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2026-06-28 - 05:09

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

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 rack8slot4s.osadl.org (updated Sun Jun 28, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21729552271188,24sleep40-21swapper/419:05:464
21731182246176,57sleep70-21swapper/719:08:067
21732442236166,22sleep30-21swapper/319:09:553
21730302235174,50sleep50-21swapper/519:06:515
21730362229167,20sleep20-21swapper/219:06:562
21731262227191,24sleep60-21swapper/619:08:136
21730162223160,20sleep00-21swapper/019:06:380
21731682219184,23sleep10-21swapper/119:08:491
2173460993022,8cyclictest2306949-21sh22:55:002
217347199290,28cyclictest0-21swapper/622:55:006
217346999297,4cyclictest0-21swapper/519:59:585
217347199280,27cyclictest0-21swapper/623:30:126
217347199280,1cyclictest2250849-21idleruntime-cro21:20:016
217346999286,4cyclictest0-21swapper/522:44:435
217346999286,4cyclictest0-21swapper/521:16:515
217346999286,4cyclictest0-21swapper/520:54:535
217346999286,4cyclictest0-21swapper/520:43:545
217346999286,4cyclictest0-21swapper/520:32:555
217345899280,7cyclictest0-21swapper/120:40:001
217345899280,0cyclictest0-21swapper/123:25:121
2173471992717,5cyclictest2191849-21cat19:40:006
217347199270,22cyclictest0-21swapper/620:25:126
217347199270,21cyclictest0-21swapper/619:50:116
217345899270,5cyclictest0-21swapper/123:50:001
217345899270,26cyclictest0-21swapper/123:40:181
217345899270,26cyclictest0-21swapper/120:30:131
217345899270,0cyclictest0-21swapper/123:20:181
217347199260,22cyclictest2194845-21munin-run19:45:006
2173460992621,5cyclictest2330531-21idleruntime-cro23:35:002
2173458992621,5cyclictest0-21swapper/121:10:111
217345899260,25cyclictest0-21swapper/121:35:181
217345899260,0cyclictest0-21swapper/100:00:131
217345899260,0cyclictest0-21swapper/100:00:131
217347599250,24cyclictest2345253-21cron00:00:007
217347599250,24cyclictest2345253-21cron00:00:007
217347599250,24cyclictest2260143-21apt-get21:35:137
217347599250,24cyclictest0-21swapper/722:25:137
217347599250,24cyclictest0-21swapper/719:30:167
217347199250,24cyclictest0-21swapper/622:20:126
217347199250,24cyclictest0-21swapper/619:20:196
217346999257,0cyclictest0-21swapper/522:11:465
217346999256,18cyclictest0-21swapper/522:55:425
217346999256,18cyclictest0-21swapper/522:33:445
217346999250,24cyclictest2318745-21munin-plugin-st23:15:005
217346999250,24cyclictest0-21swapper/519:24:595
217346999250,24cyclictest0-21swapper/500:00:125
217346999250,24cyclictest0-21swapper/500:00:125
217346099250,22cyclictest2224742-21apt-get20:35:112
217345899250,24cyclictest0-21swapper/121:50:121
217345899250,1cyclictest0-21swapper/121:30:111
217345899250,0cyclictest0-21swapper/121:25:141
217345899250,0cyclictest0-21swapper/120:25:121
217345899250,0cyclictest0-21swapper/119:15:131
217347599240,23cyclictest2363025-21turbostat00:30:007
2173471992422,1cyclictest2351264-21appstreamcli00:10:026
217347199240,21cyclictest0-21swapper/623:45:126
217346999246,18cyclictest0-21swapper/523:17:405
217346999246,18cyclictest0-21swapper/522:00:475
217346999246,18cyclictest0-21swapper/521:05:525
217346999246,18cyclictest0-21swapper/520:21:565
217346999246,18cyclictest0-21swapper/520:10:575
217346999246,18cyclictest0-21swapper/520:10:575
217346999246,18cyclictest0-21swapper/500:34:335
217346999246,0cyclictest0-21swapper/523:06:415
217346999246,0cyclictest0-21swapper/522:22:455
217346999246,0cyclictest0-21swapper/521:49:485
217346999246,0cyclictest0-21swapper/519:48:595
217346999246,0cyclictest0-21swapper/500:23:345
217346999245,18cyclictest0-21swapper/523:50:375
217346699240,23cyclictest0-21swapper/423:05:124
217346699240,23cyclictest0-21swapper/420:50:104
217346699240,23cyclictest0-21swapper/420:15:124
217346499240,24cyclictest0-21swapper/322:10:123
217346499240,23cyclictest2233583-21apt-get20:50:103
2173460992419,5cyclictest0-21swapper/219:45:002
217346099240,24cyclictest2224316-21munin-plugin-st20:35:002
217346099240,23cyclictest0-21swapper/220:00:092
217345899240,23cyclictest0-21swapper/122:00:121
217345899240,0cyclictest0-21swapper/100:25:131
217345899240,0cyclictest0-21swapper/100:10:141
2173455992422,1cyclictest0-21swapper/022:05:000
2173455992419,4cyclictest2244947-21perf21:10:010
217345599240,23cyclictest0-21swapper/021:35:190
217345599240,23cyclictest0-21swapper/019:50:170
217345599240,0cyclictest0-21swapper/023:40:120
2173475992323,0cyclictest0-21swapper/720:55:127
2173475992322,1cyclictest0-21swapper/722:15:107
2173475992321,1cyclictest0-21swapper/723:30:007
2173475992320,3cyclictest2175069-21ntpq19:10:207
217347599230,23cyclictest0-21swapper/721:50:137
217347599230,22cyclictest2221799-21apt-get20:30:127
217347599230,22cyclictest0-21swapper/721:30:117
217347599230,22cyclictest0-21swapper/720:50:107
2173471992323,0cyclictest0-21swapper/622:00:126
2173471992322,1cyclictest2236527-21apt-get20:55:126
2173471992321,1cyclictest0-21swapper/621:25:136
217347199230,23cyclictest0-21swapper/623:35:186
217347199230,23cyclictest0-21swapper/620:10:116
217347199230,23cyclictest0-21swapper/620:10:116
217347199230,22cyclictest0-21swapper/621:40:136
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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