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2026-04-26 - 04:51

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 Sun Apr 26, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3188633995448,4cyclictest3239109-21kworker/u8:0+events_unbound22:02:391
3188641995245,4cyclictest3259953-21munin-plugin-st22:35:003
3188628995128,20cyclictest3233953-21idleruntime-cro21:20:010
3188628995128,20cyclictest3233953-21idleruntime-cro21:20:000
318862899501,31cyclictest3220815-21/usr/sbin/munin20:40:160
3188637994935,10cyclictest311ktimers/223:20:132
3188633994833,10cyclictest231ktimers/119:45:121
3188628994639,4cyclictest3265484-21idleruntime-cro22:50:010
3188628994639,4cyclictest3265484-21idleruntime-cro22:50:010
318862899461,40cyclictest3224214-21/usr/sbin/munin20:50:180
318862899451,39cyclictest3215407-21apt-get20:25:120
3188641994433,8cyclictest391ktimers/320:35:113
3188633994438,4cyclictest3251177-21kworker/u8:2+events_unbound22:17:441
3188633994438,4cyclictest3192548-21kworker/u8:2+events_unbound19:27:141
318862899441,38cyclictest3222229-21apt-get20:45:120
318862899441,37cyclictest3298757-21apt-get00:25:100
3188628994332,8cyclictest3275456-21grep23:15:260
318862899433,27cyclictest3214041-21irqstats20:20:180
318862899431,39cyclictest3253652-21/usr/sbin/munin22:15:160
318862899431,39cyclictest3248828-21/usr/sbin/munin22:00:250
318862899431,38cyclictest31928002chrt19:20:040
318862899430,41cyclictest0-21swapper/020:39:530
3188641994229,10cyclictest391ktimers/320:15:123
3188641994229,10cyclictest391ktimers/320:15:123
318862899421,6cyclictest0-21swapper/022:35:010
3188628994214,25cyclictest3300876-21sed00:30:180
3188628994214,25cyclictest3300876-21sed00:30:180
3188628994214,24cyclictest0-21swapper/022:45:000
318862899421,38cyclictest3282058-21/usr/sbin/munin23:35:200
318862899421,38cyclictest3282058-21/usr/sbin/munin23:35:200
318862899421,37cyclictest3249946-21munin-node22:05:120
318862899421,36cyclictest3229156-21df21:05:140
318862899421,36cyclictest3229156-21df21:05:140
318862899421,35cyclictest3203248-21apt-get19:50:120
3188637994129,9cyclictest3291705-21audit_send_reply00:05:012
3188628994131,7cyclictest3211745-21sh20:15:010
318862899411,3cyclictest3283200-21apt-get23:40:120
318862899411,37cyclictest3251953-21/usr/sbin/munin22:10:170
318862899411,37cyclictest3234392-21apt-get21:20:110
318862899411,36cyclictest3196518-21/usr/sbin/munin19:30:180
318862899411,35cyclictest3271071-21/usr/sbin/munin23:05:180
318862899411,35cyclictest3260757-21/usr/sbin/munin22:35:180
318862899411,35cyclictest3237894-21/usr/sbin/munin21:30:160
318862899411,34cyclictest3272624-21/usr/sbin/munin23:10:140
318862899411,34cyclictest3227356-21/usr/sbin/munin21:00:140
318862899411,34cyclictest3208582-21/usr/sbin/munin20:05:180
318862899411,33cyclictest3236096-21apt-get21:25:120
3188637994033,4cyclictest3227123-21idleruntime-cro21:00:002
318862899403,33cyclictest3297620-21ntp_states00:20:220
318862899402,35cyclictest3202066-21/usr/sbin/munin19:45:200
318862899402,31cyclictest3293636-21apt-get00:10:140
3188628994016,21cyclictest0-21swapper/000:40:000
318862899401,5cyclictest3267415-21apt-get22:55:130
318862899401,4cyclictest0-21swapper/021:10:130
318862899401,4cyclictest0-21swapper/021:10:120
318862899401,36cyclictest3296007-21/usr/sbin/munin00:15:240
318862899401,36cyclictest3285179-21/usr/sbin/munin23:45:170
318862899401,35cyclictest3226537-21/usr/sbin/munin20:55:250
318862899401,34cyclictest3292045-21df00:05:140
318862899401,34cyclictest3241491-21/usr/sbin/munin21:40:160
318862899401,34cyclictest3217446-21irqstats20:30:180
318862899401,33cyclictest3288512-21apt-get23:55:120
318862899400,4cyclictest0-21swapper/020:00:150
3188633993928,7cyclictest3303631-21sh00:39:591
318862899392,32cyclictest3194514-21apt-get19:25:120
318862899392,31cyclictest3242917-21apt-get21:45:130
318862899392,23cyclictest3288286-21munin-run23:55:010
318862899391,35cyclictest3290607-21/usr/sbin/munin00:00:180
318862899391,35cyclictest3240573-21users21:35:260
318862899391,35cyclictest3191202-21df_inode19:15:160
318862899391,24cyclictest3246864-21irqstats21:55:170
318862899391,24cyclictest3246864-21irqstats21:55:160
318862899390,2cyclictest0-21swapper/023:20:150
3188641993828,6cyclictest0-21swapper/300:40:003
3188633993817,12cyclictest131rcu_preempt21:10:211
3188633993817,12cyclictest131rcu_preempt21:10:201
318862899382,33cyclictest3269471-21/usr/sbin/munin23:00:190
318862899381,34cyclictest3279583-21date23:30:000
318862899381,34cyclictest3279583-21date23:30:000
318862899381,34cyclictest3257108-21irqstats22:25:190
318862899381,33cyclictest3199836-21apt-get19:40:070
318862899381,33cyclictest3199525-21date19:40:020
318862899381,32cyclictest3244615-21/usr/sbin/munin21:50:120
318862899372,32cyclictest3265763-21/usr/sbin/munin22:50:130
318862899371,30cyclictest3279780-21apt-get23:30:140
318862899371,30cyclictest3279780-21apt-get23:30:140
318862899371,30cyclictest3255072-21apt-get22:20:140
3188628993712,22cyclictest645-21runrttasks19:11:130
318862899370,2cyclictest0-21swapper/019:55:120
3188641993626,6cyclictest3271902-21unixbench_singl23:05:263
3188641993618,5cyclictest131rcu_preempt23:35:553
3188641993618,5cyclictest131rcu_preempt23:35:543
3188633993613,11cyclictest131rcu_preempt19:59:501
318862899361,2cyclictest3211983-21apt-get20:15:120
318862899361,2cyclictest3211983-21apt-get20:15:120
318864199358,6cyclictest40-21ksoftirqd/321:20:163
3188641993527,5cyclictest3218573-21cron20:35:013
3188641993527,4cyclictest0-21swapper/322:20:003
3188641993527,4cyclictest0-21swapper/321:02:283
3188637993524,8cyclictest311ktimers/219:10:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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