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2026-06-30 - 12:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Tue Jun 30, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33648082620,2sleep3481ktimers/323:50:223
33299422620,5chrt0-21swapper/223:15:212
3080559995951,6cyclictest1704890-21systemd-journal23:40:010
33553962520,2sleep20-21swapper/223:40:262
3080559995042,6cyclictest3221927-21kworker/u8:0+flush-8:021:30:310
3080561994840,6cyclictest3186818-21apt-get20:55:011
3080559994842,4cyclictest3059901-21kworker/u8:3+flush-8:020:35:280
3080559994742,4cyclictest3246710-21kworker/u8:1+events_unbound22:35:180
3080565994534,8cyclictest3245780-21ntpq21:50:272
3080561994537,5cyclictest3116099-21ntpq19:40:251
3080559994535,8cyclictest1704890-21systemd-journal21:50:000
3080559994515,18cyclictest3084500-21ntpq19:10:240
31392472440,2sleep10-21swapper/120:05:221
3080559994413,20cyclictest3280700-21ntpq22:25:240
3080561994332,8cyclictest3151014-21ntpq20:15:261
3080559994337,4cyclictest3365211-21ntpq23:50:250
3080559994316,16cyclictest589-21runrttasks23:05:120
3080559994213,18cyclictest3370202-21ntpq23:55:260
3080559994210,10cyclictest589-21runrttasks00:12:150
3080561994127,11cyclictest1704890-21systemd-journal19:59:411
3080559994114,15cyclictest3386740-21/usr/sbin/munin00:15:180
3080559994114,14cyclictest3096392-21ntpq19:20:300
3080559994111,16cyclictest3335565-21ntp_states23:20:290
3080559994111,15cyclictest589-21runrttasks19:15:300
3080561994033,5cyclictest3191982-21apt-get20:59:591
3080561994030,8cyclictest1704890-21systemd-journal22:29:591
3080559994035,3cyclictest1-21systemd20:00:010
3080559994021,9cyclictest3407057-21/usr/sbin/munin00:35:190
3080559994016,9cyclictest3221166-21grep21:25:290
3080559994014,14cyclictest3212375-21aten2_r5power_e21:20:140
3080559994014,14cyclictest3185932-21ntpq20:50:250
3080559994012,17cyclictest3126009-21ntpq19:50:250
3080559994011,21cyclictest3356487-21/usr/sbin/munin23:45:140
3080559994011,17cyclictest3375205-21ntpq00:00:240
308055999399,20cyclictest3147287-21tr20:15:120
3080559993931,6cyclictest3242018-21apt-get21:50:120
3080559993920,10cyclictest3206418-21python321:10:310
3080559993917,4cyclictest3111123-21ntpq19:35:250
3080559993915,9cyclictest589-21runrttasks20:45:140
3080559993914,15cyclictest3340506-21ntp_states23:25:270
3080559993914,14cyclictest3275860-21/usr/sbin/munin22:20:280
3080559993912,18cyclictest3251449-21sshd21:57:350
3080559993911,19cyclictest3141587-21sshd20:07:220
3080559993911,16cyclictest3391594-21grep00:20:110
3080559993910,16cyclictest3342404-21cut23:30:190
3080561993825,10cyclictest1704890-21systemd-journal20:35:401
308055999389,16cyclictest3188574-21cut20:55:230
3080559993817,4cyclictest3266965-21apt-get22:15:120
3080559993817,4cyclictest3266965-21apt-get22:15:120
3080559993817,10cyclictest3136158-21python320:00:300
3080559993815,10cyclictest3376361-21apt-get00:05:120
3080559993813,15cyclictest3406099-21munin-run00:35:010
3080559993813,13cyclictest3232117-21/usr/sbin/munin21:40:130
3080559993812,14cyclictest3255666-21ntpq22:00:260
3080559993812,11cyclictest3142042-21find20:10:120
3080559993811,17cyclictest3261337-21sshd22:07:360
3080559993811,17cyclictest3261337-21sshd22:07:350
3080559993811,16cyclictest3228105-21kthreadcore21:35:200
3080559993810,19cyclictest3315356-21/usr/sbin/munin23:00:240
3080559993810,19cyclictest3265511-21/usr/sbin/munin22:10:240
3080559993810,15cyclictest3296731-21apt22:45:130
3080561993733,2cyclictest3401139-21idleruntime-cro00:30:001
3080561993729,6cyclictest3410985-21latency_hist00:40:001
3080559993716,10cyclictest3305492-21ntpq22:50:240
3080559993715,13cyclictest3152290-21cut20:20:110
3080559993713,14cyclictest3330493-21/usr/sbin/munin23:15:260
3080559993713,13cyclictest589-21runrttasks20:27:080
3080559993713,13cyclictest3107136-21munin-run19:35:000
3080559993712,15cyclictest3325579-21ntpq23:10:260
3080559993712,12cyclictest3101352-21ntpq19:25:300
3080559993712,11cyclictest3112722-21hddtemp_smartct19:40:180
3080559993711,14cyclictest3175775-21/usr/sbin/munin20:40:220
3080559993710,16cyclictest3396795-21perl00:25:190
3080559993710,15cyclictest3196313-21ntp_states21:00:280
3080559993710,12cyclictest3292065-21fschecks_count22:40:170
3080559993710,12cyclictest3166185-21timerandwakeup20:30:320
3080561993629,5cyclictest1704890-21systemd-journal22:55:011
3080561993624,9cyclictest1704890-21systemd-journal21:20:411
3080559993614,10cyclictest3211157-21ntpq21:15:270
3080559993613,11cyclictest3281861-21find22:30:130
3080559993611,13cyclictest3351519-21runrttasks23:40:030
3080565993529,4cyclictest1704890-21systemd-journal22:07:362
3080565993529,4cyclictest1704890-21systemd-journal22:07:352
3080565993527,5cyclictest1704890-21systemd-journal20:24:592
3080565993526,7cyclictest1704890-21systemd-journal23:55:002
3080561993526,6cyclictest1704890-21systemd-journal19:45:391
3080561993524,1cyclictest161rcu_preempt00:00:241
3080559993514,9cyclictest3201213-21ntpq21:05:260
3080559993513,12cyclictest3117312-21aten2_r5power_c19:45:130
3080559993513,10cyclictest3310516-21ntpq22:55:300
3080565993429,3cyclictest3146910-21latency_hist20:15:012
30795792343,3sleep10-21swapper/119:05:281
3080561993329,3cyclictest3147222-21kworker/u8:2+flush-8:021:45:111
308055999338,10cyclictest3080636-21sed19:10:020
3080561993228,2cyclictest3085422-21turbostat.cron19:15:001
3080561993224,6cyclictest3192578-21aten2_r5power_p21:00:151
3080561993224,6cyclictest1704890-21systemd-journal00:32:411
3080561993220,6cyclictest161rcu_preempt22:30:231
3080561993219,8cyclictest3385995-21latency_hist00:15:011
3080561993127,2cyclictest3261533-21turbostat.cron22:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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