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2026-06-28 - 10:50

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 Jun 28, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3229923995226,21cyclictest0-21swapper/323:15:253
3229923995226,21cyclictest0-21swapper/323:15:253
3229915995242,6cyclictest3261579-21munin-plugin-st20:40:001
3229923995042,5cyclictest3312984-21munin-plugin-st23:10:013
3229923994940,5cyclictest3234313-21fschecks_time19:20:173
3229912994941,6cyclictest3311281-21munin-plugin-st23:05:010
3229912994938,7cyclictest3261580-21cut20:40:010
3229923994635,7cyclictest3240901-21sendmail19:40:003
3229912994635,5cyclictest3256936-21kworker/u8:3+events_unbound21:02:420
3229923994435,6cyclictest391ktimers/319:55:123
3229923994412,29cyclictest3288600-21unixbench_multi21:55:263
3229918994433,6cyclictest0-21swapper/223:38:232
3229912994438,4cyclictest3319636-21kworker/u8:2+events_unbound23:38:230
3229923994335,5cyclictest3280354-21munin-plugin-st21:35:013
3229923994335,5cyclictest3280354-21munin-plugin-st21:35:013
3229923994329,11cyclictest391ktimers/319:45:133
3229923994318,21cyclictest0-21swapper/321:45:243
322992399431,3cyclictest0-21swapper/321:50:133
322992399431,13cyclictest3305779-21taskset22:45:373
322992399431,11cyclictest3290413-21/usr/sbin/munin22:00:263
322992399431,11cyclictest3290413-21/usr/sbin/munin22:00:263
3229915994336,4cyclictest3229903-21cyclictest22:35:011
3229915994335,5cyclictest3275246-21sendmail21:20:011
322992399423,34cyclictest0-21swapper/322:15:033
322992399421,9cyclictest3319263-21/usr/sbin/munin23:25:243
322992399421,12cyclictest3326681-21taskset23:48:163
3229923994121,17cyclictest0-21swapper/321:25:293
322992399411,9cyclictest3245291-21/usr/sbin/munin19:50:203
322992399411,8cyclictest3265098-21wc20:50:013
322992399411,3cyclictest0-21swapper/322:25:123
322992399411,2cyclictest3275477-21apt-get21:20:143
3229912994135,4cyclictest3328233-21kworker/u8:3+events_unbound00:23:320
3229912994132,6cyclictest0-21swapper/019:15:000
322992399403,34cyclictest3233459-21users19:15:263
322992399403,31cyclictest3313207-21apt-get23:10:133
3229923994032,4cyclictest0-21swapper/321:00:003
3229923994028,7cyclictest0-21swapper/323:50:263
322992399401,7cyclictest3334627-21/usr/sbin/munin00:10:213
322992399401,7cyclictest3269403-21/usr/sbin/munin21:00:243
322992399401,3cyclictest3342252-21sshd00:33:243
322992399401,3cyclictest0-21swapper/321:40:133
322992399400,3cyclictest0-21swapper/323:20:123
322992399400,3cyclictest0-21swapper/323:20:113
322992399400,3cyclictest0-21swapper/321:15:133
322992399400,3cyclictest0-21swapper/320:40:133
3229915994030,6cyclictest3332622-21fschecks_time00:05:171
3229915994026,10cyclictest231ktimers/122:45:121
3229912994026,6cyclictest3338902-21kworker/u8:2+events_unbound00:25:410
322992399393,4cyclictest3302984-21apt-get22:40:133
322992399392,32cyclictest3256937-21/usr/sbin/munin20:25:163
322992399391,9cyclictest3236574-21/usr/sbin/munin19:25:253
322992399391,7cyclictest3255053-21/usr/sbin/munin20:20:143
322992399391,6cyclictest3308218-21/usr/sbin/munin22:55:163
322992399391,4cyclictest3322072-21/usr/sbin/munin23:35:163
322992399391,3cyclictest0-21swapper/321:05:153
322992399391,32cyclictest3291200-21fschecks_count22:05:163
322992399391,13cyclictest3323865-21grep23:40:153
322992399391,13cyclictest3259023-21proc_pri20:30:233
322992399391,12cyclictest3293317-21/usr/sbin/munin22:10:223
322992399391,10cyclictest3332852-21meminfo00:05:193
3229923993910,26cyclictest3260663-21ntp_states20:35:213
322992399390,3cyclictest0-21swapper/320:00:103
3229918993931,5cyclictest3246220-21auditctl19:55:022
3229915993929,7cyclictest438-21cron22:40:011
322992399383,29cyclictest3251734-21sort20:10:153
322992399382,4cyclictest3241138-21apt-get19:40:133
322992399381,9cyclictest3335810-21apt-get00:15:133
322992399381,6cyclictest3339391-21/usr/sbin/munin00:25:173
322992399381,6cyclictest3320357-21df_inode23:30:153
322992399381,3cyclictest3249979-21df20:05:143
322992399381,3cyclictest0-21swapper/322:50:143
322992399381,3cyclictest0-21swapper/321:10:123
322992399381,3cyclictest0-21swapper/320:50:103
322992399381,3cyclictest0-21swapper/300:20:133
3229918993827,7cyclictest311ktimers/223:25:122
3229918993826,9cyclictest311ktimers/220:10:122
3229915993831,4cyclictest3290797-21cron22:05:011
3229915993831,4cyclictest3290797-21cron22:05:001
3229915993829,6cyclictest3250890-21unixbench_multi20:05:271
3229912993818,4cyclictest131rcu_preempt20:31:340
322992399373,29cyclictest3230190-21df_inode19:10:163
322992399373,28cyclictest3280581-21apt-get21:35:133
322992399373,28cyclictest3280581-21apt-get21:35:133
322992399371,4cyclictest3301422-21/usr/sbin/munin22:35:153
322992399371,4cyclictest3297447-21sshd22:22:593
322992399371,3cyclictest3330613-21/usr/sbin/munin00:00:153
322992399370,3cyclictest0-21swapper/323:00:123
322992399370,3cyclictest0-21swapper/300:35:113
3229918993728,4cyclictest0-21swapper/200:25:172
3229912993729,4cyclictest3344117-21basename00:40:000
3229912993727,5cyclictest3304092-21kworker/u8:2+events_unbound22:42:420
3229912993725,7cyclictest0-21swapper/019:55:010
3229912993717,10cyclictest131rcu_preempt20:56:590
322992399361,3cyclictest0-21swapper/320:15:133
322992399360,3cyclictest0-21swapper/322:30:093
322991599366,15cyclictest24-21ksoftirqd/121:45:011
3229912993627,6cyclictest0-21swapper/020:45:250
3229912993626,6cyclictest0-21swapper/019:15:170
3229912993617,4cyclictest131rcu_preempt20:10:530
3229912993613,19cyclictest121ktimers/021:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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