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2025-11-16 - 00:03

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 Sat Nov 15, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2638543995445,4cyclictest2659768-21munin-plugin-st08:10:012
2638540994840,4cyclictest2661565-21latency_hist08:15:011
2638540994824,6cyclictest131rcu_preempt10:15:121
2638535994841,5cyclictest2711650-21kworker/u8:2+events_unbound10:56:080
2638535994841,4cyclictest2732465-21cut11:40:000
2638548994738,5cyclictest2711998-21munin-plugin-st10:40:013
2638543994638,4cyclictest2753163-21sendmail12:40:002
263854399462,38cyclictest2668729-21apt-get08:35:132
2638540994636,7cyclictest2702793-21grep10:10:331
2638540994634,8cyclictest2677052-21sendmail-msp09:00:011
263854399452,38cyclictest2677483-21/usr/sbin/munin09:00:132
263854399442,36cyclictest2694538-21apt-get09:50:132
2638543994419,21cyclictest2690475-21grep09:35:272
2638543994415,25cyclictest2731224-21perl11:35:192
263854399441,38cyclictest2724347-21/usr/sbin/munin11:15:172
263854399432,36cyclictest2684769-21/usr/sbin/munin09:20:222
2638543994319,20cyclictest2645506-21grep07:25:272
263854399431,39cyclictest2714550-21/usr/sbin/munin10:45:252
263854399431,37cyclictest2750278-21/usr/sbin/munin12:30:202
263854399431,37cyclictest2741442-21apt-get12:05:132
263854399431,36cyclictest2654656-21apt-get07:55:142
2638540994332,7cyclictest2647198-21grep07:30:271
2638535994331,7cyclictest0-21swapper/008:00:010
263854399428,29cyclictest2734799-21sed11:45:192
263854399421,38cyclictest2747132-21/usr/sbin/munin12:20:222
263854399421,38cyclictest2729029-21sshd11:29:482
263854399421,38cyclictest2705684-21/usr/sbin/munin10:20:192
263854399421,38cyclictest2641466-21/usr/sbin/munin07:15:212
263854399421,36cyclictest2698175-21apt-get10:00:152
263854399421,36cyclictest2683149-21/usr/sbin/munin09:15:252
263854399421,36cyclictest2665572-21/usr/sbin/munin08:25:172
263854399421,34cyclictest2699874-21apt-get10:05:152
2638548994133,5cyclictest299-21systemd-logind11:01:063
263854399412,36cyclictest2736656-21/usr/sbin/munin11:50:242
2638543994114,24cyclictest2675840-21if_eth008:55:192
263854399411,37cyclictest2681463-21ntp_states09:10:252
263854399411,35cyclictest2715643-21apt-get10:50:152
263854399411,35cyclictest2674407-21/usr/sbin/munin08:50:222
263854399411,34cyclictest2719066-21apt-get11:00:162
2638540994111,6cyclictest131rcu_preempt12:20:131
2638535994128,9cyclictest121ktimers/007:35:130
263854399403,34cyclictest2708497-21cron10:29:002
263854399401,36cyclictest2749460-21seq12:26:442
263854399401,36cyclictest2738663-21/usr/sbin/munin11:55:302
263854399401,36cyclictest2738663-21/usr/sbin/munin11:55:292
263854399401,36cyclictest2726335-21/usr/sbin/munin11:20:192
263854399401,36cyclictest2704170-21/usr/sbin/munin10:15:242
263854399401,36cyclictest2697523-21/usr/sbin/munin09:55:272
263854399401,36cyclictest2644108-21cron07:24:012
263854399401,35cyclictest2692966-21/usr/sbin/munin09:45:162
263854399401,35cyclictest2679289-21df09:05:162
263854399401,34cyclictest2729291-21munin-node11:30:162
263854399401,34cyclictest2729291-21munin-node11:30:162
263854399400,34cyclictest0-21swapper/208:30:142
263854399400,34cyclictest0-21swapper/208:30:142
2638540994034,4cyclictest2682585-21kworker/u8:1+events_unbound09:46:001
2638540994019,9cyclictest131rcu_preempt09:50:121
263854399398,28cyclictest2722840-21wc11:10:192
263854399397,27cyclictest2703468-21date10:15:012
263854399393,33cyclictest2664076-21memory08:20:222
263854399391,35cyclictest2717398-21/usr/sbin/munin10:55:152
263854399391,35cyclictest2662211-21/usr/sbin/munin08:15:182
263854399391,35cyclictest2649999-21/usr/sbin/munin07:40:212
263854399391,32cyclictest2638706-21apt-get07:10:122
2638540993930,6cyclictest2721822-21grep11:05:271
2638540993911,5cyclictest131rcu_preempt08:00:121
2638535993928,7cyclictest2735881-21apt11:50:010
2638535993922,10cyclictest131rcu_preempt11:19:490
2638548993831,4cyclictest2684075-21grep09:20:013
263854399383,32cyclictest2686466-21memory09:25:202
263854399382,33cyclictest2733692-21/usr/sbin/munin11:40:272
263854399382,33cyclictest2691230-21/usr/sbin/munin09:40:162
263854399381,34cyclictest2743243-21/usr/sbin/munin12:10:172
263854399381,34cyclictest2712542-21if_eth010:40:192
263854399381,34cyclictest2709843-21unixbench_singl10:30:272
263854399381,34cyclictest2688165-21/usr/sbin/munin09:30:212
263854399381,34cyclictest2659990-21/usr/sbin/munin08:10:122
263854399381,34cyclictest2648320-21/usr/sbin/munin07:35:212
263854399381,34cyclictest2646134-21/usr/sbin/munin07:30:132
263854399381,30cyclictest2710523-21apt-get10:35:142
2638540993831,5cyclictest2654320-21kworker/u8:1+events_unbound07:55:301
2638535993832,4cyclictest2687181-21kworker/u8:2+events_unbound09:30:570
2638535993830,4cyclictest2751445-21idleruntime-cro12:35:000
2638535993822,4cyclictest131rcu_preempt10:01:070
2638535993817,5cyclictest2697768-21kworker/u8:2-events_unbound09:59:080
2638548993728,4cyclictest0-21swapper/309:30:013
263854399371,34cyclictest2721336-21ntp_states11:05:232
263854399371,33cyclictest53-21kcompactd012:01:182
263854399371,33cyclictest2672262-21df_inode08:45:172
263854399371,33cyclictest2652952-21/usr/sbin/munin07:50:132
263854399371,30cyclictest2651254-21apt-get07:45:142
2638540993715,17cyclictest231ktimers/111:10:131
2638535993731,4cyclictest2665024-21kworker/u8:1+events_unbound08:30:410
2638535993731,4cyclictest2665024-21kworker/u8:1+events_unbound08:30:400
2638535993731,3cyclictest2704982-21sendmail10:20:010
2638535993728,6cyclictest2702804-21unixbench_multi10:10:330
2638535993722,4cyclictest131rcu_preempt10:48:590
2638535993719,10cyclictest131rcu_preempt09:44:070
2638535993718,5cyclictest131rcu_preempt09:15:590
2638535993715,5cyclictest131rcu_preempt11:35:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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