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2026-05-22 - 10:35

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 Fri May 22, 2026 00:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22617752261189,22sleep00-21swapper/019:09:420
22617692225191,22sleep30-21swapper/319:09:383
22616282222161,19sleep10-21swapper/119:07:341
22617122220182,26sleep20-21swapper/219:08:482
22616602220186,22sleep60-21swapper/619:08:036
22617352217181,24sleep70-21swapper/719:09:097
22592692215182,21sleep40-21swapper/419:05:044
22617712211182,19sleep50-21swapper/519:09:395
22691472910,0sleep50-21swapper/519:20:125
226202499404,4cyclictest0-21swapper/522:55:265
226202499286,4cyclictest0-21swapper/523:17:245
226202499276,4cyclictest0-21swapper/521:27:345
226202499275,4cyclictest0-21swapper/523:28:245
226202499275,4cyclictest0-21swapper/523:06:255
226202499275,4cyclictest0-21swapper/522:33:285
226202499275,4cyclictest0-21swapper/521:49:325
226202499275,4cyclictest0-21swapper/521:05:365
226202499275,4cyclictest0-21swapper/520:43:385
226202499275,4cyclictest0-21swapper/520:43:385
226202499275,4cyclictest0-21swapper/520:21:415
226202499275,4cyclictest0-21swapper/520:10:415
226202499275,4cyclictest0-21swapper/519:59:425
226202499275,4cyclictest0-21swapper/519:48:435
226202499275,4cyclictest0-21swapper/519:26:455
226202499275,4cyclictest0-21swapper/500:34:185
226202499275,4cyclictest0-21swapper/500:34:175
226202499275,4cyclictest0-21swapper/500:01:205
226202499270,3cyclictest2389610-21apt-get22:45:005
2262021992722,5cyclictest0-21swapper/421:50:014
226202499264,4cyclictest0-21swapper/523:39:225
226202499264,4cyclictest0-21swapper/522:22:295
226202499264,4cyclictest0-21swapper/522:00:315
226202499264,4cyclictest0-21swapper/521:38:345
226202499264,4cyclictest0-21swapper/520:54:375
226202499264,4cyclictest0-21swapper/520:32:395
226202499264,4cyclictest0-21swapper/519:15:465
2262024992620,1cyclictest0-21swapper/522:50:135
2262008992620,1cyclictest0-21swapper/022:30:180
2262008992620,1cyclictest0-21swapper/000:05:010
2262008992619,1cyclictest0-21swapper/021:00:130
226200899260,22cyclictest2302790-21awk20:15:180
226203099250,24cyclictest2374832-21awk22:20:007
226202499257,18cyclictest0-21swapper/523:50:215
226202499250,24cyclictest2333927-21apt-get21:10:125
226201699250,24cyclictest0-21swapper/323:10:173
226201299250,24cyclictest23162702sleep220:40:102
226201299250,24cyclictest23162702sleep220:40:102
226200999250,24cyclictest2265121-21cat19:15:001
2262008992521,1cyclictest0-21swapper/022:50:120
2262008992521,0cyclictest0-21swapper/021:50:180
226200899250,24cyclictest2451661-21sh00:30:000
226203099240,23cyclictest0-21swapper/722:50:117
226203099240,23cyclictest0-21swapper/700:10:127
226202999240,3cyclictest2436914-21perf00:05:006
226202999240,23cyclictest0-21swapper/619:50:106
2262024992420,1cyclictest0-21swapper/521:50:185
2262024992419,1cyclictest2339831-21apt-get21:20:125
2262012992422,1cyclictest2387048-21apt-get22:40:102
2262012992422,1cyclictest0-21swapper/219:25:022
226201299240,23cyclictest2320472-21ntpq20:45:162
2262009992423,1cyclictest2390026-21apt-get22:45:111
2262009992423,1cyclictest0-21swapper/119:50:101
2262008992421,2cyclictest2295629-21apt-get20:05:110
2262008992421,0cyclictest0-21swapper/019:10:130
2262008992419,1cyclictest0-21swapper/023:10:100
226200899240,21cyclictest2428348-21apt-get23:50:130
2262030992322,1cyclictest0-21swapper/719:30:117
2262030992321,1cyclictest0-21swapper/721:10:007
226203099230,22cyclictest2307422-21apt-get20:25:127
226203099230,22cyclictest0-21swapper/719:35:117
226203099230,1cyclictest0-21swapper/719:25:017
2262029992323,0cyclictest0-21swapper/621:25:136
2262029992323,0cyclictest0-21swapper/619:40:036
2262029992321,1cyclictest2368893-21apt22:10:016
226202999230,22cyclictest2398880-21apt-get23:00:126
226202999230,22cyclictest2389631-21appstreamcli22:45:026
226202999230,22cyclictest2351624-21apt-get21:40:106
226202999230,22cyclictest2283812-21apt-get19:45:126
226202999230,22cyclictest0-21swapper/620:55:116
226202999230,1cyclictest0-21swapper/622:40:126
226202499235,18cyclictest0-21swapper/522:11:315
226202499235,18cyclictest0-21swapper/521:16:355
226202499235,18cyclictest0-21swapper/519:37:455
226202499235,18cyclictest0-21swapper/500:12:195
2262024992320,3cyclictest0-21swapper/522:45:115
2262024992320,1cyclictest0-21swapper/523:10:115
226202499230,23cyclictest2451671-21ls00:30:005
226202499230,22cyclictest2286749-21apt-get19:50:105
226202199230,23cyclictest2271507-21munin-plugin-st19:25:004
226202199230,22cyclictest2271976-21apt-get19:25:124
226202199230,1cyclictest2374802-21cron22:20:014
226202199230,1cyclictest0-21swapper/422:35:124
226201699230,22cyclictest2410669-21apt-get23:20:123
226201699230,22cyclictest2388440-21ntpq22:40:183
226201699230,22cyclictest2301087-21perf20:15:003
226201699230,22cyclictest0-21swapper/322:10:193
226201699230,22cyclictest0-21swapper/322:05:033
226201699230,22cyclictest0-21swapper/321:05:133
226201699230,22cyclictest0-21swapper/320:00:033
226201699230,22cyclictest0-21swapper/300:35:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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