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2026-05-01 - 05:05

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #7

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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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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot7s.osadl.org (updated Fri May 01, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3816210062,33sleep00-21swapper/019:09:400
365329267,9sleep20-21swapper/219:07:322
369229164,9sleep30-21swapper/319:08:013
170628565,16sleep10-21swapper/119:05:031
114372770,3sleep125-21ksoftirqd/121:37:331
210012530,0sleep00-21swapper/021:24:250
394399230,0cyclictest0-21swapper/322:35:243
3936992320,2cyclictest16099-21sed23:55:261
3936992316,3cyclictest25-21ksoftirqd/122:14:591
393699231,1cyclictest21952-21cat20:55:011
393699231,1cyclictest21952-21cat20:55:001
393399239,7cyclictest13-21ksoftirqd/000:15:270
3933992210,5cyclictest13-21ksoftirqd/023:01:580
3933992116,2cyclictest13-21ksoftirqd/000:07:210
393399210,20cyclictest0-21swapper/000:32:090
394199200,1cyclictest0-21swapper/200:36:432
393699202,17cyclictest0-21swapper/121:14:441
394399190,2cyclictest0-21swapper/323:08:423
394199195,12cyclictest12082-21runrttasks22:16:232
394199192,1cyclictest0-21swapper/222:41:282
394199190,18cyclictest0-21swapper/221:31:502
3933991917,1cyclictest13-21ksoftirqd/023:34:210
3933991911,1cyclictest13-21ksoftirqd/022:17:070
393399190,19cyclictest0-21swapper/023:51:090
394199181,2cyclictest0-21swapper/221:11:412
3936991816,2cyclictest25-21ksoftirqd/121:33:491
3933991811,2cyclictest13-21ksoftirqd/000:26:220
394399170,1cyclictest0-21swapper/322:06:313
393399170,0cyclictest141rcu_preempt22:33:220
394399162,14cyclictest0-21swapper/321:48:263
3943991613,1cyclictest0-21swapper/300:01:163
394199162,3cyclictest32-21ksoftirqd/220:50:012
394199160,1cyclictest0-21swapper/222:49:052
394199160,1cyclictest0-21swapper/220:40:112
394199160,16cyclictest0-21swapper/200:27:432
394199160,14cyclictest0-21swapper/223:37:552
393699162,8cyclictest29448-21idleruntime-cro23:44:591
393699160,3cyclictest0-21swapper/122:26:331
393699160,1cyclictest0-21swapper/123:21:151
393699160,16cyclictest0-21swapper/100:24:151
393399167,1cyclictest13-21ksoftirqd/000:01:410
393399166,4cyclictest21732-21apt-get20:55:030
393399163,0cyclictest141rcu_preempt22:39:070
99362150,0sleep10-21swapper/122:15:211
394399156,8cyclictest1370-21apache223:45:503
394399152,11cyclictest14366-21runrttasks23:15:343
394399150,2cyclictest0-21swapper/323:52:343
394199155,8cyclictest29146-21diskmemload22:35:162
394199155,4cyclictest7569-21apt-config21:55:002
3936991515,0cyclictest0-21swapper/122:44:571
3936991515,0cyclictest0-21swapper/121:52:471
393699150,1cyclictest0-21swapper/123:36:231
393399156,3cyclictest141rcu_preempt21:40:450
393399151,7cyclictest18177-21munin-run19:39:590
3933991513,1cyclictest13-21ksoftirqd/021:13:040
393399151,1cyclictest141rcu_preempt21:29:000
3933991511,3cyclictest13-21ksoftirqd/021:30:170
3933991510,4cyclictest487-21avahi-daemon00:38:190
3933991510,2cyclictest13-21ksoftirqd/023:36:360
393399150,1cyclictest141rcu_preempt20:40:160
393399150,0cyclictest141rcu_preempt00:21:550
394399141,6cyclictest225-21systemd-journal22:25:503
3943991413,1cyclictest0-21swapper/322:22:203
394399141,1cyclictest0-21swapper/322:32:183
3943991411,2cyclictest28654-21cut20:00:163
3943991410,3cyclictest803-21tr20:10:173
394399140,13cyclictest0-21swapper/323:25:203
394199143,9cyclictest18164-21cron19:39:592
394199142,2cyclictest26828-21/usr/sbin/munin22:25:202
3941991411,2cyclictest24706-21ls00:00:292
394199140,0cyclictest0-21swapper/220:50:142
394199140,0cyclictest0-21swapper/220:50:132
393699146,5cyclictest27264-21apache222:06:591
3936991411,2cyclictest12203-21cron20:35:001
3936991410,3cyclictest0-21swapper/121:24:261
393699140,1cyclictest29146-21diskmemload22:58:401
393399143,1cyclictest141rcu_preempt21:54:220
3933991413,1cyclictest13-21ksoftirqd/023:24:390
3933991413,1cyclictest0-21swapper/022:50:170
3933991411,3cyclictest0-21swapper/020:50:140
3933991411,3cyclictest0-21swapper/020:50:130
393399141,0cyclictest141rcu_preempt23:07:080
3933991410,3cyclictest10612-21grep19:20:260
393399140,14cyclictest0-21swapper/022:13:540
394399139,3cyclictest29146-21diskmemload21:34:173
394399139,3cyclictest17079-21wc00:35:253
394399139,2cyclictest22288-21wc00:20:013
3943991310,2cyclictest9834-21sed21:55:263
3943991310,2cyclictest3672-21grep20:15:163
3943991310,2cyclictest19277-21taskset23:00:053
3943991310,2cyclictest16291-21grep19:35:123
394199133,9cyclictest13716-21cron23:54:592
394199133,7cyclictest22941-21ls19:49:592
3941991312,1cyclictest0-21swapper/200:12:332
3941991310,2cyclictest7162-21grep19:15:172
3941991310,2cyclictest31055-21wc23:45:192
3941991310,2cyclictest29537-21cat20:00:252
3941991310,2cyclictest28785-21grep23:05:202
3941991310,2cyclictest24887-21grep22:05:132
3941991310,2cyclictest23848-21grep21:25:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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