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2025-12-18 - 08:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 rackcslot7s.osadl.org (updated Thu Dec 18, 2025 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301551923170,9sleep34497-21PK-Backend19:05:203
301515622680,13sleep234-21ksoftirqd/219:05:152
308391321240,7sleep30-21swapper/322:20:023
1973991070,9rtkit-daemon1972-21rtkit-daemon21:20:073
1973991010,9rtkit-daemon1972-21rtkit-daemon20:24:293
197399990,9rtkit-daemon1972-21rtkit-daemon20:47:413
197399970,9rtkit-daemon1972-21rtkit-daemon22:25:051
197399950,8rtkit-daemon1972-21rtkit-daemon20:35:543
197399920,9rtkit-daemon1972-21rtkit-daemon21:13:373
197399920,9rtkit-daemon1972-21rtkit-daemon21:13:373
30310242910,10sleep153-21kcompactd019:50:091
197399880,9rtkit-daemon1972-21rtkit-daemon20:42:553
197399880,6rtkit-daemon1972-21rtkit-daemon22:22:573
30884812770,9sleep342-21ksoftirqd/322:30:283
197399730,59rtkit-daemon0-21swapper/119:07:561
301626599700,65cyclictest1972-21rtkit-daemon21:30:292
30935462660,7sleep10-21swapper/122:45:281
301451026438,20sleep00-21swapper/019:05:020
30883672590,14sleep2341ksoftirqd/222:30:262
197399560,9rtkit-daemon1972-21rtkit-daemon20:36:422
197399560,8rtkit-daemon1972-21rtkit-daemon23:23:532
197399560,8rtkit-daemon1972-21rtkit-daemon20:25:402
197399540,8rtkit-daemon1972-21rtkit-daemon20:44:592
197399530,8rtkit-daemon1972-21rtkit-daemon22:20:502
197399520,8rtkit-daemon1972-21rtkit-daemon20:24:012
30280502510,7chrt0-21swapper/219:40:242
30280502510,7chrt0-21swapper/219:40:242
301626999500,46cyclictest1972-21rtkit-daemon20:58:183
301625599494,6cyclictest141rcu_preempt21:30:000
31187192480,7sleep2331rcuc/200:00:022
3016255994817,27cyclictest3101055-21cron23:10:000
31217552470,7sleep10-21swapper/100:05:321
301626099473,11cyclictest1-21systemd22:15:001
301626099472,39cyclictest3115875-21hddtemp_smartct23:50:161
3016255994629,6cyclictest13-21ksoftirqd/000:10:140
197399460,32rtkit-daemon0-21swapper/019:10:210
197399450,9rtkit-daemon931-21irqbalance21:03:072
30696092440,7sleep14497-21PK-Backend21:40:001
30696092440,7sleep14497-21PK-Backend21:40:001
3016269994421,19cyclictest3093269-21memory22:45:223
197399440,5rtkit-daemon0-21swapper/100:11:391
197399440,5rtkit-daemon0-21swapper/000:15:440
3016269994321,18cyclictest3129887-21expr00:30:143
3016255994325,6cyclictest13-21ksoftirqd/019:40:010
3016255994322,13cyclictest13-21ksoftirqd/020:30:020
30932712420,6sleep04497-21PK-Backend22:45:220
30638352420,7sleep2331rcuc/221:20:292
301626999422,23cyclictest3021208-21ps19:20:263
31161882410,8sleep00-21swapper/023:50:220
3016269994124,13cyclictest42-21ksoftirqd/321:35:303
3016269994124,13cyclictest42-21ksoftirqd/321:35:293
3016269994116,21cyclictest3090032-21processes22:35:273
3016269994114,7cyclictest141rcu_preempt20:30:003
3016269994113,8cyclictest42-21ksoftirqd/300:09:553
3016269994110,15cyclictest42-21ksoftirqd/323:20:323
3016265994131,6cyclictest3034626-21sort20:00:022
3016265994131,6cyclictest3034626-21sort20:00:012
3016265994127,9cyclictest3119758-21ps00:00:272
3016265994127,9cyclictest3119758-21ps00:00:272
301626599411,17cyclictest3030853-21cat19:50:022
3016260994122,14cyclictest26-21ksoftirqd/123:36:551
3016260994122,14cyclictest26-21ksoftirqd/123:36:551
3016255994129,8cyclictest3064403-21systemd21:25:010
3016255994120,16cyclictest13-21ksoftirqd/019:30:140
31083272400,7chrt4497-21PK-Backend23:30:020
30330222400,7sleep14497-21PK-Backend19:55:121
30330222400,7sleep14497-21PK-Backend19:55:121
3016269994024,12cyclictest923-21dbus-daemon22:59:573
301626999402,32cyclictest3126248-21df00:20:143
3016260994023,13cyclictest26-21ksoftirqd/119:35:301
3016255994021,14cyclictest13-21ksoftirqd/019:20:010
31126542390,6chrt0-21swapper/123:40:211
301626999398,17cyclictest0-21swapper/320:01:593
301626999398,17cyclictest0-21swapper/320:01:593
301626999398,14cyclictest3047059-21sh20:35:003
3016269993924,11cyclictest923-21dbus-daemon23:05:013
3016269993922,12cyclictest1033-21gdbus19:58:583
3016269993922,12cyclictest1033-21gdbus19:58:583
3016260993922,5cyclictest26-21ksoftirqd/119:45:171
3016260993921,14cyclictest26-21ksoftirqd/122:44:061
301626099391,10cyclictest141rcu_preempt00:25:011
301625599392,7cyclictest3021157-21ntp_states19:20:250
3016255993923,11cyclictest438-20systemd-journal21:30:300
30325862381,6sleep23032775-20journal-offline19:55:022
3016269993823,11cyclictest3019804-21sshd19:15:573
3016265993823,11cyclictest3104528-21apt-get23:20:022
3016265993820,13cyclictest34-21ksoftirqd/221:45:022
3016265993818,15cyclictest3022428-21cstates19:25:142
3016260993822,11cyclictest438-20systemd-journal20:40:561
301625599382,32cyclictest3060189-21ntp_states21:10:250
301625599382,32cyclictest3060189-21ntp_states21:10:250
31289632370,6sleep04497-21PK-Backend00:25:310
31289632370,6sleep04497-21PK-Backend00:25:300
301626999372,31cyclictest3129025-40lsb_release00:25:593
301626999372,31cyclictest3129025-40lsb_release00:25:593
3016269993723,10cyclictest42-21ksoftirqd/320:20:023
301626999372,21cyclictest3036638-21grep20:05:133
3016269993720,13cyclictest3026163-21cat19:35:213
3016269993719,13cyclictest3029049-21cat19:45:103
3016269993711,12cyclictest141rcu_preempt23:50:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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