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2025-12-22 - 14:21

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 Mon Dec 22, 2025 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2906563995129,18cyclictest3001350-21grep23:40:270
2906568995026,20cyclictest0-21swapper/123:00:171
2906568994929,17cyclictest3001353-21unixbench_singl23:40:261
2906563994920,26cyclictest0-21swapper/000:15:270
2906568994739,5cyclictest2989824-21ls23:10:001
2906563994721,22cyclictest0-21swapper/000:35:000
2906563994721,22cyclictest0-21swapper/000:35:000
2906576994537,5cyclictest3008121-21unixbench_multi00:00:273
2906576994536,5cyclictest2955285-21sh21:30:003
2906576994536,5cyclictest2955285-21sh21:30:003
2906576994532,10cyclictest391ktimers/323:45:153
2906563994518,24cyclictest2960632-21idleruntime-cro21:45:000
290656399451,11cyclictest2964255-21apt-get21:55:110
2906571994336,4cyclictest2991512-21cron23:15:002
2906568994335,4cyclictest0-21swapper/123:49:591
2906568994325,14cyclictest0-21swapper/122:05:001
290656399431,9cyclictest2988642-21/usr/sbin/munin23:05:160
290656399431,37cyclictest2921134-21/usr/sbin/munin19:50:160
290656399431,36cyclictest2930063-21/usr/sbin/munin20:15:210
2906568994232,6cyclictest2996653-21munin-plugin-st23:30:001
2906568994220,18cyclictest2958501-21grep21:35:291
2906568994210,8cyclictest2928899-21sed20:10:291
2906563994235,4cyclictest3005161-21cron23:55:000
290656399422,27cyclictest2946367-21users21:00:270
290656399421,3cyclictest2998586-21apt-get23:35:150
290656399421,39cyclictest0-21swapper/021:05:180
290656399421,36cyclictest2995359-21tune2fs23:25:150
290656399421,36cyclictest2971293-21apt-get22:15:150
290656399421,36cyclictest2950607-21fschecks_time21:15:170
290656899412,8cyclictest2932053-21proc_pri20:20:221
290656399412,34cyclictest2935077-21/usr/sbin/munin20:30:150
290656399411,9cyclictest3019706-21/usr/sbin/munin00:35:180
290656399411,9cyclictest3019706-21/usr/sbin/munin00:35:180
290656399411,4cyclictest29137662sleep019:28:090
290656399411,3cyclictest2969820-21perl22:10:170
290656399411,37cyclictest2975434-21/usr/sbin/munin22:25:240
290656399411,37cyclictest2924960-21/usr/sbin/munin20:00:180
290656399411,35cyclictest2996882-21apt-get23:30:120
290656399411,35cyclictest2996882-21apt-get23:30:110
290656399411,35cyclictest2922889-21/usr/sbin/munin19:55:170
290656399411,35cyclictest2916194-21/usr/sbin/munin19:35:180
290656899402,9cyclictest2922445-21auditctl19:55:001
2906568994013,23cyclictest0-21swapper/123:30:171
2906568994013,23cyclictest0-21swapper/123:30:171
2906568994011,7cyclictest204-21dbus-daemon23:13:161
290656899401,10cyclictest3005160-21cron23:55:011
290656399402,33cyclictest2976858-21meminfo22:30:190
290656399401,8cyclictest2909577-21/usr/sbin/munin19:15:220
2906563994018,19cyclictest0-21swapper/020:40:010
290656399401,7cyclictest2931982-21/usr/sbin/munin20:20:210
290656399401,4cyclictest0-21swapper/020:50:120
290656399401,36cyclictest2973693-21/usr/sbin/munin22:20:240
290656399401,36cyclictest2949020-21/usr/sbin/munin21:10:190
290656399401,34cyclictest3010977-21/usr/sbin/munin00:10:180
290656399401,34cyclictest2991762-21/usr/sbin/munin23:15:130
290656399401,34cyclictest2990396-21/usr/sbin/munin23:10:200
290656399401,34cyclictest2955518-21/usr/sbin/munin21:30:120
290656399400,35cyclictest0-21swapper/023:55:110
290656399400,2cyclictest0-21swapper/021:50:140
2906576993929,6cyclictest2910536-21sendmail19:20:013
2906571993928,8cyclictest2906555-21cyclictest22:50:002
290656899392,11cyclictest2974467-21cron22:25:011
290656899391,9cyclictest2924140-21cron20:00:001
2906568993911,3cyclictest2950302-21latency_hist21:15:001
290656899391,11cyclictest2993219-21cron23:20:001
290656899391,10cyclictest3009815-21unixbench_multi00:05:261
290656399392,23cyclictest3008678-21latency_hist00:05:010
290656399392,20cyclictest0-21swapper/019:15:010
290656399391,4cyclictest2978996-21ls22:35:250
290656399391,35cyclictest2979937-21df22:40:140
290656399391,35cyclictest2966159-21/usr/sbin/munin22:00:170
290656399391,35cyclictest2944322-21/usr/sbin/munin20:55:250
290656399391,35cyclictest2918795-21sshd19:42:090
290656399391,33cyclictest3015923-21/usr/sbin/munin00:25:160
290656399391,33cyclictest2985054-21/usr/sbin/munin22:55:170
290656399391,33cyclictest2983803-21ntp_states22:50:210
290656399391,33cyclictest2968937-21unixbench_singl22:05:260
290656399391,33cyclictest2954127-21/usr/sbin/munin21:25:200
290656399391,33cyclictest2954127-21/usr/sbin/munin21:25:200
290656399391,11cyclictest2933254-21diskstats20:25:150
2906576993827,7cyclictest0-21swapper/321:40:273
2906571993824,4cyclictest131rcu_preempt23:53:082
290656899382,7cyclictest2982566-21grep22:45:251
290656899381,8cyclictest2993475-21/usr/sbin/munin23:20:201
2906568993813,22cyclictest0-21swapper/120:50:171
290656899381,10cyclictest2985463-21tr22:55:211
290656399385,28cyclictest2961150-21if_eth021:45:170
290656399381,6cyclictest2958638-21cron21:37:000
290656399381,34cyclictest2987938-21cron23:02:590
290656399381,34cyclictest2952361-21/usr/sbin/munin21:20:150
290656399381,34cyclictest2952361-21/usr/sbin/munin21:20:150
290656399381,33cyclictest3002006-21/usr/sbin/munin23:45:140
290656399381,32cyclictest2919368-21/usr/sbin/munin19:45:150
290656399381,31cyclictest2926149-21/usr/sbin/munin20:05:120
290656399381,2cyclictest3008830-21apt-get00:05:130
290656399381,2cyclictest0-21swapper/020:40:140
290656399381,10cyclictest3014254-21cstates00:20:140
2906576993729,6cyclictest2923946-21kworker/u8:3+events_unbound20:02:433
2906576993726,8cyclictest3004713-21grep23:50:263
2906571993730,4cyclictest2965718-21cron22:00:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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