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2026-06-21 - 08:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, 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 50 highest latencies:
System rack0slot3s.osadl.org (updated Sun Jun 21, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10599542262215,37sleep00-21swapper/019:09:420
10597572262211,18sleep40-21swapper/419:07:034
10596572262220,33sleep30-21swapper/319:05:433
10598072261214,17sleep20-21swapper/219:07:432
10599222260214,17sleep10-21swapper/119:09:191
10597672257212,16sleep50-21swapper/519:07:135
10599422253205,17sleep60-21swapper/619:09:326
10596972243217,17sleep70-21swapper/719:06:197
12245832920,1sleep01224575-21ntp_states00:05:200
106027899361,1cyclictest0-21swapper/023:40:160
1060305993534,1cyclictest1390-21snmpd19:46:476
1060291993429,3cyclictest0-21swapper/319:10:213
106029199340,13cyclictest0-21swapper/323:05:223
1060287993314,17cyclictest0-21swapper/200:30:142
1060305993231,1cyclictest0-21swapper/623:40:166
1060296992927,1cyclictest1390-21snmpd20:05:064
1060291992928,1cyclictest0-21swapper/319:46:463
1060287992928,1cyclictest0-21swapper/220:56:192
106027899291,26cyclictest0-21swapper/021:10:150
1060309992825,2cyclictest709367-21kworker/7:0+events20:35:197
1060309992813,14cyclictest709367-21kworker/7:0+events22:15:187
1060291992826,2cyclictest0-21swapper/323:40:163
106030999270,25cyclictest0-21swapper/721:16:207
106030999270,25cyclictest0-21swapper/720:24:577
1060305992721,4cyclictest0-21swapper/600:05:166
106030099270,25cyclictest0-21swapper/523:12:175
1060296992723,3cyclictest1390-21snmpd21:50:214
106029699270,25cyclictest0-21swapper/420:37:374
106029699270,1cyclictest0-21swapper/422:36:174
106029199270,25cyclictest528-21systemd-journal19:59:123
106029199270,25cyclictest528-21systemd-journal19:59:123
1060300992624,2cyclictest1390-21snmpd19:22:045
106029699260,22cyclictest0-21swapper/420:31:314
106029699260,22cyclictest0-21swapper/400:20:264
106029199260,26cyclictest0-21swapper/320:05:523
106029199260,24cyclictest528-21systemd-journal23:55:153
106029199260,24cyclictest0-21swapper/321:36:053
106029199260,24cyclictest0-21swapper/300:30:023
106029199260,24cyclictest0-21swapper/300:05:163
106029199260,22cyclictest0-21swapper/323:48:263
1060287992622,3cyclictest1390-21snmpd21:13:472
106028799260,22cyclictest0-21swapper/222:36:382
106028799260,22cyclictest0-21swapper/220:18:302
1060282992619,3cyclictest0-21swapper/123:15:171
106028299260,24cyclictest0-21swapper/123:58:161
1060278992622,3cyclictest1390-21snmpd20:13:440
1060309992521,3cyclictest1390-21snmpd20:51:257
1060309992521,3cyclictest1390-21snmpd20:02:207
1060309992521,3cyclictest1390-21snmpd20:02:207
1060309992521,3cyclictest1078711-21cat19:40:147
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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