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2026-03-15 - 09:15

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 Mar 15, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24759502230191,26sleep20-21swapper/219:09:442
24757682221162,18sleep70-21swapper/719:07:087
24759032220166,18sleep30-21swapper/319:09:043
24758052220165,44sleep60-21swapper/619:07:396
24756612214183,20sleep40-21swapper/419:05:354
24759622210175,22sleep50-21swapper/519:09:545
24758922210179,20sleep10-21swapper/119:08:551
24758442204177,17sleep00-21swapper/019:08:140
2476208992422,1cyclictest0-21swapper/720:49:597
247620899240,23cyclictest2664082-21munin-run00:35:007
247620899240,22cyclictest2539938-21awk21:00:007
2476205992422,1cyclictest2641351-21apt-get23:55:126
2476205992422,1cyclictest2597827-21munin-run22:40:006
2476203992422,1cyclictest2511506-21apt-get20:10:125
247619699240,23cyclictest0-21swapper/300:35:123
2476192992422,1cyclictest2623807-21awk23:25:011
2476192992422,1cyclictest2623807-21awk23:25:001
247618799240,23cyclictest2491085-21turbostat19:35:010
247618799240,23cyclictest0-21swapper/023:45:120
2476208992322,1cyclictest2502931-21apt-get19:55:127
2476208992321,1cyclictest0-21swapper/722:30:167
2476208992321,1cyclictest0-21swapper/700:20:007
247620899230,22cyclictest0-21swapper/723:45:137
247620899230,22cyclictest0-21swapper/722:25:127
247620899230,22cyclictest0-21swapper/721:40:107
247620899230,22cyclictest0-21swapper/721:00:127
247620599230,1cyclictest2575147-21apt-get22:00:126
247620599230,0cyclictest0-21swapper/600:10:116
2476203992323,0cyclictest0-21swapper/519:40:125
2476203992321,1cyclictest2514357-21apt-get20:15:135
247620399230,22cyclictest2614970-21munin-run23:10:015
247620399230,22cyclictest2533931-21apt-get20:50:005
247620399230,22cyclictest0-21swapper/522:30:115
247620399230,22cyclictest0-21swapper/519:50:105
247619999230,22cyclictest0-21swapper/423:05:134
247619999230,22cyclictest0-21swapper/422:15:134
247619999230,22cyclictest0-21swapper/400:15:134
2476196992322,1cyclictest2623809-21munin-run23:25:013
2476196992322,1cyclictest2623809-21munin-run23:25:013
2476196992321,1cyclictest2537474-21apt-get20:55:113
2476193992322,0cyclictest0-21swapper/223:05:132
247619399230,23cyclictest2635653-21apt-get23:45:132
247619399230,23cyclictest2609686-21apt-get23:00:112
247619399230,22cyclictest0-21swapper/223:55:012
247619299230,22cyclictest0-21swapper/122:45:111
247619299230,21cyclictest2617827-21awk23:15:011
247619299230,21cyclictest2617827-21awk23:15:011
2476187992322,1cyclictest0-21swapper/020:49:590
2476187992321,1cyclictest2655500-21idleruntime-cro00:20:000
2476187992321,1cyclictest2500081-21apt-get19:50:100
247618799230,22cyclictest2580431-21munin-run22:09:590
247618799230,22cyclictest0-21swapper/023:55:120
247618799230,22cyclictest0-21swapper/000:35:000
2476208992221,1cyclictest0-21swapper/722:55:107
2476208992220,1cyclictest0-21swapper/723:50:127
2476208992220,1cyclictest0-21swapper/721:20:107
247620899220,21cyclictest0-21swapper/723:55:127
247620899220,21cyclictest0-21swapper/723:30:127
247620899220,21cyclictest0-21swapper/720:50:117
247620899220,21cyclictest0-21swapper/719:50:107
247620899220,21cyclictest0-21swapper/719:30:137
247620899220,21cyclictest0-21swapper/700:10:117
247620899220,21cyclictest0-21swapper/700:05:117
247620899220,1cyclictest2522933-21apt-get20:30:127
247620899220,1cyclictest0-21swapper/721:30:127
247620899220,0cyclictest0-21swapper/700:25:137
2476205992222,0cyclictest0-21swapper/622:25:126
2476205992221,1cyclictest2494381-21apt-get19:40:116
2476205992220,1cyclictest2557306-21sh21:30:006
2476205992220,1cyclictest0-21swapper/619:20:016
247620599220,21cyclictest0-21swapper/623:50:116
247620599220,21cyclictest0-21swapper/620:50:116
247620599220,21cyclictest0-21swapper/620:15:126
247620599220,21cyclictest0-21swapper/619:30:126
247620599220,1cyclictest0-21swapper/622:14:596
247620599220,1cyclictest0-21swapper/621:10:116
2476203992222,0cyclictest0-21swapper/523:45:115
2476203992221,1cyclictest2595392-21apt-get22:35:135
2476203992220,1cyclictest2505805-21apt-get20:00:115
2476203992220,1cyclictest2488239-21munin-run19:30:005
247620399220,21cyclictest2520082-21apt-get20:25:125
247620399220,21cyclictest0-21swapper/521:35:125
247620399220,1cyclictest2606397-21munin-run22:55:015
2476199992219,2cyclictest2513932-21idleruntime-cro20:15:014
247619999220,21cyclictest0-21swapper/421:50:114
2476196992221,1cyclictest0-21swapper/300:05:133
2476196992220,1cyclictest2566312-21apt-get21:45:123
2476196992220,1cyclictest2502509-21turbostat19:55:013
247619699220,21cyclictest2554887-21apt-get21:25:123
247619699220,21cyclictest0-21swapper/323:50:113
247619699220,21cyclictest0-21swapper/323:35:133
247619699220,21cyclictest0-21swapper/322:15:143
247619699220,21cyclictest0-21swapper/322:10:123
247619699220,21cyclictest0-21swapper/321:15:123
247619699220,0cyclictest0-21swapper/322:45:103
2476193992222,0cyclictest0-21swapper/219:10:122
2476193992221,1cyclictest2629930-21apt-get23:35:112
2476193992221,1cyclictest0-21swapper/223:10:142
2476193992221,1cyclictest0-21swapper/223:10:132
2476193992221,1cyclictest0-21swapper/222:00:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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