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2026-04-18 - 05:59

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 Sat Apr 18, 2026 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31557012237173,21sleep00-21swapper/019:09:480
31556232222164,46sleep60-21swapper/619:08:426
31556372210176,22sleep20-21swapper/219:08:542
31555562210160,39sleep40-21swapper/419:07:444
31556862207173,21sleep30-21swapper/319:09:353
31557022205171,21sleep10-21swapper/119:09:491
31555752205177,18sleep50-21swapper/519:08:005
31555772204171,21sleep70-21swapper/719:08:037
315595499260,25cyclictest0-21swapper/500:20:005
315594499250,24cyclictest3321089-21apt-get23:55:122
315594499250,24cyclictest0-21swapper/223:40:122
315593599250,24cyclictest3240852-21apt-get21:35:120
315593599250,24cyclictest0-21swapper/021:25:120
315595499240,23cyclictest3260846-21apt-get22:10:105
315595499240,23cyclictest3158675-21latency_hist19:15:015
315595499240,23cyclictest0-21swapper/519:15:125
315594499240,23cyclictest3179926-21munin-run19:50:002
315594499240,23cyclictest0-21swapper/220:50:102
315594499240,0cyclictest0-21swapper/222:15:112
3155960992321,1cyclictest0-21swapper/722:15:007
315596099230,22cyclictest3234887-21apt-get21:25:127
315596099230,22cyclictest0-21swapper/700:10:107
3155955992323,0cyclictest0-21swapper/620:45:116
315595599230,22cyclictest3162511-21apt-get19:20:016
315595599230,22cyclictest0-21swapper/623:20:116
315595599230,1cyclictest881-21mta-sts-daemon23:00:016
315595599230,1cyclictest881-21mta-sts-daemon23:00:016
315595599230,1cyclictest3274719-21awk22:34:596
315595599230,1cyclictest0-21swapper/600:30:136
315595499230,22cyclictest0-21swapper/521:30:115
315595499230,22cyclictest0-21swapper/520:35:005
315595099230,22cyclictest3323524-21munin-run00:00:004
315595099230,22cyclictest0-21swapper/422:45:114
3155948992321,1cyclictest3269424-21apt-get22:25:123
315594899230,22cyclictest3323518-21turbostat00:00:003
315594899230,22cyclictest3212034-21apt-get20:45:123
315594899230,22cyclictest0-21swapper/323:30:123
3155944992321,1cyclictest3272277-21apt-get22:30:112
3155944992320,2cyclictest401rcuc/221:20:002
315594499230,22cyclictest3202766-21apt-get20:30:022
315594499230,22cyclictest3191350-21munin-run20:10:012
315594499230,22cyclictest0-21swapper/222:55:002
3155940992322,1cyclictest3217733-21apt-get20:55:111
3155940992321,1cyclictest3188915-21apt-get20:05:121
315594099230,22cyclictest3340975-21idleruntime-cro00:30:011
315594099230,1cyclictest3243297-21systemctl21:39:591
315593599230,2cyclictest3182787-21awk19:55:010
315593599230,22cyclictest3246158-21munin-run21:44:590
315593599230,22cyclictest0-21swapper/023:40:000
3155960992222,0cyclictest0-21swapper/720:35:127
315596099220,22cyclictest3220183-21awk21:00:007
315596099220,22cyclictest0-21swapper/721:35:017
315596099220,21cyclictest3226307-21apt-get21:10:117
315596099220,21cyclictest0-21swapper/723:45:117
315596099220,21cyclictest0-21swapper/722:45:107
315596099220,21cyclictest0-21swapper/721:05:117
315596099220,21cyclictest0-21swapper/719:55:127
315596099220,1cyclictest3332802-21apt-get00:15:137
315596099220,1cyclictest3289685-21apt-get23:00:127
315596099220,1cyclictest3289685-21apt-get23:00:127
315596099220,1cyclictest0-21swapper/723:50:107
3155955992221,1cyclictest3294982-21basename23:10:006
3155955992221,1cyclictest3294982-21basename23:10:006
3155955992221,1cyclictest3278000-21apt-get22:40:126
3155955992221,1cyclictest0-21swapper/620:05:116
3155955992220,1cyclictest0-21swapper/619:55:116
3155955992220,1cyclictest0-21swapper/619:50:016
315595599220,21cyclictest3246575-21apt-get21:45:126
315595599220,21cyclictest0-21swapper/623:25:116
315595599220,21cyclictest0-21swapper/622:05:126
315595599220,21cyclictest0-21swapper/621:55:126
315595599220,21cyclictest0-21swapper/620:15:106
315595599220,21cyclictest0-21swapper/619:15:016
315595599220,1cyclictest3231616-21awk21:20:006
315595599220,0cyclictest0-21swapper/623:15:116
3155954992221,1cyclictest3338529-21apt-get00:25:125
3155954992221,1cyclictest0-21swapper/520:55:115
3155954992220,2cyclictest3188500-21awk20:05:005
3155954992220,1cyclictest3168918-21apt-get19:30:125
315595499220,21cyclictest3251838-21cron21:55:005
315595499220,21cyclictest0-21swapper/523:05:135
315595499220,21cyclictest0-21swapper/523:05:135
315595499220,21cyclictest0-21swapper/522:55:135
315595499220,21cyclictest0-21swapper/522:55:135
315595499220,1cyclictest0-21swapper/520:45:115
315595499220,1cyclictest0-21swapper/519:20:115
315595499220,0cyclictest0-21swapper/519:55:125
3155950992220,1cyclictest0-21swapper/420:45:114
315595099220,21cyclictest3240173-21munin-run21:35:004
315595099220,21cyclictest0-21swapper/423:35:114
315595099220,21cyclictest0-21swapper/423:05:134
315595099220,21cyclictest0-21swapper/423:05:134
315595099220,21cyclictest0-21swapper/422:05:124
315595099220,21cyclictest0-21swapper/421:10:114
315595099220,21cyclictest0-21swapper/420:30:024
3155948992221,1cyclictest3226307-21apt-get21:10:113
3155948992221,1cyclictest0-21swapper/319:50:013
3155948992220,1cyclictest3288976-21apt-get23:00:003
3155948992220,1cyclictest3288976-21apt-get23:00:003
315594899220,21cyclictest3186064-21apt-get20:00:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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