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2026-06-05 - 20:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot1s.osadl.org (updated Fri Jun 05, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
953221200,3sleep20-21swapper/209:17:502
953221200,3sleep20-21swapper/209:17:502
953221200,3sleep20-21swapper/209:17:502
53942880,2chrt0-21swapper/210:32:552
168022700,3sleep20-21swapper/208:08:072
168022700,3sleep20-21swapper/208:08:072
277932580,1sleep20-21swapper/210:03:082
277932580,1sleep20-21swapper/210:03:082
51092520,2sleep05105-21cat10:32:450
51092520,2sleep05105-21cat10:32:450
309102520,3sleep30-21swapper/311:38:093
309102520,3sleep30-21swapper/311:38:093
309102520,3sleep30-21swapper/311:38:093
309102520,3sleep30-21swapper/311:38:093
30022520,1sleep03184-21idleruntime11:52:580
30022520,1sleep03184-21idleruntime11:52:580
30022520,1sleep03184-21idleruntime11:52:580
30022520,1sleep03184-21idleruntime11:52:580
225972490,2sleep122594-21latency_hist09:52:461
225972490,2sleep122594-21latency_hist09:52:461
31662480,3sleep30-21swapper/307:32:583
233902480,2sleep0171ktimers/011:18:080
233902480,2sleep0171ktimers/011:18:080
276602450,2sleep10-21swapper/110:03:071
276602450,2sleep10-21swapper/110:03:071
27751994334,7cyclictest23854-21idleruntime-cro11:22:451
27751994334,7cyclictest23854-21idleruntime-cro11:22:451
202032430,1chrt281ktimers/111:12:501
202032430,1chrt281ktimers/111:12:501
188952430,3sleep10-21swapper/112:33:061
188952430,3sleep10-21swapper/112:33:061
47472420,2sleep04838-21latency_hist11:57:570
47472420,2sleep04838-21latency_hist11:57:570
47472420,2sleep04838-21latency_hist11:57:570
47472420,2sleep04838-21latency_hist11:57:570
244622420,3chrt0-21swapper/309:57:473
244622420,3chrt0-21swapper/309:57:473
103352410,2sleep110396-21grep09:18:061
103352410,2sleep110396-21grep09:18:061
27750994031,7cyclictest29461-21idleruntime-cro11:37:450
27750994031,7cyclictest29461-21idleruntime-cro11:37:450
27750994031,7cyclictest29461-21idleruntime-cro11:37:450
239202400,2sleep20-21swapper/208:28:012
239202400,2sleep20-21swapper/208:28:012
318982380,4sleep30-21swapper/310:17:453
318982380,4sleep30-21swapper/310:17:453
318982380,4sleep30-21swapper/310:17:453
27751993827,9cyclictest26952-21threads11:28:061
27751993827,9cyclictest26952-21threads11:28:061
27751993629,5cyclictest5105-21cat10:32:451
27751993629,5cyclictest5105-21cat10:32:451
271642360,1sleep20-21swapper/208:37:582
271642360,1sleep20-21swapper/208:37:582
200872360,3sleep20-21swapper/208:18:002
200872360,3sleep20-21swapper/208:18:002
160782360,1sleep115945-21/usr/sbin/munin12:27:571
160782360,1sleep115945-21/usr/sbin/munin12:27:571
127492360,4sleep20-21swapper/207:58:022
127492360,4sleep20-21swapper/207:58:022
27750993527,6cyclictest14436-21head12:22:570
27750993527,6cyclictest14436-21head12:22:570
27750993527,6cyclictest14436-21head12:22:570
27750993526,7cyclictest9223-21netstat12:08:020
27750993526,7cyclictest9223-21netstat12:08:020
27750993526,7cyclictest9223-21netstat12:08:020
88302340,3sleep00-21swapper/009:13:050
88302340,3sleep00-21swapper/009:13:050
88302340,3sleep00-21swapper/009:13:050
27750993427,5cyclictest5156-21unixbench_multi09:03:060
27750993427,5cyclictest5156-21unixbench_multi09:03:060
21692340,3chrt0-21swapper/010:23:000
21692340,3chrt0-21swapper/010:23:000
21692340,3chrt0-21swapper/010:23:000
164582340,3sleep20-21swapper/209:33:052
164582340,3sleep20-21swapper/209:33:052
27750993325,6cyclictest6242-21latency_hist07:42:440
27750993322,9cyclictest0-21swapper/008:12:550
27750993322,9cyclictest0-21swapper/008:12:550
27751993224,6cyclictest12362-21proc_pri09:23:041
27751993224,6cyclictest12362-21proc_pri09:23:041
27750993225,5cyclictest2624-21latency08:57:590
27750993225,5cyclictest2624-21latency08:57:590
31892310,4sleep10-21swapper/111:52:581
31892310,4sleep10-21swapper/111:52:581
31892310,4sleep10-21swapper/111:52:581
31892310,4sleep10-21swapper/111:52:581
317442310,4chrt0-21swapper/208:48:072
317442310,4chrt0-21swapper/208:48:072
317442310,4chrt0-21swapper/208:48:072
27751993127,3cyclictest18335-21missed_timers08:13:001
27751993127,3cyclictest18335-21missed_timers08:13:001
27751993124,5cyclictest17660-21cron12:32:441
27751993124,5cyclictest17660-21cron12:32:441
27751993124,5cyclictest17660-21cron12:32:441
27751993123,6cyclictest13252-21threads12:18:061
27751993123,6cyclictest13252-21threads12:18:061
27751993123,6cyclictest13252-21threads12:18:061
27750993124,5cyclictest27349-21gltestperf08:38:000
27750993124,5cyclictest27349-21gltestperf08:38:000
190602310,2chrt0-21swapper/212:33:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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