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2026-08-09 - 23:48

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 Sun Aug 09, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
219499750,4rtkit-daemon2193-21rtkit-daemon08:29:443
219499750,4rtkit-daemon2193-21rtkit-daemon08:19:291
1505899756,57cyclictest0-21swapper/010:41:400
219499710,8rtkit-daemon0-21swapper/010:56:452
1506499684,56cyclictest20224-21gltestperf09:57:013
15061996840,11cyclictest29988-21fschecks_time10:11:591
219499670,6rtkit-daemon0-21swapper/306:01:570
219499670,5rtkit-daemon2193-21rtkit-daemon07:17:090
15064996713,47cyclictest0-21swapper/311:15:163
1506399674,56cyclictest0-21swapper/208:37:072
1506399672,59cyclictest0-21swapper/208:02:082
15058996721,27cyclictest0-21swapper/010:52:020
1506399664,54cyclictest0-21swapper/211:01:522
1506399664,54cyclictest0-21swapper/211:01:522
1506399664,54cyclictest0-21swapper/209:57:082
15063996631,27cyclictest23147-21tune2fs06:17:072
1506399663,55cyclictest0-21swapper/210:47:022
1506399652,57cyclictest0-21swapper/210:04:162
1506399644,52cyclictest0-21swapper/210:22:152
15061996436,13cyclictest0-21swapper/109:16:551
1506399634,52cyclictest0-21swapper/208:07:182
1506399634,51cyclictest0-21swapper/209:42:012
15063996338,9cyclictest27637-21ssh10:07:162
15061996337,12cyclictest0-21swapper/108:08:561
1505899633,52cyclictest0-21swapper/009:25:180
219499620,7rtkit-daemon0-21swapper/106:07:190
219499620,7rtkit-daemon0-21swapper/106:07:190
219499620,4rtkit-daemon2193-21rtkit-daemon08:49:580
1506499625,49cyclictest14235-21gltestperf10:36:593
1506399624,51cyclictest0-21swapper/211:11:392
1506399624,51cyclictest0-21swapper/209:07:552
1506399623,52cyclictest0-21swapper/210:52:012
1506399622,54cyclictest0-21swapper/210:41:562
15061996233,14cyclictest0-21swapper/109:59:431
219499610,8rtkit-daemon0-21swapper/010:44:231
219499610,6rtkit-daemon0-21swapper/208:59:203
219499610,6rtkit-daemon0-21swapper/208:59:203
219499610,4rtkit-daemon2193-21rtkit-daemon11:15:222
1506499618,46cyclictest22309-21ssh08:22:073
1506499614,49cyclictest0-21swapper/310:17:183
1506499614,49cyclictest0-21swapper/310:17:183
1506399615,47cyclictest0-21swapper/209:27:142
1506399614,49cyclictest0-21swapper/211:21:502
1506399614,49cyclictest0-21swapper/208:52:002
1506399614,49cyclictest0-21swapper/208:42:162
15061996133,12cyclictest0-21swapper/109:07:211
15061996133,11cyclictest5670-21sed11:12:101
219499600,6rtkit-daemon0-21swapper/108:20:140
219499600,4rtkit-daemon2193-21rtkit-daemon11:17:152
1506499604,16cyclictest0-21swapper/309:42:583
1506399603,49cyclictest0-21swapper/211:26:552
15061996030,13cyclictest0-21swapper/108:02:101
15061996029,12cyclictest0-21swapper/109:55:391
1505899603,28cyclictest0-21swapper/010:29:440
15058996010,33cyclictest0-21swapper/011:07:100
219499590,7rtkit-daemon0-21swapper/108:32:210
219499590,6rtkit-daemon0-21swapper/106:44:180
219499590,6rtkit-daemon0-21swapper/106:14:260
1506499595,47cyclictest0-21swapper/308:12:103
1506499595,45cyclictest10500-21ssh10:31:563
1506399595,47cyclictest16552-21sh08:12:232
1506399594,48cyclictest0-21swapper/210:27:162
1506399593,49cyclictest19865-21unixbench_multi08:17:202
1506399593,49cyclictest0-21swapper/209:02:052
1506399593,49cyclictest0-21swapper/208:36:452
1506199594,47cyclictest0-21swapper/108:57:031
1506199594,47cyclictest0-21swapper/108:57:031
15061995933,12cyclictest0-21swapper/109:39:491
15061995933,12cyclictest0-21swapper/109:39:491
15061995932,12cyclictest0-21swapper/109:33:211
15061995932,12cyclictest0-21swapper/108:42:181
15061995931,14cyclictest0-21swapper/108:29:571
15061995931,13cyclictest0-21swapper/107:20:441
15061995931,12cyclictest0-21swapper/110:22:401
15061995930,12cyclictest0-21swapper/106:22:131
15058995941,10cyclictest10979-21grep06:57:240
1506499585,40cyclictest0-21swapper/308:55:203
1506499584,47cyclictest0-21swapper/310:04:003
1506499584,15cyclictest0-21swapper/308:43:023
1506499583,48cyclictest12580-21rm08:07:133
15064995819,32cyclictest361ktimersoftd/309:27:153
15063995837,14cyclictest0-21swapper/209:37:102
15063995837,14cyclictest0-21swapper/209:37:102
1506399582,49cyclictest3219-21cpuspeed_turbos09:31:572
15061995833,11cyclictest3347-21runrttasks11:09:531
15061995831,13cyclictest0-21swapper/110:47:011
15061995831,13cyclictest0-21swapper/108:14:501
15061995831,12cyclictest0-21swapper/111:22:461
15061995830,13cyclictest0-21swapper/111:02:071
15061995830,13cyclictest0-21swapper/111:02:071
1505899583,47cyclictest0-21swapper/010:22:060
1505899583,34cyclictest0-21swapper/008:31:230
1505899583,21cyclictest0-21swapper/010:47:480
1505899582,50cyclictest0-21swapper/011:21:560
1505899582,49cyclictest0-21swapper/010:42:010
219499570,8rtkit-daemon2193-21rtkit-daemon07:47:230
1506499574,12cyclictest17279-21needreboot09:52:063
15064995721,30cyclictest25366-21cut09:16:543
1506399573,48cyclictest0-21swapper/208:46:572
1506399573,48cyclictest0-21swapper/206:12:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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