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2025-12-25 - 11:11

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 Thu Dec 25, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25502302251179,26sleep60-21swapper/619:08:276
25501322237178,47sleep20-21swapper/219:07:012
25502452229167,49sleep30-21swapper/319:08:393
25503372222170,17sleep00-21swapper/019:09:570
25502552219166,41sleep40-21swapper/419:08:484
25502382214178,23sleep50-21swapper/519:08:335
25500422211161,39sleep70-21swapper/719:05:477
25500452207174,21sleep10-21swapper/119:05:491
255056699290,28cyclictest2606531-21awk20:44:591
2550565992819,1cyclictest2624194-21cron21:14:590
2550566992721,5cyclictest0-21swapper/100:20:001
255058399269,4cyclictest0-21swapper/723:59:057
255058399269,4cyclictest0-21swapper/723:48:077
255058399269,4cyclictest0-21swapper/721:58:167
255058399269,0cyclictest0-21swapper/722:31:147
2550577992620,5cyclictest0-21swapper/522:35:125
2550577992620,5cyclictest0-21swapper/521:20:005
2550566992623,2cyclictest0-21swapper/122:50:121
255056699260,25cyclictest0-21swapper/121:10:131
255056699260,0cyclictest0-21swapper/100:10:141
2550577992519,5cyclictest2658763-21munin-run22:15:005
2550566992523,2cyclictest0-21swapper/100:35:111
2550566992520,4cyclictest0-21swapper/122:15:011
255056699250,21cyclictest0-21swapper/120:45:121
2550565992521,3cyclictest2579734-21apt-get20:00:010
255056599250,24cyclictest0-21swapper/023:40:120
255058399240,23cyclictest2557327-21apt-get19:20:127
255057999240,24cyclictest0-21swapper/620:30:136
2550577992420,3cyclictest2647337-21munin-run21:55:015
2550577992419,4cyclictest2661622-21munin-run22:20:015
255057799240,22cyclictest0-21swapper/500:00:155
2550572992422,1cyclictest0-21swapper/320:20:023
255057299240,23cyclictest2557327-21apt-get19:20:133
2550568992421,2cyclictest2563032-21taskset19:30:112
255056899240,23cyclictest2579760-21awk20:00:012
2550566992423,1cyclictest0-21swapper/123:05:111
2550566992421,3cyclictest0-21swapper/122:48:031
255056699240,21cyclictest0-21swapper/100:00:011
255056599240,2cyclictest2650630-21apt-get22:00:130
255056599240,23cyclictest2673317-21grep22:40:010
255058399230,22cyclictest2562597-21sh19:30:007
255057799230,22cyclictest681-21NetworkManager21:05:015
255057799230,22cyclictest2737044-21munin-run00:30:005
255057799230,22cyclictest2716441-21munin-run23:55:015
255057799230,22cyclictest0-21swapper/520:45:125
255057799230,22cyclictest0-21swapper/519:35:125
255057799230,1cyclictest2595507-21apt-get20:25:125
255057499230,22cyclictest0-21swapper/421:30:134
255057299230,22cyclictest2585729-21munin-run20:10:003
255057299230,22cyclictest0-21swapper/319:50:123
2550568992321,1cyclictest0-21swapper/221:15:122
255056899230,23cyclictest2630213-21awk21:25:002
255056899230,22cyclictest2696612-21apt-get23:20:122
255056899230,22cyclictest2696612-21apt-get23:20:112
255056899230,22cyclictest0-21swapper/221:55:112
255056899230,22cyclictest0-21swapper/219:35:122
255056699230,3cyclictest0-21swapper/121:55:111
255056699230,22cyclictest0-21swapper/100:05:011
2550565992321,1cyclictest0-21swapper/021:55:110
255056599230,22cyclictest2699061-21basename23:25:010
255056599230,22cyclictest2699061-21basename23:25:000
255056599230,22cyclictest0-21swapper/023:25:150
255056599230,22cyclictest0-21swapper/022:10:120
255056599230,1cyclictest2679045-21perf22:50:000
255058399229,0cyclictest0-21swapper/723:37:077
255058399229,0cyclictest0-21swapper/721:03:217
255058399229,0cyclictest0-21swapper/720:52:237
255058399229,0cyclictest0-21swapper/720:30:247
255058399229,0cyclictest0-21swapper/700:21:037
2550583992219,2cyclictest2679461-21apt-get22:50:137
255058399220,22cyclictest2740319-21http00:35:117
255058399220,22cyclictest2673752-21apt-get22:40:127
255058399220,21cyclictest2583299-21apt-get20:05:147
255058399220,21cyclictest0-21swapper/723:30:137
255058399220,1cyclictest2623051-21sshd21:10:187
2550579992221,1cyclictest0-21swapper/621:05:016
255057999220,21cyclictest0-21swapper/600:35:106
255057999220,1cyclictest2725612-21munin-run00:10:006
255057999220,1cyclictest0-21swapper/619:25:006
2550577992221,1cyclictest0-21swapper/522:00:015
2550577992220,2cyclictest2601213-21apt-get20:35:135
2550577992220,1cyclictest2731758-21apt-get00:20:115
2550577992220,1cyclictest2577311-21apt-get19:55:135
255057799220,21cyclictest0-21swapper/523:15:135
255057799220,21cyclictest0-21swapper/523:15:125
255057799220,21cyclictest0-21swapper/522:40:125
255057799220,21cyclictest0-21swapper/522:30:145
255057799220,21cyclictest0-21swapper/519:50:115
255057799220,21cyclictest0-21swapper/500:10:135
2550574992222,0cyclictest0-21swapper/419:50:114
2550574992221,1cyclictest0-21swapper/422:00:134
2550574992220,1cyclictest2693330-21idleruntime-cro23:15:014
2550574992220,1cyclictest2673319-21cut22:40:004
255057499220,22cyclictest0-21swapper/423:00:004
255057499220,21cyclictest2664909-21apt-get22:25:104
255057499220,1cyclictest2627133-21apt-config21:20:004
255057299220,22cyclictest2723129-21apt-get00:05:133
255057299220,22cyclictest0-21swapper/321:40:003
255057299220,22cyclictest0-21swapper/321:10:003
255057299220,22cyclictest0-21swapper/320:30:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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