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2026-03-24 - 23:24

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 Mar 24, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
90802116105,6sleep00-21swapper/007:08:070
9087211594,16sleep20-21swapper/207:08:132
9004211396,12sleep10-21swapper/107:07:081
90282111100,6sleep30-21swapper/307:07:263
53802790,0sleep20-21swapper/210:29:442
11442730,5sleep2925699cyclictest09:51:012
192562660,1sleep00-21swapper/007:34:030
112992320,0sleep30-21swapper/312:15:593
925799220,21cyclictest0-21swapper/311:45:013
294992220,0sleep30-21swapper/309:13:423
224542200,1sleep20-21swapper/210:46:242
9256991916,2cyclictest6059-21kworker/u8:110:31:042
9256991916,2cyclictest2775-21kworker/u8:012:18:052
322262190,0sleep20-21swapper/212:05:002
9256991815,2cyclictest2992-21kworker/u8:209:22:042
9256991815,2cyclictest25200-21kworker/u8:209:44:012
9256991815,2cyclictest25200-21kworker/u8:209:44:012
925599171,14cyclictest207150irq/24-eth107:15:111
9254991714,2cyclictest13542-21kworker/u8:211:15:040
9256991613,2cyclictest8051-21kworker/u8:011:52:042
925599161,13cyclictest25931-21munin-node1
925599161,13cyclictest0-21swapper/112:35:111
925599161,13cyclictest0-21swapper/107:55:141
115142160,0sleep20-21swapper/211:09:442
925799151,12cyclictest16851-21ssh10:07:123
925799150,13cyclictest0-21swapper/312:14:583
925699152,9cyclictest0-21swapper/209:56:012
925699151,3cyclictest21368-21ssh10:11:452
9256991512,2cyclictest868-21kworker/u8:208:20:052
9256991512,2cyclictest29424-21kworker/u8:009:37:042
9256991512,2cyclictest17277-21kworker/u8:109:46:042
9256991512,2cyclictest17141-21kworker/u8:312:26:052
925699151,12cyclictest0-21swapper/211:30:002
925699150,2cyclictest0-21swapper/210:55:042
925599151,2cyclictest15696-21apt-get08:45:111
925599150,3cyclictest0-21swapper/110:15:181
925599150,13cyclictest25538-21diskmemload10:52:381
925599150,13cyclictest22475-21tail07:40:161
9254991512,2cyclictest0-21swapper/012:37:260
13222151,3sleep01557-21users09:51:030
925799141,2cyclictest735-21iostat12:05:153
9257991411,2cyclictest0-21swapper/311:51:183
9257991411,2cyclictest0-21swapper/310:17:503
9257991411,2cyclictest0-21swapper/310:04:493
9257991411,2cyclictest0-21swapper/309:25:483
9257991410,2cyclictest0-21swapper/308:35:193
925799140,3cyclictest31140-21sh12:03:233
925799140,2cyclictest0-21swapper/310:50:383
925799140,2cyclictest0-21swapper/310:21:183
925799140,13cyclictest0-21swapper/312:35:083
925799140,13cyclictest0-21swapper/312:20:383
925799140,13cyclictest0-21swapper/310:47:583
925799140,13cyclictest0-21swapper/310:25:183
925799140,13cyclictest0-21swapper/309:35:183
925799140,12cyclictest22885-21ssh12:28:293
925799140,12cyclictest13491-21modprobe09:30:153
925799140,12cyclictest0-21swapper/311:14:063
925799140,12cyclictest0-21swapper/311:06:043
925799140,12cyclictest0-21swapper/310:31:103
925799140,12cyclictest0-21swapper/309:57:083
9256991411,2cyclictest28782sleep211:34:352
9256991411,2cyclictest23434-21kworker/u8:209:13:042
9256991411,2cyclictest17277-21kworker/u8:110:08:052
9256991411,2cyclictest17277-21kworker/u8:110:01:042
9256991411,2cyclictest13660-21kworker/u8:010:41:042
925699140,12cyclictest0-21swapper/212:20:132
925599142,7cyclictest0-21swapper/107:35:011
925599141,2cyclictest2231-21apt-get11:00:121
9255991410,2cyclictest0-21swapper/111:41:481
925599140,3cyclictest0-21swapper/107:30:161
925599140,13cyclictest0-21swapper/112:00:181
925599140,13cyclictest0-21swapper/111:45:001
925599140,13cyclictest0-21swapper/109:21:371
925599140,12cyclictest29896-21ssh09:47:051
9254991411,2cyclictest17277-21kworker/u8:109:56:010
9254991411,2cyclictest0-21swapper/012:08:060
9254991411,2cyclictest0-21swapper/009:22:570
925499140,2cyclictest0-21swapper/010:47:060
925499140,2cyclictest0-21swapper/009:32:360
925499140,13cyclictest0-21swapper/012:25:160
135352140,2sleep013545-21ssh12:18:540
95502130,2sleep10-21swapper/111:06:401
93492130,2sleep20-21swapper/211:40:162
925799139,2cyclictest27642-21ssh11:25:353
925799132,7cyclictest0-21swapper/307:37:583
9257991310,2cyclictest28708-21ssh09:45:513
9257991310,2cyclictest25538-21diskmemload10:35:023
9257991310,2cyclictest0-21swapper/311:16:143
9257991310,2cyclictest0-21swapper/310:55:013
9257991310,2cyclictest0-21swapper/310:40:293
9257991310,2cyclictest0-21swapper/310:13:033
9257991310,2cyclictest0-21swapper/309:52:373
925799130,2cyclictest2226-21munin-node3
925799130,2cyclictest18121-21hddtemp_smartct07:30:143
925799130,2cyclictest0-21swapper/312:32:343
925799130,2cyclictest0-21swapper/309:41:193
925799130,2cyclictest0-21swapper/309:41:193
925799130,2cyclictest0-21swapper/309:20:153
925799130,2cyclictest0-21swapper/308:45:123
925799130,12cyclictest0-21swapper/311:59:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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