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2026-05-20 - 21:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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.

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 rack4slot1s.osadl.org (updated Wed May 20, 2026 12:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3168021400,3sleep20-21swapper/210:42:422
3168021400,3sleep20-21swapper/210:42:422
201082930,3sleep20-21swapper/211:37:462
113772800,3sleep20-21swapper/211:12:532
113772800,3sleep20-21swapper/211:12:532
113772800,3sleep20-21swapper/211:12:532
306482660,9sleep0171ktimers/007:47:410
306482660,9sleep0171ktimers/007:47:410
313102570,2sleep20-21swapper/207:47:472
313102570,2sleep20-21swapper/207:47:472
313102570,2sleep20-21swapper/207:47:472
3022560,3chrt0-21swapper/309:17:493
3022560,3chrt0-21swapper/309:17:493
223032530,2sleep017678-21cyclictest11:42:500
223032530,2sleep017678-21cyclictest11:42:500
220392530,2sleep30-21swapper/308:47:543
220392530,2sleep30-21swapper/308:47:543
199902530,1sleep120107-21/usr/sbin/munin11:37:461
314782430,3sleep30-21swapper/312:07:463
314782430,3sleep30-21swapper/312:07:463
17710994316,6cyclictest30896-21fschecks_time07:47:441
17710994316,6cyclictest30896-21fschecks_time07:47:441
17710994316,6cyclictest30896-21fschecks_time07:47:441
271562400,3chrt0-21swapper/011:57:420
271562400,3chrt0-21swapper/011:57:420
326432390,2sleep032641-21tail10:42:520
326432390,2sleep032641-21tail10:42:520
207762380,3sleep00-21swapper/010:12:450
207762380,3sleep00-21swapper/010:12:450
17710993729,6cyclictest17678-21cyclictest08:12:521
17707993728,7cyclictest24856-21cron07:32:300
17707993728,7cyclictest24856-21cron07:32:300
17707993630,4cyclictest26482-21unixbench_multi11:52:510
17707993628,6cyclictest10218-21netstat08:17:490
17707993628,6cyclictest10218-21netstat08:17:490
17707993530,3cyclictest18669-21latency_hist08:42:300
17707993530,3cyclictest18669-21latency_hist08:42:300
17710993326,5cyclictest21805-21gltestperf11:42:431
17710993326,5cyclictest21805-21gltestperf11:42:431
17710993324,7cyclictest14308-21threads08:27:541
17710993324,7cyclictest14308-21threads08:27:541
17710993323,7cyclictest16913-21threads11:27:521
17710993323,7cyclictest16913-21threads11:27:521
17710993323,7cyclictest16913-21threads11:27:521
17707993327,4cyclictest545-21in:imuxsock09:42:300
17707993327,4cyclictest545-21in:imuxsock09:42:300
17710993226,4cyclictest2238-21cpuspeed12:17:401
17710993226,4cyclictest2238-21cpuspeed12:17:401
17710993225,5cyclictest11306-21latency_hist08:22:351
17710993225,5cyclictest11306-21latency_hist08:22:351
17710993224,6cyclictest20363-21fschecks_count10:12:421
17710993224,6cyclictest20363-21fschecks_count10:12:421
17710993224,6cyclictest20363-21fschecks_count10:12:421
17710993224,6cyclictest16107-21fschecks_time11:27:431
17710993224,6cyclictest16107-21fschecks_time11:27:431
17707993228,3cyclictest1356-21head07:52:550
17707993228,3cyclictest1356-21head07:52:550
17707993227,3cyclictest0-21swapper/009:22:300
17707993227,3cyclictest0-21swapper/009:22:300
182632310,1sleep018302-21cpu10:07:400
182632310,1sleep018302-21cpu10:07:400
17710993123,6cyclictest11057-21fschecks_time09:47:431
17710993123,6cyclictest11057-21fschecks_time09:47:431
17707993121,8cyclictest4578-21kernelversion12:22:440
17707993121,8cyclictest4578-21kernelversion12:22:440
17707993121,8cyclictest4578-21kernelversion12:22:440
36252300,3sleep20-21swapper/208:02:302
36252300,3sleep20-21swapper/208:02:302
17707993024,5cyclictest13890-21unixbench-2d09:52:530
17707993024,5cyclictest13890-21unixbench-2d09:52:530
17707993023,5cyclictest4968-21latency_hist09:32:310
17707993023,5cyclictest4968-21latency_hist09:32:310
17707993023,5cyclictest4968-21latency_hist09:32:310
17707993023,5cyclictest10913-21unixbench_multi12:37:530
17707993023,5cyclictest10913-21unixbench_multi12:37:530
17707993022,6cyclictest17126-21unixbench_singl11:27:530
17707993022,6cyclictest17126-21unixbench_singl11:27:530
17707993022,6cyclictest17126-21unixbench_singl11:27:530
17710992925,3cyclictest28581-21latency_hist07:42:301
17710992925,3cyclictest28581-21latency_hist07:42:301
17710992923,4cyclictest749-21runrttasks07:27:451
17710992923,4cyclictest749-21runrttasks07:27:451
17710992922,5cyclictest5394-21sshd08:05:401
17710992922,5cyclictest5394-21sshd08:05:401
17710992922,5cyclictest5394-21sshd08:05:401
17707992923,4cyclictest749-21runrttasks08:42:530
17707992923,4cyclictest749-21runrttasks08:42:530
17707992923,4cyclictest749-21runrttasks08:42:530
17707992923,4cyclictest0-21swapper/007:17:520
17707992923,4cyclictest0-21swapper/007:17:520
17707992923,4cyclictest0-21swapper/007:17:520
17707992922,5cyclictest29702-21fschecks_count10:37:410
17707992922,5cyclictest29702-21fschecks_count10:37:410
17707992922,2cyclictest181rcu_preempt10:32:410
17707992922,2cyclictest181rcu_preempt10:32:410
17707992921,5cyclictest0-21swapper/009:32:430
17707992921,5cyclictest0-21swapper/009:32:430
17710992822,5cyclictest7614-21cron12:32:311
17710992822,5cyclictest7614-21cron12:32:311
17710992822,5cyclictest7614-21cron12:32:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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