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2026-05-13 - 08:18

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 Wed May 13, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2321253995949,5cyclictest2325200-21cut19:20:000
2321264995541,9cyclictest2392975-21apt-key22:35:003
2321257995522,29cyclictest2388947-21unixbench_singl22:20:261
2321257995320,5cyclictest2366106-21grep21:15:271
2321264995239,9cyclictest391ktimers/322:50:133
2321253995244,5cyclictest0-21swapper/023:55:110
2321260995143,5cyclictest2415339-21cron23:40:002
2321257994925,4cyclictest0-21swapper/122:10:261
2321253994927,17cyclictest0-21swapper/020:40:280
2321253994927,17cyclictest0-21swapper/020:40:280
2321253994810,4cyclictest2322981-21munin-node19:15:000
2321257994719,7cyclictest2392291-21grep22:30:231
2321264994633,10cyclictest391ktimers/320:15:133
2321253994632,11cyclictest121ktimers/023:25:120
2321264994534,8cyclictest391ktimers/320:55:123
2321264994532,9cyclictest2415359-21sendmail23:40:013
2321257994521,4cyclictest0-21swapper/123:50:161
2321253994535,7cyclictest2428541-21grep00:15:250
2321253994535,7cyclictest2428541-21grep00:15:250
2321264994435,6cyclictest2376816-21grep21:45:253
2321253994415,5cyclictest0-21swapper/019:40:010
2321257994335,5cyclictest204-21dbus-daemon00:18:041
2321257994335,5cyclictest204-21dbus-daemon00:18:031
2321253994335,4cyclictest2339067-21sendmail20:00:010
2321253994214,6cyclictest2347887-21sed20:25:020
2321253994115,6cyclictest2341297-21if_eth020:05:160
2321264993931,6cyclictest2420149-21kworker/u8:1+events_unbound00:03:033
2321264993931,6cyclictest2349150-21kworker/u8:0+events_unbound20:47:223
2321264993926,10cyclictest391ktimers/300:10:153
2321260993930,4cyclictest0-21swapper/220:20:002
2321260993928,7cyclictest0-21swapper/200:35:002
2321260993927,7cyclictest2335169-21grep19:45:252
2321257993931,4cyclictest0-21swapper/121:35:001
2321253993927,8cyclictest2431966-21grep00:25:270
2321264993829,6cyclictest2327540-21cut19:25:173
2321264993827,8cyclictest2394686-21grep22:40:003
2321257993827,7cyclictest2426857-21grep00:10:271
2321253993828,6cyclictest0-21swapper/023:20:000
2321253993828,6cyclictest0-21swapper/023:20:000
2321264993729,5cyclictest2339049-21munin-run20:00:013
232126499372,12cyclictest40-21ksoftirqd/321:30:143
2321260993729,5cyclictest311ktimers/220:44:312
2321260993729,5cyclictest311ktimers/220:44:302
2321253993727,6cyclictest0-21swapper/023:35:260
2321253993628,3cyclictest0-21swapper/020:50:250
2321264993527,4cyclictest2411743-21ls23:29:593
2321264993527,4cyclictest0-21swapper/323:22:533
2321264993526,4cyclictest0-21swapper/322:12:393
2321260993527,4cyclictest0-21swapper/219:10:162
2321260993524,6cyclictest2402759-21grep23:00:282
2321257993523,7cyclictest0-21swapper/121:40:001
2321253993528,4cyclictest2345870-21munin-plugin-st20:20:010
2321253993525,6cyclictest0-21swapper/000:30:260
2321253993523,7cyclictest2373800-21apt21:40:010
2321260993426,4cyclictest0-21swapper/222:20:152
2321257993426,5cyclictest2339047-21cron20:00:001
2321257993425,6cyclictest0-21swapper/121:25:011
2321253993425,6cyclictest0-21swapper/023:24:590
232125399340,30cyclictest0-21swapper/020:25:130
2321264993326,5cyclictest2386290-21kworker/u8:0+events_unbound23:17:523
2321264993326,5cyclictest2386290-21kworker/u8:0+events_unbound23:17:523
2321264993325,6cyclictest2323027-21latency_hist19:15:013
232126099335,7cyclictest32-21ksoftirqd/219:40:182
2321257993326,4cyclictest2332230-21munin-plugin-st19:40:001
2321257993325,4cyclictest0-21swapper/120:45:241
2321257993324,5cyclictest2401491-21cron23:00:001
2321257993322,6cyclictest0-21swapper/122:15:251
2321257993320,8cyclictest0-21swapper/119:50:261
2321253993322,7cyclictest2383781-21grep22:05:240
2321264993224,2cyclictest2357961-21kworker/u8:3+events_unbound22:42:463
2321260993223,6cyclictest2350788-21grep20:30:252
2321260993223,5cyclictest2406605-21cron23:14:592
2321260993222,4cyclictest0-21swapper/219:55:002
2321260993210,4cyclictest301rcuc/223:40:142
2321257993224,4cyclictest0-21swapper/121:05:231
2321257993222,5cyclictest0-21swapper/119:15:271
2321257993220,8cyclictest2399320-21grep22:50:251
2321253993220,7cyclictest2387218-21grep22:15:250
2321264993116,6cyclictest2345620-21kworker/u8:3+events_unbound20:28:413
232126499311,4cyclictest131rcu_preempt22:45:123
2321260993124,4cyclictest0-21swapper/220:10:262
2321260993122,5cyclictest0-21swapper/200:15:262
2321260993122,5cyclictest0-21swapper/200:15:262
2321257993124,4cyclictest2396397-21auditctl22:45:011
2321257993122,5cyclictest0-21swapper/122:25:151
2321253993124,3cyclictest0-21swapper/022:50:010
2321253993120,6cyclictest2363140-21cron21:10:010
2321264993023,5cyclictest2420149-21kworker/u8:1+events_unbound00:38:073
2321264993021,6cyclictest391ktimers/322:15:123
2321264993019,4cyclictest2428703-21kworker/u8:2+events_unbound00:17:223
2321264993019,4cyclictest2428703-21kworker/u8:2+events_unbound00:17:223
2321264993018,8cyclictest204-21dbus-daemon21:17:283
2321264993018,6cyclictest2370034-21kworker/u8:2+events_unbound21:29:283
232126099307,5cyclictest32-21ksoftirqd/222:40:252
232126099307,14cyclictest32-21ksoftirqd/219:25:012
2321260993024,3cyclictest0-21swapper/219:30:252
2321260993023,4cyclictest0-21swapper/221:00:162
2321260993023,4cyclictest0-21swapper/220:50:262
2321260993023,4cyclictest0-21swapper/220:00:002
2321260993022,4cyclictest0-21swapper/222:45:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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