper/512:39:455
12610269910198,3cyclictest553-21snmpd08:04:045
1261026991010,99cyclictest0-21swapper/510:54:025
1261026991010,101cyclictest0-21swapper/512:20:135
1261026991010,101cyclictest0-21swapper/508:50:015
1261026991010,100cyclictest0-21swapper/509:51:005
1261026991010,0cyclictest0-21swapper/510:10:145
12610229910199,2cyclictest553-21snmpd12:28:414
12610229910199,2cyclictest553-21snmpd11:11:244
126102299101100,1cyclictest553-21snmpd07:53:504
1261022991010,100cyclictest0-21swapper/410:50:474
12610179910198,2cyclictest553-21snmpd11:23:363
126101799101100,1cyclictest553-21snmpd09:33:333
12610119910199,2cyclictest553-21snmpd12:25:202
12610119910199,1cyclictest553-21snmpd09:14:252
12610119910199,1cyclictest553-21snmpd07:11:272
1261011991010,100cyclictest0-21swapper/210:00:482
1261005991010,100cyclictest0-21swapper/108:30:211
12610019910199,2cyclictest553-21snmpd09:17:560
1261035991000,99cyclictest0-21swapper/711:02:547
1261035991000,99cyclictest0-21swapper/709:35:517
1261035991000,99cyclictest0-21swapper/708:08:167
1261035991000,100cyclictest0-21swapper/710:25:467
1261035991000,100cyclictest0-21swapper/709:50:507
1261035991000,100cyclictest0-21swapper/709:05:107
12610309910099,1cyclictest553-21snmpd11:36:486
12610309910099,1cyclictest553-21snmpd10:00:166
12610309910099,1cyclictest553-21snmpd08:55:036
12610309910099,1cyclictest553-21snmpd08:52:456
12610309910099,1cyclictest553-21snmpd08:18:246
12610309910099,1cyclictest553-21snmpd07:16:336
12610309910097,3cyclictest553-21snmpd12:05:436
12610309910097,3cyclictest553-21snmpd10:40:346
1261030991000,99cyclictest0-21swapper/611:50:466
1261030991000,99cyclictest0-21swapper/608:05:156
1261030991000,99cyclictest0-21swapper/607:50:156
12610269910099,1cyclictest553-21snmpd08:30:215
12610269910099,1cyclictest553-21snmpd07:41:285
12610269910099,1cyclictest553-21snmpd07:32:395
12610269910099,1cyclictest553-21snmpd07:26:345
12610269910099,1cyclictest553-21snmpd07:18:375
12610269910098,2cyclictest553-21snmpd12:11:235
12610269910097,3cyclictest553-21snmpd09:18:585
12610269910097,3cyclictest1419262-21cat10:35:165
1261026991000,99cyclictest0-21swapper/512:16:505
1261026991000,99cyclictest0-21swapper/510:43:135
1261026991000,100cyclictest0-21swapper/512:01:165
1261026991000,100cyclictest0-21swapper/511:55:405
1261026991000,100cyclictest0-21swapper/509:20:135
1261026991000,100cyclictest0-21swapper/509:09:265
12610229910099,1cyclictest553-21snmpd09:50:124
12610229910099,1cyclictest553-21snmpd08:43:584
12610229910099,1cyclictest553-21snmpd08:01:404
12610229910098,2cyclictest553-21snmpd11:42:584
12610229910098,2cyclictest553-21snmpd11:30:274
1261022991000,99cyclictest0-21swapper/409:41:504
1261022991000,99cyclictest0-21swapper/409:08:234
1261022991000,100cyclictest0-21swapper/411:08:024
12610179910099,1cyclictest553-21snmpd11:58:373
12610179910099,1cyclictest553-21snmpd11:49:163
12610179910099,1cyclictest553-21snmpd08:37:553
12610179910099,1cyclictest553-21snmpd08:21:023
12610179910099,1cyclictest553-21snmpd08:21:023
12610179910099,1cyclictest553-21snmpd08:07:563
12610179910099,1cyclictest553-21snmpd07:45:173
12610179910099,1cyclictest553-21snmpd07:13:093
12610179910098,2cyclictest553-21snmpd11:26:203
12610179910098,2cyclictest553-21snmpd07:42:523
12610179910098,2cyclictest553-21snmpd07:35:043
12610179910097,3cyclictest553-21snmpd07:33:363
12610179910097,2cyclictest553-21snmpd09:36:533
126101799100100,0cyclictest553-21snmpd09:21:503
12610119910099,1cyclictest553-21snmpd08:18:562
12610119910098,2cyclictest553-21snmpd10:07:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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