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2026-05-14 - 11:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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.

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 rackbslot5s.osadl.org (updated Thu May 14, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
792808996636,26cyclictest833001-21cron21:05:000
792812995544,7cyclictest846395-21grep21:40:241
792812995340,9cyclictest231ktimers/120:05:131
792812995340,9cyclictest231ktimers/120:05:121
792808995222,25cyclictest0-21swapper/000:00:250
792821995145,4cyclictest792317-21kworker/u8:4+events_unbound20:01:583
792808995122,25cyclictest0-21swapper/023:40:240
792812995041,5cyclictest886283-21cron23:40:011
792812994938,5cyclictest889722-21idleruntime-cro23:50:001
792812994835,10cyclictest231ktimers/122:50:111
792812994834,10cyclictest231ktimers/120:00:141
792812994738,5cyclictest807188-21cron19:50:011
792808994619,4cyclictest0-21swapper/021:20:270
792808994619,4cyclictest0-21swapper/021:20:260
792808994616,6cyclictest0-21swapper/022:30:260
792808994616,6cyclictest0-21swapper/022:30:250
792821994531,11cyclictest391ktimers/322:30:133
792821994531,11cyclictest391ktimers/322:30:123
792808994517,3cyclictest0-21swapper/000:30:000
792817994434,7cyclictest881188-21cron23:25:002
792812994335,4cyclictest834712-21cron21:10:001
792812994332,7cyclictest853214-21grep22:00:251
792808994331,7cyclictest0-21swapper/023:05:000
792821994229,8cyclictest391ktimers/322:15:123
792808994233,6cyclictest890946-21grep23:50:250
792808994233,6cyclictest890946-21grep23:50:250
792821994132,5cyclictest845140-21cron21:40:003
792812994130,7cyclictest829810-21kworker/u8:3-ext4-rsv-conversion21:00:011
792808994121,16cyclictest0-21swapper/020:10:260
792808994121,16cyclictest0-21swapper/020:10:250
792808994115,5cyclictest0-21swapper/020:55:200
792821994031,4cyclictest0-21swapper/322:22:213
792821994031,4cyclictest0-21swapper/322:22:213
792808994033,4cyclictest845151-21latency_hist21:40:000
792812993928,8cyclictest840045-21auditctl21:25:001
792812993928,8cyclictest840045-21auditctl21:25:001
792808993931,4cyclictest796962-21apt-key19:20:010
792817993832,3cyclictest865848-21sendmail22:40:002
792817993828,6cyclictest0-21swapper/200:05:002
792812993827,8cyclictest891009-21unixbench_singl23:50:261
792812993827,8cyclictest891009-21unixbench_singl23:50:261
792821993729,4cyclictest0-21swapper/321:05:153
792821993728,6cyclictest879045-21unixbench_singl23:15:263
792817993729,4cyclictest0-21swapper/223:55:012
792817993729,4cyclictest0-21swapper/223:55:002
792812993725,8cyclictest0-21swapper/121:05:001
792808993730,4cyclictest838117-21kthreadd21:20:000
792808993716,5cyclictest0-21swapper/022:15:250
792821993627,5cyclictest0-21swapper/323:05:243
792821993614,13cyclictest792801-21cyclictest22:10:143
792817993626,6cyclictest825755-21grep20:40:252
792808993626,6cyclictest0-21swapper/022:00:240
792808993626,6cyclictest0-21swapper/019:15:000
792821993527,4cyclictest872652-21cron23:00:013
792821993527,4cyclictest0-21swapper/323:35:253
792821993523,6cyclictest131rcu_preempt19:54:463
792817993526,6cyclictest311ktimers/222:00:122
792812993526,4cyclictest0-21swapper/120:55:011
792812993525,7cyclictest231ktimers/122:10:111
792812993523,8cyclictest858800-21sendmail22:20:001
792817993427,3cyclictest0-21swapper/219:35:012
792817993426,4cyclictest0-21swapper/223:30:252
792817993426,4cyclictest0-21swapper/222:20:252
792817993426,4cyclictest0-21swapper/222:20:242
792817993426,4cyclictest0-21swapper/220:25:152
792817993426,4cyclictest0-21swapper/220:25:152
792817993424,6cyclictest869658-21grep22:50:142
792817993424,6cyclictest0-21swapper/223:20:002
792812993427,5cyclictest145-21jbd2/mmcblk1p2-800:10:281
792812993423,7cyclictest906739-21grep00:35:241
792808993426,4cyclictest0-21swapper/020:45:270
792808993423,7cyclictest0-21swapper/019:25:260
792821993325,4cyclictest0-21swapper/322:35:263
792821993324,6cyclictest817632-21sh20:20:013
792821993323,7cyclictest381rcuc/323:45:123
792821993323,4cyclictest131rcu_preempt00:18:283
792821993319,9cyclictest0-21swapper/319:45:003
792821993315,6cyclictest792801-21cyclictest19:15:133
792817993326,4cyclictest0-21swapper/200:15:152
792817993324,4cyclictest0-21swapper/221:27:112
792812993325,5cyclictest0-21swapper/119:40:241
792812993325,4cyclictest0-21swapper/121:10:281
792812993324,5cyclictest803788-21munin-plugin-st19:40:001
79282199326,7cyclictest40-21ksoftirqd/300:10:013
792821993226,4cyclictest794564-21latency_hist19:15:013
792821993222,7cyclictest381rcuc/322:28:483
792817993226,3cyclictest0-21swapper/220:40:022
792817993225,4cyclictest834711-21munin-plugin-st21:10:012
792817993225,4cyclictest822748-21cron20:35:002
792817993225,4cyclictest0-21swapper/223:00:002
792817993224,5cyclictest858791-21cron22:20:002
792817993223,4cyclictest0-21swapper/219:20:162
792812993224,4cyclictest0-21swapper/120:10:251
792812993224,4cyclictest0-21swapper/120:10:251
792808993225,3cyclictest0-21swapper/022:15:010
792808993225,3cyclictest0-21swapper/020:20:010
792808993222,6cyclictest0-21swapper/020:50:160
79282199318,14cyclictest0-21swapper/300:35:013
79282199317,5cyclictest40-21ksoftirqd/320:15:013
79282199317,5cyclictest40-21ksoftirqd/320:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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