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2026-03-27 - 03:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System (updated Thu Mar 26, 2026 12:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2136209994239,2cyclictest2359167-21kworker/u8:2+events_unbound10:50:153
2136209993532,2cyclictest2416302-21kworker/u8:1+flush-259:011:50:233
2136209993532,2cyclictest2416302-21kworker/u8:1+flush-259:011:50:233
2136209993532,2cyclictest2255355-21kworker/u8:4+events_unbound10:40:143
2136205993428,4cyclictest252-21systemd-journal10:04:292
2136205993329,3cyclictest3282653-21kworker/u8:1+flush-259:007:45:012
2136209993128,2cyclictest2229545-21kworker/u8:1+events_unbound08:50:243
2136199993128,2cyclictest2328220-21kworker/u8:1+events_unbound10:25:150
2136209993027,2cyclictest3282653-21kworker/u8:1+events_unbound07:25:203
2136209993027,2cyclictest2245024-21kworker/u8:0+events_unbound09:25:193
2136209993026,3cyclictest2131239-21kworker/u8:0+events_unbound07:35:213
2136209992925,2cyclictest2198633-21kworker/u8:3+events_unbound09:05:173
2136209992825,2cyclictest2287044-21kworker/u8:3+events_unbound09:40:223
2136209992825,2cyclictest2198633-21kworker/u8:3+flush-259:008:20:233
2136205992823,3cyclictest2229758-21/usr/sbin/munin08:40:132
2136201992822,4cyclictest2281639-21latency_hist09:30:001
2136205992723,3cyclictest2287044-21kworker/u8:3+flush-259:009:45:172
2136201992723,3cyclictest2375319-21apt-get11:00:111
2136209992624,2cyclictest2296724-21kworker/u8:0+flush-259:010:15:243
2136209992623,2cyclictest2436789-21kworker/u8:0+events_unbound12:35:153
2136209992623,2cyclictest2401065-21kworker/u8:0+events_unbound11:45:153
2136209992623,2cyclictest2385393-21kworker/u8:3+flush-259:011:40:243
2136209992622,3cyclictest2426611-21kworker/u8:2+events_unbound12:25:223
2136209992622,3cyclictest2131239-21kworker/u8:0+flush-259:007:55:143
2136209992622,2cyclictest2436789-21kworker/u8:0+events_unbound12:05:143
2136199992623,2cyclictest2131239-21kworker/u8:0+events_unbound08:04:280
2136199992622,3cyclictest2136404-21apt-get07:10:110
2136199992620,5cyclictest2337573-21ntpq10:20:210
2136209992522,2cyclictest2255355-21kworker/u8:4+events_unbound09:20:223
2136205992522,2cyclictest2328220-21kworker/u8:1+flush-259:011:10:132
2136205992521,3cyclictest2255354-21kworker/u8:2+flush-259:009:05:002
2136205992518,5cyclictest2349612-21diskstats10:35:132
2136199992522,2cyclictest2198633-21kworker/u8:3+flush-259:008:35:240
2136205992418,4cyclictest2323045-21latency_hist10:10:012
2136201992419,4cyclictest2265712-21apt-get09:15:001
2136199992421,2cyclictest2287044-21kworker/u8:3+flush-259:010:00:150
2136209992320,2cyclictest2436789-21kworker/u8:0+flush-259:012:25:003
2136209992320,2cyclictest2401065-21kworker/u8:0+events_unbound11:27:073
2136209992320,2cyclictest2395676-21kworker/u8:2+events_unbound11:20:213
2136209992320,2cyclictest2328220-21kworker/u8:1+events_unbound10:30:283
2136209992320,2cyclictest2296724-21kworker/u8:0+events_unbound09:55:153
2136205992319,3cyclictest2198633-21kworker/u8:3+flush-259:008:55:182
2136201992317,4cyclictest2426587-21latency_hist11:50:001
2136199992319,3cyclictest2229545-21kworker/u8:1+events_unbound09:00:150
2136209992219,2cyclictest2426611-21kworker/u8:2+events_unbound12:10:193
2136209992219,2cyclictest2198633-21kworker/u8:3+events_unbound08:25:163
2136209992219,2cyclictest1415264-21kworker/u8:2+events_unbound07:15:153
2136209992218,3cyclictest2281656-21kworker/u8:1+events_unbound09:30:153
2136209992218,3cyclictest2281656-21kworker/u8:1+events_unbound09:30:153
2136201992218,2cyclictest0-21swapper/109:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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