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2026-07-27 - 16:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot3s.osadl.org (updated Mon Jul 27, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197902240163,24sleep20-21swapper/207:06:042
200752234163,58sleep30-21swapper/307:09:433
199792224154,56sleep10-21swapper/107:08:331
200462220189,21sleep00-21swapper/007:09:230
1543821520,4sleep02018299cyclictest08:10:150
17162520,4sleep011-21rcuc/007:40:010
215052480,1sleep30-21swapper/310:50:193
103632450,4sleep121-21rcuc/111:40:131
2019999380,27cyclictest0-21swapper/312:10:243
2018899380,25cyclictest0-21swapper/109:11:541
20182993810,13cyclictest16094-21munin-run10:40:020
2018899371,12cyclictest0-21swapper/108:27:291
2018899370,10cyclictest0-21swapper/107:39:201
2019999360,13cyclictest0-21swapper/307:31:333
20188993615,7cyclictest5619-21systemd-journal09:00:211
2018899360,22cyclictest0-21swapper/110:07:331
217462350,1sleep30-21swapper/312:05:163
2019999351,25cyclictest0-21swapper/311:43:133
2019999350,25cyclictest0-21swapper/311:45:493
2018299359,13cyclictest8896-21idleruntime-cro09:10:020
226472340,4sleep22019399cyclictest09:40:152
2019999340,26cyclictest0-21swapper/308:19:383
2019999340,25cyclictest0-21swapper/310:09:463
2018899341,9cyclictest0-21swapper/108:50:311
2018899341,12cyclictest0-21swapper/109:40:221
2019999331,22cyclictest31322-21latency08:45:223
2019999331,22cyclictest31322-21latency08:45:223
2019999331,19cyclictest23951-21hddtemp_smartct07:15:173
2018899331,7cyclictest0-21swapper/111:06:301
2018899331,11cyclictest0-21swapper/110:44:251
2018299338,12cyclictest32442-21munin-run08:50:010
2018299338,12cyclictest32442-21munin-run08:50:010
2018299335,13cyclictest24891-21munin-run11:00:010
2018299334,14cyclictest4475-21munin-run09:00:020
2019999321,10cyclictest0-21swapper/308:10:463
2018899321,9cyclictest0-21swapper/109:47:541
2018899321,18cyclictest0-21swapper/112:24:371
2018899321,10cyclictest0-21swapper/112:06:451
2018899320,9cyclictest0-21swapper/111:03:021
2019999310,12cyclictest0-21swapper/307:20:453
2018899315,3cyclictest0-21swapper/108:02:171
2018899311,10cyclictest0-21swapper/110:16:331
2018899310,9cyclictest0-21swapper/112:02:331
2018899310,9cyclictest0-21swapper/111:45:291
2018899310,9cyclictest0-21swapper/111:15:381
2018899310,9cyclictest0-21swapper/111:15:381
2018899310,8cyclictest0-21swapper/111:27:541
2018899310,10cyclictest0-21swapper/111:30:221
2018899310,10cyclictest0-21swapper/110:58:451
2018899310,10cyclictest0-21swapper/109:39:021
2019999305,2cyclictest0-21swapper/308:22:303
2019999301,23cyclictest0-21swapper/311:52:043
2019999301,16cyclictest0-21swapper/307:39:053
2019999301,10cyclictest0-21swapper/310:24:103
2019999301,10cyclictest0-21swapper/310:00:013
2019999300,17cyclictest0-21swapper/308:32:583
2018899303,3cyclictest0-21swapper/107:17:171
2018899301,9cyclictest0-21swapper/110:38:491
2018899301,11cyclictest0-21swapper/111:35:211
2018899300,8cyclictest0-21swapper/110:49:211
2018899300,18cyclictest0-21swapper/110:21:491
2018299309,12cyclictest8146-21/usr/sbin/munin11:35:190
20182993011,7cyclictest4564-21/usr/sbin/munin11:25:190
20199992916,7cyclictest29518-21/usr/sbin/munin11:10:243
2019999291,14cyclictest0-21swapper/310:48:523
2019999291,12cyclictest0-21swapper/308:58:133
2019999291,11cyclictest0-21swapper/312:28:543
2019999291,11cyclictest0-21swapper/312:28:543
2019999290,9cyclictest0-21swapper/308:39:223
2019999290,12cyclictest0-21swapper/312:16:023
2019999290,12cyclictest0-21swapper/307:54:533
2019999290,11cyclictest0-21swapper/309:35:493
2018899296,3cyclictest0-21swapper/108:23:451
2018899291,9cyclictest0-21swapper/107:59:331
2018899291,8cyclictest0-21swapper/108:13:531
2018899291,25cyclictest0-21swapper/107:12:491
2018899291,11cyclictest0-21swapper/109:15:221
2018899291,10cyclictest0-21swapper/108:37:311
2018899291,10cyclictest0-21swapper/107:30:101
2018899290,9cyclictest0-21swapper/112:35:331
2018899290,9cyclictest0-21swapper/109:52:461
2018899290,9cyclictest0-21swapper/109:29:061
2018899290,10cyclictest0-21swapper/112:17:491
2018899290,10cyclictest0-21swapper/107:51:171
2018299299,8cyclictest5620-21/usr/sbin/munin09:00:220
20182992910,9cyclictest17683-21awk09:30:010
2019999281,22cyclictest0-21swapper/310:37:263
2019999281,17cyclictest0-21swapper/310:04:013
2019999281,17cyclictest0-21swapper/310:04:013
2019999281,12cyclictest0-21swapper/308:43:463
2019999280,9cyclictest0-21swapper/311:24:013
2019999280,14cyclictest0-21swapper/312:31:443
2018899285,7cyclictest620-21munin-run10:05:011
2018899285,7cyclictest620-21munin-run10:05:011
2018899285,3cyclictest0-21swapper/107:20:281
2018899281,9cyclictest0-21swapper/110:25:251
2018899281,9cyclictest0-21swapper/108:16:451
2018899281,7cyclictest0-21swapper/109:58:581
2018899281,21cyclictest0-21swapper/107:42:251
2018899281,20cyclictest7125-21kworker/u8:210:51:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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