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2025-12-31 - 21:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, 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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  Intel
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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 rack1slot6s.osadl.org (updated Wed Dec 31, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1409521010,7sleep1201ktimersoftd/112:18:101
1835099996,27cyclictest21396-21unixbench_singl10:18:120
1835599974,42cyclictest0-21swapper/207:58:062
1835099954,29cyclictest0-21swapper/009:33:060
1835599943,45cyclictest0-21swapper/209:33:132
1835099924,29cyclictest0-21swapper/009:08:060
1835099924,28cyclictest0-21swapper/012:07:520
1835099914,30cyclictest0-21swapper/011:02:370
1835099913,29cyclictest0-21swapper/007:13:210
1835099904,39cyclictest0-21swapper/008:12:570
1835599893,40cyclictest22030-21munin-node10:23:052
1835099864,28cyclictest0-21swapper/011:42:500
1835099864,28cyclictest0-21swapper/010:53:050
1835099854,29cyclictest0-21swapper/010:08:110
1835099844,27cyclictest0-21swapper/010:22:510
1835099834,29cyclictest0-21swapper/011:33:040
1835099834,28cyclictest0-21swapper/011:57:570
1835099814,39cyclictest0-21swapper/011:12:500
1835499665,13cyclictest0-21swapper/108:33:151
1835499665,13cyclictest0-21swapper/108:33:151
1835499664,54cyclictest0-21swapper/110:02:571
1835099654,26cyclictest0-21swapper/008:28:090
71162623,51sleep16175-21yum-updatesd-he07:33:211
18355996241,14cyclictest0-21swapper/212:18:062
1835699614,28cyclictest0-21swapper/310:33:133
1835599613,50cyclictest0-21swapper/210:28:082
1835499614,12cyclictest0-21swapper/109:33:021
1835699604,30cyclictest0-21swapper/311:33:063
1835699604,29cyclictest0-21swapper/308:27:433
1835699604,28cyclictest0-21swapper/307:08:053
1835699604,28cyclictest0-21swapper/307:08:053
1835599604,48cyclictest0-21swapper/208:13:122
1835599603,49cyclictest0-21swapper/206:58:072
265542598,43sleep20-21swapper/209:23:022
1835699594,28cyclictest0-21swapper/311:27:363
1835699593,49cyclictest0-21swapper/308:38:153
1835599592,51cyclictest0-21swapper/208:48:002
248599580,4rtkit-daemon2484-21rtkit-daemon08:35:363
248599580,4rtkit-daemon2484-21rtkit-daemon08:35:363
18356995840,12cyclictest17735-21unixbench_multi11:18:113
18356995822,13cyclictest0-21swapper/311:28:083
18356995822,13cyclictest0-21swapper/311:28:083
18356995820,14cyclictest0-21swapper/308:53:153
1835599583,48cyclictest0-21swapper/208:18:012
1835599583,47cyclictest0-21swapper/211:07:492
1835499584,33cyclictest0-21swapper/109:42:551
18354995825,14cyclictest0-21swapper/107:47:441
133852584,9sleep00-21swapper/011:12:360
1835699575,28cyclictest0-21swapper/309:23:103
1835699574,43cyclictest0-21swapper/307:53:163
1835699574,43cyclictest0-21swapper/307:53:163
1835699574,28cyclictest0-21swapper/311:08:083
1835599574,46cyclictest0-21swapper/210:01:112
1835599574,46cyclictest0-21swapper/210:01:112
1835599573,47cyclictest0-21swapper/207:27:582
104482573,8sleep310579-21sed11:03:123
35622564,44sleep10-21swapper/107:28:011
1835699565,42cyclictest0-21swapper/307:33:103
1835699565,29cyclictest0-21swapper/308:03:153
1835699564,28cyclictest0-21swapper/310:42:393
18356995636,13cyclictest28635-21unixbench_singl08:18:173
1835699563,28cyclictest0-21swapper/307:23:013
1835699563,27cyclictest0-21swapper/309:11:593
1835699562,34cyclictest0-21swapper/310:22:573
1835599563,46cyclictest0-21swapper/211:57:512
1835599562,21cyclictest0-21swapper/209:28:192
149152563,12sleep30-21swapper/311:13:073
1835699555,28cyclictest0-21swapper/308:43:013
1835699555,27cyclictest0-21swapper/309:03:103
1835699555,26cyclictest0-21swapper/310:52:583
1835699555,26cyclictest0-21swapper/307:16:403
1835699554,29cyclictest0-21swapper/307:38:053
1835699554,28cyclictest0-21swapper/312:17:583
1835699554,28cyclictest0-21swapper/308:52:433
1835699554,26cyclictest0-21swapper/309:33:063
1835699554,26cyclictest0-21swapper/307:46:453
18356995537,12cyclictest0-21swapper/311:42:523
18356995523,11cyclictest0-21swapper/310:18:063
18356995521,13cyclictest0-21swapper/308:08:053
1835599554,43cyclictest0-21swapper/211:13:062
18355995536,11cyclictest26440-21sed11:37:572
18354995536,11cyclictest11841-21unixbench_singl09:58:131
18354995536,11cyclictest11841-21unixbench_singl09:58:131
1835499553,12cyclictest0-21swapper/110:13:131
1835099553,38cyclictest17328-21munin-node07:58:020
248599540,5rtkit-daemon2484-21rtkit-daemon06:53:182
1835699544,27cyclictest0-21swapper/312:13:023
1835699544,27cyclictest0-21swapper/312:13:023
1835699544,27cyclictest0-21swapper/310:03:093
1835699544,27cyclictest0-21swapper/307:03:173
1835699544,26cyclictest0-21swapper/311:42:243
1835699543,27cyclictest0-21swapper/311:47:533
18355995437,10cyclictest397-21cut08:28:102
18354995434,11cyclictest11658-21cpuspeed_turbos08:53:001
18354995422,13cyclictest0-21swapper/110:33:051
1835099543,45cyclictest0-21swapper/008:04:270
248599530,5rtkit-daemon2484-21rtkit-daemon07:28:163
1835699534,29cyclictest0-21swapper/310:28:003
1835699534,26cyclictest0-21swapper/309:32:023
18356995336,11cyclictest21886-21cut06:58:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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