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2026-06-23 - 21:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Tue Jun 23, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20309211089,16sleep00-21swapper/007:07:170
20260210998,6sleep10-21swapper/107:06:381
19749210796,6sleep30-21swapper/307:05:273
20286210688,12sleep20-21swapper/207:06:592
72872830,0sleep00-21swapper/009:47:180
137332790,1sleep2301ktimersoftd/211:05:162
251592750,0sleep10-21swapper/112:28:321
193212740,0sleep20-21swapper/211:11:052
276782730,1sleep3381ktimersoftd/310:10:143
20554992410,13cyclictest0-21swapper/110:00:121
14512240,1sleep229-21rcuc/210:52:262
20554992319,2cyclictest12742-21ssh12:15:101
161312230,0sleep00-21swapper/012:18:370
275702220,1sleep12055499cyclictest10:45:181
2055699211,2cyclictest0-21swapper/312:15:113
2055699211,18cyclictest17478-21cat10:35:003
2055599201,2cyclictest28833-21kworker/u8:211:32:042
2055699190,2cyclictest0-21swapper/312:05:583
2055699190,2cyclictest0-21swapper/311:28:133
2055699190,17cyclictest0-21swapper/312:11:163
20555991916,2cyclictest17747-21kworker/u8:210:38:042
2055699181,9cyclictest731650ssh11:34:083
2055699180,2cyclictest0-21swapper/312:36:023
2055699180,2cyclictest0-21swapper/311:50:593
2055699180,2cyclictest0-21swapper/311:41:433
2055699180,2cyclictest0-21swapper/311:17:313
2055699180,2cyclictest0-21swapper/310:55:223
2055699180,2cyclictest0-21swapper/310:50:193
2055699180,2cyclictest0-21swapper/310:35:543
2055699180,2cyclictest0-21swapper/310:28:553
2055699180,2cyclictest0-21swapper/310:28:543
2055699180,2cyclictest0-21swapper/310:20:023
2055699180,2cyclictest0-21swapper/310:20:023
2055699180,2cyclictest0-21swapper/310:15:303
2055699180,2cyclictest0-21swapper/310:07:183
2055699180,2cyclictest0-21swapper/310:01:263
2055699180,2cyclictest0-21swapper/309:47:473
2055699180,2cyclictest0-21swapper/309:40:143
2055699180,2cyclictest0-21swapper/309:32:583
2055699180,2cyclictest0-21swapper/309:26:143
2055699180,2cyclictest0-21swapper/309:20:473
2055699180,2cyclictest0-21swapper/309:11:023
2055699180,2cyclictest0-21swapper/309:05:103
2055699180,2cyclictest0-21swapper/309:03:383
2055699180,17cyclictest0-21swapper/311:35:023
2055699180,16cyclictest0-21swapper/310:47:023
2055699180,16cyclictest0-21swapper/309:57:023
2055699180,11cyclictest0-21swapper/309:35:183
20555991815,2cyclictest27491-21kworker/u8:110:14:052
20555991815,2cyclictest2448-21kworker/u8:109:42:012
20555991815,2cyclictest11150-21kworker/u8:111:42:052
20553991814,3cyclictest2899-21kworker/u8:011:32:050
2055699170,2cyclictest0-21swapper/312:26:063
2055699170,2cyclictest0-21swapper/312:20:463
2055699170,2cyclictest0-21swapper/312:00:063
2055699170,2cyclictest0-21swapper/311:55:543
2055699170,2cyclictest0-21swapper/311:45:183
2055699170,2cyclictest0-21swapper/311:20:543
2055699170,2cyclictest0-21swapper/311:09:103
2055699170,2cyclictest0-21swapper/311:00:113
2055699170,2cyclictest0-21swapper/310:41:503
2055699170,2cyclictest0-21swapper/309:50:293
2055699170,2cyclictest0-21swapper/309:17:223
2055699170,2cyclictest0-21swapper/308:15:183
2055699170,2cyclictest0-21swapper/308:00:103
2055699170,2cyclictest0-21swapper/307:40:113
2055699170,2cyclictest0-21swapper/307:34:593
2055699170,1cyclictest19350-21ssh11:11:063
2055699170,15cyclictest0-21swapper/312:30:023
20555991714,2cyclictest10680-21kworker/u8:112:12:052
2055699160,2cyclictest0-21swapper/308:55:153
2055699160,2cyclictest0-21swapper/308:50:423
2055699160,2cyclictest0-21swapper/308:46:463
2055699160,2cyclictest0-21swapper/308:40:303
2055699160,2cyclictest0-21swapper/308:36:023
2055699160,2cyclictest0-21swapper/308:30:113
2055699160,2cyclictest0-21swapper/308:26:383
2055699160,2cyclictest0-21swapper/308:20:183
2055699160,2cyclictest0-21swapper/308:10:143
2055699160,2cyclictest0-21swapper/308:05:233
2055699160,2cyclictest0-21swapper/307:58:273
2055699160,2cyclictest0-21swapper/307:51:063
2055699160,2cyclictest0-21swapper/307:45:143
2055699160,2cyclictest0-21swapper/307:36:063
2055699160,2cyclictest0-21swapper/307:25:103
2055699160,2cyclictest0-21swapper/307:10:023
20555991613,2cyclictest6288-21kworker/u8:109:33:042
20555991613,2cyclictest29291-21kworker/u8:209:37:052
20555991613,2cyclictest25339-21kworker/u8:111:54:052
20555991613,2cyclictest22653-21kworker/u8:208:55:052
20555991613,2cyclictest17115-21kworker/u8:210:06:052
2055699150,2cyclictest0-21swapper/307:20:023
2055699150,2cyclictest0-21swapper/307:15:033
2055599151,3cyclictest7555-21iostat_ios07:55:162
2055599151,3cyclictest0-21swapper/211:00:152
20555991512,2cyclictest6288-21kworker/u8:109:24:062
20555991512,2cyclictest5683-21kworker/u8:212:15:042
20555991512,2cyclictest5683-21kworker/u8:212:07:052
20555991512,2cyclictest22332-21kworker/u8:010:58:052
20555991512,2cyclictest11150-21kworker/u8:111:39:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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