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2026-04-30 - 16:35

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 Thu Apr 30, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
105322117106,6sleep20-21swapper/207:08:342
103572115104,6sleep10-21swapper/107:06:161
10562211188,18sleep00-21swapper/007:08:560
10401210581,19sleep30-21swapper/307:06:503
44402840,5sleep11067599cyclictest08:11:021
149032740,0sleep10-21swapper/109:32:111
267562720,0sleep00-21swapper/011:28:110
188702720,0sleep10-21swapper/110:10:241
63882710,0sleep10-21swapper/110:31:241
24932680,0sleep10-21swapper/111:36:131
1067599270,2cyclictest0-21swapper/109:25:121
320762260,1sleep229-21rcuc/210:59:592
150552220,1sleep20-21swapper/210:40:432
10676992118,2cyclictest25330-21kworker/u8:109:10:052
1067599210,19cyclictest0-21swapper/112:25:111
10676992017,2cyclictest13476-21kworker/u8:111:49:052
10676991916,2cyclictest12364-21kworker/u8:207:52:052
1067499190,18cyclictest0-21swapper/011:50:050
10676991815,2cyclictest6925-21kworker/u8:011:10:022
10676991815,2cyclictest10591-21kworker/u8:108:30:052
1067599181,3cyclictest0-21swapper/110:50:141
10675991813,3cyclictest4280-21kworker/u8:112:15:051
242002170,0sleep20-21swapper/210:16:022
10676991714,2cyclictest10699-21kworker/u8:010:02:042
1067799161,3cyclictest11663-21pzem_energy12:20:283
1067799161,3cyclictest0-21swapper/310:30:153
10677991611,3cyclictest17512-21hddtemp_smartct07:25:153
10676991613,2cyclictest32751-21needreboot10:25:162
10676991613,2cyclictest22243-21kworker/u8:012:34:042
10676991613,2cyclictest10591-21kworker/u8:108:37:042
10675991613,2cyclictest27346-21kworker/u8:210:27:041
10675991613,2cyclictest25132-21kworker/u8:211:32:051
10675991613,2cyclictest13112-21kworker/u8:011:00:051
10675991613,2cyclictest1063-21kworker/u8:111:21:051
10675991611,3cyclictest0-21swapper/111:05:141
10675991611,3cyclictest0-21swapper/108:15:151
1067599161,13cyclictest0-21swapper/107:30:181
1067599160,2cyclictest0-21swapper/112:31:041
1067599160,14cyclictest0-21swapper/109:35:161
1067499162,12cyclictest3127-21nscd10:47:050
10674991612,2cyclictest0-21swapper/008:45:150
58432151,3sleep20-21swapper/212:15:102
281252150,1sleep30-21swapper/309:11:423
1067799151,12cyclictest12352-21ssh11:12:403
10677991510,3cyclictest4562-21gdm-simple-gree12:08:583
10677991510,3cyclictest30441-21diskmemload11:31:313
10677991510,3cyclictest0-21swapper/312:33:483
10677991510,3cyclictest0-21swapper/311:46:373
10677991510,3cyclictest0-21swapper/310:35:453
1067799150,13cyclictest12866-21date07:14:593
10676991512,2cyclictest25132-21kworker/u8:211:29:042
10676991512,2cyclictest22243-21kworker/u8:012:39:052
10676991512,2cyclictest20517-21kworker/u8:212:13:052
10676991512,2cyclictest10008-21kworker/u8:107:11:042
1067699150,2cyclictest0-21swapper/211:19:042
1067599151,3cyclictest5906-21perl11:40:121
1067599150,13cyclictest25510-21diskmemload11:14:551
1067599150,13cyclictest0-21swapper/108:05:131
109862140,2sleep011096-21pzem_current11:45:190
1067799149,3cyclictest10884-21ssh09:27:573
1067799142,7cyclictest0-21swapper/309:55:013
1067799141,2cyclictest0-21swapper/312:14:113
10677991411,2cyclictest0-21swapper/311:05:433
1067799141,11cyclictest20961-21ssh10:13:033
10677991410,2cyclictest25510-21diskmemload11:28:353
1067799140,3cyclictest5794-21sh12:15:093
1067799140,2cyclictest0-21swapper/310:05:263
1067799140,12cyclictest31771-21ssh10:59:283
1067799140,12cyclictest25931-21sh09:44:333
1067799140,12cyclictest25931-21sh09:44:323
1067799140,12cyclictest17147-21ssh12:26:053
1067799140,12cyclictest0-21swapper/310:15:173
1067799140,12cyclictest0-21swapper/308:10:483
10676991411,2cyclictest9150-21kworker/u8:209:50:022
10676991411,2cyclictest4748-21kworker/u8:208:15:052
10676991411,2cyclictest30651-21kworker/u8:011:44:042
10676991411,2cyclictest25132-21kworker/u8:211:38:062
10676991411,2cyclictest21926-21kworker/u8:109:48:042
10676991411,2cyclictest16364-21kworker/u8:009:39:052
10676991411,2cyclictest14464-21kworker/u8:007:19:052
10676991411,2cyclictest13112-21kworker/u8:010:54:042
10676991411,2cyclictest12364-21kworker/u8:207:26:042
1067699141,12cyclictest10647-21ssh10:36:012
10676991411,2cyclictest0-21swapper/212:25:152
10676991411,2cyclictest0-21swapper/211:30:172
10676991411,2cyclictest0-21swapper/209:25:262
10676991411,2cyclictest0-21swapper/208:20:172
1067699140,2cyclictest0-21swapper/212:01:482
1067699140,2cyclictest0-21swapper/210:34:052
1067699140,2cyclictest0-21swapper/209:44:372
1067699140,2cyclictest0-21swapper/209:44:362
1067699140,13cyclictest0-21swapper/211:54:172
1067699140,13cyclictest0-21swapper/208:25:162
1067699140,12cyclictest20294-21hwlatdetect08:55:132
10675991411,2cyclictest8568-21kworker/u8:209:06:041
10675991411,2cyclictest17105-21kworker/u8:011:18:051
10675991411,2cyclictest0-21swapper/109:43:351
10675991411,2cyclictest0-21swapper/109:43:341
1067599140,13cyclictest0-21swapper/110:42:041
1067599140,13cyclictest0-21swapper/107:52:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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