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2026-06-19 - 23:06

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
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 rack1slot6s.osadl.org (updated Fri Jun 19, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
127039912248,12cyclictest0-21swapper/210:34:502
12696991026,35cyclictest0-21swapper/008:54:580
12696991004,85cyclictest0-21swapper/008:45:130
1269699949,32cyclictest27981-21cpuspeed_turbos10:09:540
12696999332,14cyclictest0-21swapper/011:54:500
12696999323,9cyclictest5346-21gltestperf07:40:050
1269699925,26cyclictest18073-21seq10:42:140
1269699923,36cyclictest0-21swapper/012:09:510
1269699914,29cyclictest0-21swapper/007:25:120
12696999135,48cyclictest0-21swapper/009:20:020
1269699913,27cyclictest0-21swapper/007:05:570
1269699913,27cyclictest0-21swapper/007:05:570
12696999112,30cyclictest1761-21Xorg12:08:330
12696999032,15cyclictest0-21swapper/010:00:150
12696999022,9cyclictest24390-21kworker/0:210:44:510
1269699893,39cyclictest0-21swapper/012:00:060
12696998918,7cyclictest22547-21latency_hist09:14:430
12696998912,36cyclictest0-21swapper/007:20:180
1269699863,37cyclictest0-21swapper/009:52:240
1269699863,37cyclictest0-21swapper/009:52:240
1269699858,31cyclictest0-21swapper/010:58:450
1269699843,39cyclictest0-21swapper/010:07:500
1269699843,32cyclictest0-21swapper/010:53:080
1269699834,12cyclictest0-21swapper/011:08:490
1269699834,12cyclictest0-21swapper/011:08:490
1269699833,24cyclictest0-21swapper/011:10:530
1269699823,40cyclictest0-21swapper/009:07:190
1269699814,26cyclictest0-21swapper/010:31:100
1269699814,26cyclictest0-21swapper/010:31:100
12696998119,26cyclictest0-21swapper/009:30:040
12696998115,12cyclictest0-21swapper/009:25:100
1269699803,27cyclictest20631-21turbostat09:59:400
12696997722,23cyclictest0-21swapper/009:39:220
1270499753,65cyclictest30315-21chrt10:13:063
119512746,17sleep211980-21grep06:45:142
1270299735,60cyclictest0-21swapper/111:44:511
12703997146,9cyclictest12690-21cyclictest09:24:552
2435327013,49sleep20-21swapper/211:39:542
226732700,3sleep2281ktimersoftd/208:15:172
1270299684,57cyclictest0-21swapper/111:33:451
1270499674,13cyclictest0-21swapper/309:20:153
1270299664,40cyclictest8051-21fschecks_count09:39:591
1270499655,30cyclictest0-21swapper/311:04:523
1270499655,30cyclictest0-21swapper/311:04:523
1270499654,55cyclictest0-21swapper/310:39:393
1270499654,54cyclictest0-21swapper/307:25:073
1270499654,53cyclictest0-21swapper/312:09:523
1270499643,54cyclictest0-21swapper/308:14:563
12702996419,27cyclictest1227-21runrttasks09:31:281
1270499635,13cyclictest0-21swapper/311:29:363
1270499634,27cyclictest0-21swapper/309:34:553
1270299634,36cyclictest0-21swapper/111:54:391
12702996320,14cyclictest1124-21snmpd11:39:111
1270499625,51cyclictest1227-21runrttasks09:09:333
1270499625,49cyclictest0-21swapper/310:29:573
1270499625,49cyclictest0-21swapper/310:29:573
1270499624,28cyclictest0-21swapper/309:28:573
12703996233,23cyclictest0-21swapper/210:21:272
1270299624,37cyclictest0-21swapper/112:09:241
1270299624,36cyclictest0-21swapper/109:15:181
12702996224,15cyclictest0-21swapper/110:25:361
310792613,50sleep20-21swapper/211:00:312
1270499614,50cyclictest21756-21tail10:00:013
1270499613,52cyclictest0-21swapper/312:00:493
1270499613,52cyclictest0-21swapper/309:50:133
1270499613,52cyclictest0-21swapper/309:50:133
1270299616,30cyclictest0-21swapper/112:12:181
1270299615,28cyclictest0-21swapper/110:06:061
1270299614,35cyclictest0-21swapper/111:51:241
1270299614,35cyclictest0-21swapper/111:51:241
1270299614,12cyclictest0-21swapper/108:55:581
219499600,4rtkit-daemon2193-21rtkit-daemon07:04:171
1270499605,49cyclictest0-21swapper/311:59:373
1270499604,50cyclictest0-21swapper/309:40:113
1270499603,50cyclictest0-21swapper/310:20:083
1270499603,28cyclictest0-21swapper/310:24:563
12704996023,32cyclictest0-21swapper/309:11:043
12704996014,24cyclictest26923-21crond11:44:363
12703996035,9cyclictest11355-21ssh09:44:572
1270399603,41cyclictest0-21swapper/211:13:522
1270299606,31cyclictest0-21swapper/110:21:371
1270299604,39cyclictest0-21swapper/112:00:051
1270299604,33cyclictest0-21swapper/109:35:461
1270299604,13cyclictest0-21swapper/111:00:091
12704995940,12cyclictest4440-21gltestperf11:09:563
1270499594,49cyclictest0-21swapper/309:30:123
1270499594,25cyclictest9527-21memory12:04:583
1270499594,25cyclictest29122-21aten_r1power_cu10:59:483
1270499593,50cyclictest0-21swapper/311:29:483
1270499593,49cyclictest22116-21latency_hist10:49:383
1270299594,13cyclictest0-21swapper/109:00:091
1270299594,10cyclictest31100-21cpuspeed_turbos08:34:571
1270299593,49cyclictest0-21swapper/110:00:141
1270299593,49cyclictest0-21swapper/109:20:121
12702995917,22cyclictest22752-21cpuspeed_turbos07:10:011
12702995917,22cyclictest22752-21cpuspeed_turbos07:10:011
1270499585,28cyclictest0-21swapper/311:50:103
1270499585,28cyclictest0-21swapper/311:50:103
1270499584,47cyclictest0-21swapper/309:44:583
1270499584,12cyclictest0-21swapper/310:39:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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