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2026-05-16 - 08:50

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 100 highest latencies:
System rackeslot4s.osadl.org (updated Sat May 16, 2026 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2275545995249,2cyclictest2414986-21kworker/u8:1+flush-259:021:25:211
2275550995047,2cyclictest2518770-21kworker/u8:5+events_unbound23:50:243
2275550994744,2cyclictest2311521-21kworker/u8:2+flush-259:020:10:213
2275550994742,3cyclictest2337406-21latency_hist20:10:013
2275542994639,5cyclictest2539091-21latency_hist23:25:010
2275550994340,2cyclictest2414986-21kworker/u8:1+events_unbound23:10:213
2275545994340,2cyclictest2301559-21kworker/u8:1+flush-259:020:30:441
2275542994339,3cyclictest2523926-21apt-get23:10:100
2275545994239,2cyclictest2311521-21kworker/u8:2+flush-259:019:55:301
2275545994239,2cyclictest2275749-21kworker/u8:3+flush-259:019:20:241
2275550994139,1cyclictest2518770-21kworker/u8:5+flush-259:023:30:213
2275550994138,2cyclictest2456879-21kworker/u8:0+flush-259:022:15:003
2275550994037,2cyclictest2425360-21kworker/u8:3+flush-259:021:45:233
2275550994036,3cyclictest2575552-21kworker/u8:1+events_unbound00:20:453
2275550994036,3cyclictest2575552-21kworker/u8:1+events_unbound00:20:443
2275545994037,2cyclictest2285470-21kworker/u8:0+events_unbound19:30:241
2275545994036,3cyclictest2435529-21kworker/u8:2+events_unbound22:56:441
2275545994036,3cyclictest2275749-21kworker/u8:3+events_unbound19:15:251
2275542994033,5cyclictest2590985-21latency_hist00:15:000
2275550993932,5cyclictest2445117-21ntpq21:50:213
2275546993934,3cyclictest2575552-21kworker/u8:1+flush-259:000:10:152
2275550993835,2cyclictest2311521-21kworker/u8:2+events_unbound19:55:223
2275550993834,3cyclictest2518770-21kworker/u8:5+flush-259:023:05:213
2275550993834,3cyclictest2435529-21kworker/u8:2+events_unbound23:36:133
2275550993834,3cyclictest2363106-21kworker/u8:2+events_unbound21:12:453
2275545993834,2cyclictest1564019-21kworker/u8:2+flush-259:019:10:441
2275550993733,3cyclictest2414986-21kworker/u8:1+events_unbound22:49:453
2275550993733,2cyclictest2414986-21kworker/u8:1+flush-259:021:30:173
2275546993731,4cyclictest2451084-21latency_hist22:00:002
2275546993729,5cyclictest2595299-21ntpq00:15:222
2275545993734,2cyclictest2414986-21kworker/u8:1+events_unbound22:46:031
2275545993733,3cyclictest2456879-21kworker/u8:0+events_unbound22:22:441
2275545993733,3cyclictest2435529-21kworker/u8:2+events_unbound22:06:441
2275545993733,3cyclictest2414986-21kworker/u8:1+events_unbound22:10:141
2275542993731,4cyclictest2379214-21apt-get20:50:120
2275542993731,4cyclictest2357331-21kworker/u8:0+flush-259:021:20:250
2275550993633,2cyclictest2575552-21kworker/u8:1+events_unbound00:30:013
2275550993633,2cyclictest2575552-21kworker/u8:1+events_unbound00:30:003
2275550993633,2cyclictest2456879-21kworker/u8:0+flush-259:022:20:233
2275550993632,3cyclictest2435529-21kworker/u8:2+events_unbound22:54:453
2275550993632,3cyclictest2425360-21kworker/u8:3+flush-259:021:35:213
2275550993632,3cyclictest2357331-21kworker/u8:0+events_unbound20:29:443
2275545993633,2cyclictest2456879-21kworker/u8:0+events_unbound22:15:221
2275545993632,3cyclictest2591213-21kworker/u8:0+events_unbound00:28:451
2275545993632,3cyclictest2591213-21kworker/u8:0+events_unbound00:28:441
2275545993632,3cyclictest2357331-21kworker/u8:0+flush-259:020:50:421
2275550993532,2cyclictest2357331-21kworker/u8:0+events_unbound21:07:443
2275545993531,3cyclictest2518770-21kworker/u8:5+events_unbound23:31:121
2275542993531,3cyclictest2435529-21kworker/u8:2+flush-259:022:10:260
2275550993431,2cyclictest2456879-21kworker/u8:0+flush-259:022:25:213
2275550993431,2cyclictest2456879-21kworker/u8:0+flush-259:022:15:203
2275550993431,2cyclictest2363106-21kworker/u8:2+events_unbound20:56:453
2275550993431,2cyclictest2301559-21kworker/u8:1+events_unbound20:31:453
2275550993430,3cyclictest2503046-21kworker/u8:0+events_unbound23:02:453
2275550993430,3cyclictest2275749-21kworker/u8:3+events_unbound19:27:443
2275545993428,4cyclictest252-21systemd-journal22:32:431
2275550993331,2cyclictest2373414-21kworker/u8:3+events_unbound20:47:453
2275550993330,2cyclictest2518770-21kworker/u8:5+events_unbound23:18:443
2275550993330,2cyclictest2435529-21kworker/u8:2+flush-259:000:00:003
2275550993329,3cyclictest2357331-21kworker/u8:0+events_unbound20:51:453
2275546993326,5cyclictest252-21systemd-journal21:15:432
2275545993330,3cyclictest2357331-21kworker/u8:0+events_unbound21:10:441
2275545993330,2cyclictest2591213-21kworker/u8:0+flush-259:000:15:211
2275545993330,2cyclictest2575552-21kworker/u8:1+events_unbound00:38:261
2275545993330,2cyclictest2435529-21kworker/u8:2+events_unbound23:21:111
2275545993329,3cyclictest2607062-21kworker/u8:2+events_unbound00:32:441
2275545993329,3cyclictest2414986-21kworker/u8:1+events_unbound22:00:171
2275550993228,3cyclictest2306728-21/usr/sbin/munin19:40:133
2275546993225,5cyclictest252-21systemd-journal23:01:052
2275545993229,2cyclictest2414986-21kworker/u8:1+events_unbound21:30:501
2275545993229,2cyclictest2357331-21kworker/u8:0+events_unbound21:21:451
2275545993228,3cyclictest2301559-21kworker/u8:1+events_unbound20:05:231
2275542993228,3cyclictest2435529-21kworker/u8:2+flush-259:021:50:140
2275542993227,4cyclictest2472140-21kworker/u8:3+flush-259:022:35:220
2275550993129,2cyclictest2357331-21kworker/u8:0+flush-259:021:20:243
2275550993128,2cyclictest2301559-21kworker/u8:1+events_unbound20:36:443
2275550993127,3cyclictest2414986-21kworker/u8:1+events_unbound22:01:443
2275545993128,2cyclictest2435529-21kworker/u8:2+events_unbound22:27:451
2275545993127,3cyclictest2518770-21kworker/u8:5+events_unbound23:45:131
2275545993125,4cyclictest252-21systemd-journal20:05:001
2275542993127,3cyclictest2357331-21kworker/u8:0+flush-259:021:05:250
2275550993027,2cyclictest2472140-21kworker/u8:3+events_unbound22:42:433
2275550993027,2cyclictest2414986-21kworker/u8:1+events_unbound22:05:243
2275550993024,2cyclictest1564019-21kworker/u8:2+events_unbound19:10:223
2275545993027,3cyclictest2363106-21kworker/u8:2+flush-259:021:15:191
2275545993027,2cyclictest2575552-21kworker/u8:1+flush-259:000:20:211
2275545993027,2cyclictest2575552-21kworker/u8:1+flush-259:000:20:211
2275545993026,3cyclictest2518770-21kworker/u8:5+events_unbound23:58:431
2275545993026,3cyclictest2301559-21kworker/u8:1+events_unbound20:38:431
2275542993023,5cyclictest2563894-21ntpq23:45:210
2275542993022,5cyclictest2611084-21ntpq00:30:200
2275550992926,2cyclictest2575552-21kworker/u8:1+events_unbound00:38:453
2275546992923,4cyclictest2617423-21cat00:40:012
2275545992925,3cyclictest2275749-21kworker/u8:3+events_unbound19:28:431
2275545992923,4cyclictest252-21systemd-journal21:02:441
2275542992926,2cyclictest2394418-21kworker/u8:3+events_unbound21:05:010
227554299290,27cyclictest1-21systemd19:22:430
2275550992825,3cyclictest2518770-21kworker/u8:5+events_unbound23:41:133
2275550992825,2cyclictest2472140-21kworker/u8:3+flush-259:022:35:163
2275546992822,4cyclictest2420175-21latency_hist21:30:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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