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2026-06-15 - 08:02

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 Mon Jun 15, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17984232264214,16sleep40-21swapper/419:06:294
17986782262218,16sleep20-21swapper/219:09:572
17983952261216,36sleep00-21swapper/019:06:100
17986692260214,16sleep30-21swapper/319:09:503
17985682260214,17sleep70-21swapper/719:08:267
17984962255212,33sleep60-21swapper/619:07:286
17963482254212,17sleep10-21swapper/119:05:061
17983632244221,15sleep50-21swapper/519:05:425
179900099390,22cyclictest0-21swapper/422:25:124
1799012993028,1cyclictest1390-21snmpd19:41:467
1799004993027,1cyclictest0-21swapper/523:15:205
1799004992822,4cyclictest1888462-21grep21:50:145
1799004992822,4cyclictest1888462-21grep21:50:145
1798991992812,14cyclictest0-21swapper/219:50:162
179900999270,1cyclictest0-21swapper/623:24:386
1799004992718,5cyclictest0-21swapper/519:23:285
1799004992718,5cyclictest0-21swapper/519:23:285
1799004992711,2cyclictest0-21swapper/500:30:445
1798986992720,3cyclictest0-21swapper/121:40:201
179898699270,25cyclictest0-21swapper/122:42:191
1799012992622,3cyclictest1390-21snmpd20:07:517
179901299260,24cyclictest0-21swapper/723:31:057
179900099260,22cyclictest0-21swapper/400:09:374
179899599261,1cyclictest0-21swapper/323:46:573
179899599260,24cyclictest0-21swapper/322:55:433
1798991992622,3cyclictest1390-21snmpd23:55:332
1798986992622,2cyclictest0-21swapper/120:20:201
179898699260,22cyclictest0-21swapper/123:25:381
179898699260,22cyclictest0-21swapper/100:31:251
1798982992622,3cyclictest1390-21snmpd19:13:400
1799012992521,3cyclictest1390-21snmpd23:47:097
1799012992521,3cyclictest1390-21snmpd19:31:207
1799012992518,5cyclictest0-21swapper/719:25:297
1799012992518,5cyclictest0-21swapper/700:15:487
179901299250,24cyclictest1879067-21taskset21:33:587
1799009992524,1cyclictest0-21swapper/600:29:136
1799009992524,1cyclictest0-21swapper/600:29:136
1799009992521,3cyclictest1850307-21cat20:40:166
1799009992518,5cyclictest0-21swapper/621:29:086
1799009992518,5cyclictest0-21swapper/619:48:016
1799004992521,3cyclictest1225-21ntpd20:27:555
1799004992521,2cyclictest0-21swapper/521:26:085
1799000992522,3cyclictest1390-21snmpd20:40:544
179900099250,23cyclictest0-21swapper/419:43:354
179900099250,1cyclictest0-21swapper/419:55:594
1798995992522,3cyclictest1390-21snmpd22:37:033
1798995992521,3cyclictest1390-21snmpd22:32:223
1798995992518,5cyclictest0-21swapper/321:38:143
179899599250,23cyclictest0-21swapper/322:44:483
1798991992518,5cyclictest0-21swapper/223:36:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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