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2026-08-11 - 00:22

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 Aug 10, 2026 12:44:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1060321040,3sleep20-21swapper/211:24:042
1060321040,3sleep20-21swapper/211:24:042
3089021000,4sleep30-21swapper/307:58:593
3089021000,4sleep30-21swapper/307:58:593
284582880,4sleep30-21swapper/309:19:033
284582880,4sleep30-21swapper/309:19:033
122472850,3sleep30-21swapper/308:34:083
120602760,3sleep20-21swapper/208:34:072
270592740,3chrt0-21swapper/207:48:572
278022720,3chrt0-21swapper/210:44:002
278022720,3chrt0-21swapper/210:44:002
215392700,3chrt0-21swapper/211:53:592
215392700,3chrt0-21swapper/211:53:592
251572660,3sleep20-21swapper/207:43:582
202822640,3sleep20-21swapper/208:58:482
202822640,3sleep20-21swapper/208:58:482
298822610,2sleep20-21swapper/210:49:022
302992590,3sleep20-21swapper/209:24:002
302992590,3sleep20-21swapper/209:24:002
1392799520,50cyclictest700-21192.168.115.40-manager12:17:260
204992510,3sleep20-21swapper/208:59:002
204992510,3sleep20-21swapper/208:59:002
159232500,3sleep20-21swapper/210:13:452
159232500,3sleep20-21swapper/210:13:452
198662480,3sleep2351rcuc/211:49:002
198662480,3sleep2351rcuc/211:49:002
1392799481,31cyclictest20667-21pluginstate10:24:040
1392799481,31cyclictest20667-21pluginstate10:24:040
1392799480,46cyclictest700-21192.168.115.40-manager12:02:240
1392799480,46cyclictest700-21192.168.115.40-manager12:02:240
302042450,1sleep10-21swapper/109:23:591
302042450,1sleep10-21swapper/109:23:591
250172450,2sleep125150-21cut12:04:001
250172450,2sleep125150-21cut12:04:001
1392799451,29cyclictest12295-21wc10:03:520
1392799451,29cyclictest12295-21wc10:03:520
1392799451,29cyclictest12295-21wc10:03:520
1392799450,43cyclictest700-21192.168.115.40-manager12:11:540
1392799450,43cyclictest700-21192.168.115.40-manager11:50:180
1392799450,43cyclictest700-21192.168.115.40-manager11:50:180
27962440,1sleep10-21swapper/109:38:461
27962440,1sleep10-21swapper/109:38:461
1392799441,28cyclictest749-21runrttasks08:07:520
1392799441,28cyclictest3034-21taskset08:10:460
1392799441,28cyclictest24190-21chrt07:40:030
1392799441,25cyclictest11202-21/usr/sbin/munin11:24:110
1392799441,25cyclictest11202-21/usr/sbin/munin11:24:110
1392799440,42cyclictest700-21192.168.115.40-manager12:36:510
1392799440,42cyclictest700-21192.168.115.40-manager12:36:510
1392799440,42cyclictest700-21192.168.115.40-manager12:29:390
1392799440,42cyclictest700-21192.168.115.40-manager12:24:200
1392799440,41cyclictest700-21192.168.115.40-manager12:21:200
1392799440,41cyclictest700-21192.168.115.40-manager12:21:200
1392799440,41cyclictest700-21192.168.115.40-manager12:05:350
1392799440,41cyclictest700-21192.168.115.40-manager12:05:350
1392799440,40cyclictest700-21192.168.115.40-manager09:56:470
1392799431,32cyclictest7713-21runrttasks11:17:500
1392799431,29cyclictest8216-21taskset09:51:440
1392799431,29cyclictest27290-21taskset09:14:140
1392799431,29cyclictest27290-21taskset09:14:140
1392799431,29cyclictest22717-21chrt11:57:470
1392799431,29cyclictest22717-21chrt11:57:470
1392799431,28cyclictest23033-21taskset10:29:150
1392799431,28cyclictest14327-21taskset08:40:500
1392799431,28cyclictest14327-21taskset08:40:500
1392799431,28cyclictest13133-21taskset11:29:550
1392799431,27cyclictest22269-21chrt09:03:560
1392799431,25cyclictest30612-21/usr/sbin/munin09:24:050
1392799431,25cyclictest30612-21/usr/sbin/munin09:24:050
1392799431,25cyclictest27522-21/usr/sbin/munin07:49:040
1392799431,25cyclictest14678-21systemd-journal09:36:310
1392799431,25cyclictest14678-21systemd-journal09:36:310
1392799431,24cyclictest0-21swapper/011:47:320
298812420,2sleep30-21swapper/309:23:573
298812420,2sleep30-21swapper/309:23:573
13927994219,21cyclictest23960-21cut10:34:000
13927994219,21cyclictest23960-21cut10:34:000
1392799421,29cyclictest15562-21open_files08:44:050
1392799421,28cyclictest6330-21taskset09:46:240
1392799420,28cyclictest8703-21taskset08:26:090
1392799411,37cyclictest26735-21users10:39:080
1392799411,37cyclictest26735-21users10:39:080
1392799411,27cyclictest749-21runrttasks12:41:120
1392799411,27cyclictest749-21runrttasks12:41:120
1392799411,27cyclictest21924-21chrt09:02:310
1392799411,27cyclictest21924-21chrt09:02:310
1392799411,26cyclictest18847-21/usr/sbin/munin10:19:050
1392799411,26cyclictest18847-21/usr/sbin/munin10:19:050
1392799410,27cyclictest16068-21latency_hist10:13:510
1392799410,27cyclictest16068-21latency_hist10:13:510
176912400,3sleep30-21swapper/311:43:593
1392799401,35cyclictest0-21swapper/011:00:200
1392799401,35cyclictest0-21swapper/011:00:200
1392799401,27cyclictest4784-21/usr/sbin/munin11:09:000
1392799401,26cyclictest20090-21seq08:57:530
1392799401,26cyclictest20090-21seq08:57:530
1392799401,25cyclictest18184-21taskset08:52:180
1392799400,27cyclictest15017-21chrt11:34:430
1392799400,27cyclictest15017-21chrt11:34:430
1392799400,26cyclictest30810-21taskset10:53:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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