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2026-03-22 - 11:40

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 Sun Mar 22, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6882236160,24sleep00-21swapper/019:07:290
5532234163,59sleep10-21swapper/119:05:531
6152203166,25sleep30-21swapper/319:06:413
5342201164,25sleep20-21swapper/219:05:382
2211421710,4sleep0103999cyclictest22:20:250
1055998783,3cyclictest0-21swapper/320:34:153
41072560,4sleep011-21rcuc/020:25:270
167372560,1sleep10-21swapper/122:10:141
167372560,1sleep10-21swapper/122:10:141
279622530,3sleep081ktimersoftd/022:35:170
211162530,4sleep121-21rcuc/122:20:141
236752500,4sleep121-21rcuc/123:40:111
91912450,2sleep20-21swapper/200:20:132
103999349,12cyclictest21505-21munin-run19:55:020
103999349,12cyclictest21505-21munin-run19:55:020
103999346,13cyclictest22149-21perf21:10:010
103999331,14cyclictest8248-21cpu23:05:100
1039993311,11cyclictest0-21swapper/000:00:020
1055993228,3cyclictest0-21swapper/320:05:103
103999324,13cyclictest27770-21munin-run23:50:020
103999316,12cyclictest30305-21munin-run20:15:020
1039993114,15cyclictest14597-21perf23:20:000
69402300,4sleep1104499cyclictest21:45:261
103999292,12cyclictest22794-21ntp_states19:55:210
103999291,12cyclictest0-21swapper/023:40:190
103999281,2cyclictest0-21swapper/000:06:370
1039992811,14cyclictest6753-21awk20:35:010
105199276,3cyclictest12050irq/123-ahci[0022:45:022
105199274,11cyclictest25891-40dnf20:05:002
1039992712,3cyclictest11139-21munin-run20:45:000
103999271,13cyclictest21187-21awk23:35:020
103999271,12cyclictest4868-21ntp_states22:55:200
103999270,12cyclictest0-21swapper/021:44:140
1051992616,6cyclictest9922-40dnf23:06:512
104499261,18cyclictest0-21swapper/121:35:171
1044992611,3cyclictest26974-21systemd-journal22:32:591
103999261,13cyclictest0-21swapper/023:53:170
103999261,12cyclictest0-21swapper/022:52:320
103999261,12cyclictest0-21swapper/020:52:080
103999261,12cyclictest0-21swapper/020:19:370
103999261,12cyclictest0-21swapper/020:01:210
103999261,12cyclictest0-21swapper/000:33:530
103999261,12cyclictest0-21swapper/000:12:530
103999261,11cyclictest0-21swapper/021:55:540
103999261,11cyclictest0-21swapper/019:27:400
103999261,11cyclictest0-21swapper/019:12:250
103999260,11cyclictest0-21swapper/020:21:450
108842250,3sleep339-21rcuc/319:30:123
105599251,5cyclictest13027-21munin-run00:30:013
104499252,19cyclictest8634-21munin-run00:20:011
103999259,2cyclictest0-21swapper/022:10:150
103999259,2cyclictest0-21swapper/022:10:150
103999251,12cyclictest14923-21munin-run19:40:000
103999251,12cyclictest0-21swapper/023:20:160
103999251,12cyclictest0-21swapper/023:00:240
103999251,12cyclictest0-21swapper/020:38:280
198762240,4sleep230-21rcuc/222:15:242
190822240,7sleep230-21rcuc/223:30:012
190822240,7sleep230-21rcuc/223:30:012
105199247,3cyclictest12050irq/123-ahci[0019:20:012
104499243,3cyclictest0-21swapper/123:06:121
104499241,17cyclictest0-21swapper/100:10:411
104499240,18cyclictest0-21swapper/100:08:051
103999241,15cyclictest0-21swapper/022:05:190
103999241,13cyclictest0-21swapper/000:18:090
103999241,12cyclictest0-21swapper/023:13:480
103999241,12cyclictest0-21swapper/022:27:330
103999241,12cyclictest0-21swapper/000:29:570
103999241,11cyclictest0-21swapper/020:56:040
103999241,11cyclictest0-21swapper/000:02:370
103999241,10cyclictest0-21swapper/021:52:120
103999241,10cyclictest0-21swapper/019:18:410
103999240,11cyclictest0-21swapper/019:43:440
103999240,10cyclictest0-21swapper/019:21:400
23122230,5sleep3105599cyclictest22:50:173
105599237,4cyclictest0-21swapper/323:42:423
105599231,3cyclictest0-21swapper/321:30:243
105599231,12cyclictest812-21snmpd20:25:143
105199232,6cyclictest2349-21munin-run20:25:012
104499239,3cyclictest15535-21awk20:55:001
104499233,11cyclictest0-21swapper/121:17:051
1044992318,3cyclictest580-21systemd-journal21:15:011
1044992314,2cyclictest13111-21grep22:00:231
1044992312,9cyclictest31417-21kworker/u8:222:47:031
104499231,19cyclictest4167-21cpu19:15:121
104499231,17cyclictest0-21swapper/122:56:041
104499231,17cyclictest0-21swapper/122:43:441
104499231,16cyclictest0-21swapper/100:38:081
104499231,16cyclictest0-21swapper/100:38:081
104499231,16cyclictest0-21swapper/100:01:511
104499230,18cyclictest0-21swapper/122:27:021
104499230,15cyclictest0-21swapper/121:50:361
104499230,11cyclictest0-21swapper/123:51:041
103999238,3cyclictest0-21swapper/023:29:320
103999238,3cyclictest0-21swapper/023:29:320
103999236,2cyclictest0-21swapper/021:15:100
103999231,9cyclictest0-21swapper/019:49:010
103999231,11cyclictest0-21swapper/023:37:330
103999231,11cyclictest0-21swapper/000:20:410
103999230,16cyclictest0-21swapper/022:33:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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