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2026-01-12 - 02:50

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 Jan 12, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124582236163,24sleep20-21swapper/219:08:272
123692202164,25sleep10-21swapper/119:07:181
123762201164,24sleep30-21swapper/319:07:253
123682200163,25sleep00-21swapper/019:07:170
165821500,3sleep01266899cyclictest23:35:200
2797421180,4sleep227971-21find19:40:212
183052940,5sleep21267999cyclictest19:20:162
70612510,4sleep01266899cyclictest23:50:010
172272430,3sleep230-21rcuc/220:30:182
12668994010,14cyclictest24638-21basename00:30:020
1266899367,13cyclictest7354-21munin-run20:10:020
1266899338,11cyclictest0-21swapper/019:55:010
1266899335,13cyclictest15847-21awk00:10:010
1266899334,13cyclictest22752-21idleruntime-cro20:45:010
12679993220,2cyclictest14890-21kworker/2:021:40:172
277782290,4sleep339-21rcuc/319:40:193
1267599271,6cyclictest0-21swapper/100:16:011
1266899279,15cyclictest16162-21idleruntime-cro20:30:020
1267999269,3cyclictest14890-21kworker/2:020:45:012
12679992612,2cyclictest14890-21kworker/2:022:45:132
12679992612,2cyclictest14890-21kworker/2:020:15:132
1267599261,9cyclictest0-21swapper/119:45:251
1266899260,13cyclictest0-21swapper/023:44:550
1266899260,12cyclictest19604-21perf23:05:010
1268499251,7cyclictest0-21swapper/322:05:243
1266899256,16cyclictest28720-21munin-run19:45:000
1266899251,10cyclictest0-21swapper/022:51:410
1267599249,12cyclictest8211-21needreboot23:50:181
1267599241,9cyclictest0-21swapper/122:30:201
1266899241,10cyclictest0-21swapper/023:09:410
1266899241,10cyclictest0-21swapper/000:23:060
1268499239,3cyclictest87150irq/126-enp1s0-00:22:553
1268499237,9cyclictest0-21swapper/322:35:203
1268499231,5cyclictest27832-21if_err_enp2s000:35:173
12679992313,2cyclictest32160-21awk22:20:002
1267599231,19cyclictest5157-21munin-run20:05:001
1266899236,15cyclictest23358-21munin-run22:00:020
1266899231,12cyclictest12996-21perf22:50:010
1266899230,11cyclictest0-21swapper/023:28:330
1268499221,7cyclictest0-21swapper/322:52:213
1268499221,5cyclictest0-21swapper/323:00:193
1268499221,3cyclictest21886-21fschecks_time21:55:133
1268499221,12cyclictest8194-21/usr/sbin/munin21:25:123
1268499221,11cyclictest0-21swapper/322:15:263
1267599223,10cyclictest0-21swapper/100:03:471
1267599221,3cyclictest13270-21hddtemp_smartct21:35:161
1267599221,18cyclictest24394-21irqstats22:00:181
1267599221,11cyclictest29695-21cpuspeed_turbos21:00:111
1267599220,5cyclictest5666-21kworker/u8:121:45:271
1266899221,9cyclictest0-21swapper/019:47:590
12668992216,4cyclictest22128-21awk19:30:010
1266899220,8cyclictest0-21swapper/021:35:310
1268499213,9cyclictest12444-21kworker/3:021:45:233
1268499211,8cyclictest16569-21irqstats19:15:183
1268499211,6cyclictest0-21swapper/323:25:403
1268499211,6cyclictest0-21swapper/321:52:433
1268499211,6cyclictest0-21swapper/321:32:433
12684992111,2cyclictest312-21awk23:35:003
1268499211,10cyclictest0-21swapper/319:26:143
1267999219,2cyclictest14890-21kworker/2:023:32:382
1267999214,4cyclictest14890-21kworker/2:023:27:202
1267999212,10cyclictest14890-21kworker/2:022:00:012
1267999211,6cyclictest0-21swapper/221:13:002
12679992116,3cyclictest22243-40dnf00:22:522
1267999211,4cyclictest0-21swapper/221:47:472
1267599219,3cyclictest28913-21cat23:25:131
1267599211,18cyclictest0-21swapper/123:01:231
1267599211,17cyclictest0-21swapper/123:30:171
12675992111,3cyclictest29246-21smart_sda22:10:251
1267599211,12cyclictest30398-21cstates22:15:131
1267599211,11cyclictest8730-21cat22:40:021
1267599211,11cyclictest4864-21ntp_states21:15:221
1267599211,11cyclictest4864-21ntp_states21:15:221
1267599211,11cyclictest22969-21users21:55:251
1267599211,11cyclictest22807-21grep00:25:121
1267599211,11cyclictest19859-21/usr/sbin/munin21:50:131
1267599210,15cyclictest87450irq/129-enp1s0-22:50:561
1266899216,6cyclictest0-21swapper/022:30:150
1266899215,2cyclictest87150irq/126-enp1s0-23:13:120
1266899213,15cyclictest17397-21idleruntime-cro23:00:010
1266899212,16cyclictest11404-21munin-run00:00:010
1266899211,4cyclictest4191-21munin-run22:30:020
1266899211,4cyclictest4191-21munin-run22:30:020
12668992114,4cyclictest26134-21/usr/sbin/munin22:05:140
1266899211,10cyclictest12379-21perf21:35:010
1268499209,3cyclictest14791-21/usr/sbin/munin21:40:143
1268499208,3cyclictest4204-21awk22:30:013
1268499208,3cyclictest4204-21awk22:30:013
1268499201,6cyclictest0-21swapper/322:59:043
1268499201,4cyclictest0-21swapper/323:21:523
1268499201,11cyclictest24591-21NetworkManager20:45:463
1268499201,11cyclictest21058-21cstates20:40:143
1268499201,11cyclictest17900-21sshd00:13:323
1268499201,11cyclictest0-21swapper/320:50:113
1268499201,10cyclictest31944-21irqstats19:50:183
1267999206,3cyclictest2356-21kworker/2:223:45:542
1267999205,8cyclictest87450irq/129-enp1s0-19:30:182
1267999205,5cyclictest725-21cat22:20:172
1267999202,6cyclictest0-21swapper/221:21:552
1267999201,6cyclictest0-21swapper/221:29:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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