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2026-05-18 - 18:26

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 Mon May 18, 2026 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1792021230,2sleep20-21swapper/211:27:472
1792021230,2sleep20-21swapper/211:27:472
1792021230,2sleep20-21swapper/211:27:472
149222720,2sleep30-21swapper/308:27:423
191562680,3chrt0-21swapper/208:37:502
191562680,3chrt0-21swapper/208:37:502
39442630,3sleep20-21swapper/212:17:442
39442630,3sleep20-21swapper/212:17:442
100272540,1sleep19044-21/usr/sbin/munin12:32:511
100272540,1sleep19044-21/usr/sbin/munin12:32:511
91322530,3sleep30-21swapper/312:32:403
91322530,3sleep30-21swapper/312:32:403
51652520,2sleep05258-21cpuspeed08:02:400
51652520,2sleep05258-21cpuspeed08:02:400
51652520,2sleep05258-21cpuspeed08:02:400
102942520,2sleep30-21swapper/311:07:463
102942520,2sleep30-21swapper/311:07:463
40332510,3sleep30-21swapper/312:17:453
40332510,3sleep30-21swapper/312:17:453
220022510,3sleep20-21swapper/211:37:522
220022510,3sleep20-21swapper/211:37:522
262392500,1sleep10-21swapper/107:32:331
262392500,1sleep10-21swapper/107:32:331
282052490,1sleep0171ktimers/010:27:510
282052490,1sleep0171ktimers/010:27:510
282052490,1sleep0171ktimers/010:27:510
208882490,2sleep020887-21uptime10:07:530
208882490,2sleep020887-21uptime10:07:530
208882490,2sleep020887-21uptime10:07:530
231202460,3sleep023124-21cut11:42:400
231202460,3sleep023124-21cut11:42:400
231202460,3sleep023124-21cut11:42:400
291322440,2sleep029325-21grep10:32:420
291322440,2sleep029325-21grep10:32:420
291322440,2sleep029325-21grep10:32:420
101712420,2sleep20-21swapper/209:42:392
101712420,2sleep20-21swapper/209:42:392
101712420,2sleep20-21swapper/209:42:392
89602400,3sleep10-21swapper/108:12:411
89602400,3sleep10-21swapper/108:12:411
219552390,3sleep00-21swapper/010:12:430
219552390,3sleep00-21swapper/010:12:430
219552390,3sleep00-21swapper/010:12:430
19001993930,7cyclictest19863-21cut10:07:421
19001993930,7cyclictest19863-21cut10:07:421
19001993930,7cyclictest19863-21cut10:07:421
79892380,2sleep00-21swapper/008:07:490
79892380,2sleep00-21swapper/008:07:490
19001993828,7cyclictest24868-21fschecks_time11:47:411
127712380,2sleep30-21swapper/309:47:463
136312370,3sleep10-21swapper/108:22:501
136312370,3sleep10-21swapper/108:22:501
19001993630,5cyclictest6400-21/usr/sbin/munin09:32:431
19001993630,5cyclictest6400-21/usr/sbin/munin09:32:431
19001993630,5cyclictest6400-21/usr/sbin/munin09:32:431
227102350,2sleep00-21swapper/008:47:450
227102350,2sleep00-21swapper/008:47:450
19001993529,4cyclictest18998-21cyclictest11:57:301
19001993529,4cyclictest18998-21cyclictest11:57:301
19001993529,4cyclictest18998-21cyclictest11:57:301
19000993529,4cyclictest381-21ntp_kernel_pll_12:07:490
19000993529,4cyclictest381-21ntp_kernel_pll_12:07:490
19000993529,4cyclictest381-21ntp_kernel_pll_12:07:490
19000993528,5cyclictest545-21in:imuxsock08:37:290
19000993528,5cyclictest545-21in:imuxsock08:37:290
229432340,3sleep30-21swapper/311:42:403
229432340,3sleep30-21swapper/311:42:403
229432340,3sleep30-21swapper/311:42:403
19001993429,3cyclictest7551-21grep11:02:281
19001993429,3cyclictest7551-21grep11:02:281
19001993328,3cyclictest29878-21gltestperf09:07:441
19001993328,3cyclictest29878-21gltestperf09:07:441
19001993327,4cyclictest1346-21avahi-daemon11:12:491
19001993327,4cyclictest1346-21avahi-daemon11:12:491
19000993327,4cyclictest18998-21cyclictest09:07:330
19000993327,4cyclictest18998-21cyclictest09:07:330
19000993325,6cyclictest8482-21fschecks_count09:37:420
19000993325,6cyclictest8482-21fschecks_count09:37:420
19000993325,6cyclictest8482-21fschecks_count09:37:420
132702330,2sleep20-21swapper/211:17:352
132702330,2sleep20-21swapper/211:17:352
258962320,4chrt0-21swapper/308:57:413
258962320,4chrt0-21swapper/308:57:413
19001993226,4cyclictest1346-21avahi-daemon12:02:491
19001993226,4cyclictest1346-21avahi-daemon12:02:491
19001993223,7cyclictest2053-21kernelversion12:12:441
19001993223,7cyclictest2053-21kernelversion12:12:441
19001993223,7cyclictest2053-21kernelversion12:12:441
19000993226,4cyclictest30592-21gltestperf12:02:420
19000993226,4cyclictest30592-21gltestperf12:02:420
19000993225,5cyclictest1005-21ntp_kernel_pll_10:42:470
19000993225,5cyclictest1005-21ntp_kernel_pll_10:42:470
19000993223,7cyclictest13559-21fschecks_count11:17:410
19000993222,8cyclictest17667-21kernelversion11:27:430
19000993222,8cyclictest17667-21kernelversion11:27:430
19000993222,8cyclictest17667-21kernelversion11:27:430
19000993218,12cyclictest0-21swapper/008:52:380
19000993218,12cyclictest0-21swapper/008:52:380
240292310,4sleep20-21swapper/208:52:372
240292310,4sleep20-21swapper/208:52:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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