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2025-11-18 - 05:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Tue Nov 18, 2025 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
243799880,7rtkit-daemon0-21swapper/120:36:451
243799880,5rtkit-daemon10183-21latency_hist22:27:551
243799880,5rtkit-daemon10183-21latency_hist22:27:551
243799870,8rtkit-daemon0-21swapper/121:24:201
894799855,48cyclictest12394-21munin-run22:32:543
243799850,7rtkit-daemon0-21swapper/022:32:552
243799750,6rtkit-daemon0-21swapper/122:18:111
243799730,8rtkit-daemon0-21swapper/020:38:221
243799730,7rtkit-daemon0-21swapper/319:48:323
243799730,5rtkit-daemon18-21rcuc/121:37:571
243799720,6rtkit-daemon0-21swapper/120:43:151
243799720,5rtkit-daemon18-21rcuc/120:33:001
8947997122,40cyclictest4822-21unixbench_singl22:13:293
8947997116,46cyclictest12696-21munin-node20:18:373
243799700,6rtkit-daemon18-21rcuc/121:03:291
243799690,4rtkit-daemon2436-21rtkit-daemon19:13:031
243799690,4rtkit-daemon2436-21rtkit-daemon19:07:181
243799690,4rtkit-daemon2436-21rtkit-daemon00:28:363
243799680,7rtkit-daemon0-21swapper/021:57:041
243799680,6rtkit-daemon0-21swapper/121:59:341
243799680,5rtkit-daemon2436-21rtkit-daemon19:18:101
243799680,5rtkit-daemon2436-21rtkit-daemon19:09:111
894799673,13cyclictest0-21swapper/322:07:553
8947996716,36cyclictest18556-21munin-node23:53:133
8938996746,14cyclictest0-21swapper/021:02:590
243799670,5rtkit-daemon2436-21rtkit-daemon00:14:513
243799670,4rtkit-daemon2436-21rtkit-daemon22:59:473
8947996518,26cyclictest10998-21fschecks_time20:13:193
8947996518,26cyclictest10998-21fschecks_time20:13:193
894699655,52cyclictest0-21swapper/221:38:092
894699655,52cyclictest0-21swapper/221:38:092
243799650,5rtkit-daemon34-21rcuc/320:07:383
243799650,5rtkit-daemon2829-21yum-updatesd-he19:57:163
8938996442,15cyclictest0-21swapper/019:18:320
8947996314,40cyclictest1243-21snmpd20:23:373
894699634,51cyclictest0-21swapper/221:17:582
243799630,5rtkit-daemon27154-21ntp_states19:38:323
243799630,5rtkit-daemon19730-21iostat_ios19:23:253
8947996218,36cyclictest31566-21latency00:18:153
894699624,50cyclictest0-21swapper/221:58:162
894699624,50cyclictest0-21swapper/200:08:172
894499626,28cyclictest0-21swapper/121:17:571
8944996239,15cyclictest0-21swapper/121:12:581
305272623,12sleep20-21swapper/220:53:252
243799620,8rtkit-daemon0-21swapper/022:28:401
243799620,7rtkit-daemon0-21swapper/022:08:491
243799620,6rtkit-daemon0-21swapper/219:03:043
243799620,6rtkit-daemon0-21swapper/022:06:191
243799620,5rtkit-daemon0-21swapper/219:44:023
8944996111,41cyclictest0-21swapper/100:30:291
8938996134,9cyclictest0-21swapper/021:33:160
311642613,12sleep20-21swapper/222:03:142
243799610,8rtkit-daemon0-21swapper/021:27:581
243799610,14rtkit-daemon2436-21rtkit-daemon22:38:333
894799605,48cyclictest19859-21munin-node20:33:273
8947996011,28cyclictest19619-21crond20:32:593
8947996010,42cyclictest0-21swapper/320:42:593
894699604,49cyclictest0-21swapper/222:13:262
8944996037,15cyclictest0-21swapper/123:08:151
8944996037,15cyclictest0-21swapper/123:08:151
8944996010,26cyclictest0-21swapper/121:48:111
243799600,6rtkit-daemon0-21swapper/020:49:521
18792603,49sleep00-21swapper/023:18:090
8947995942,10cyclictest7808-21needreboot23:28:173
8947995927,24cyclictest14628-21gltestperf23:43:143
8947995920,31cyclictest26139-21cut21:53:103
8946995912,29cyclictest0-21swapper/200:13:022
8938995940,13cyclictest0-21swapper/021:57:570
894799589,30cyclictest0-21swapper/323:37:523
8947995816,19cyclictest27064-21runrttasks23:03:063
8947995814,37cyclictest0-21swapper/323:08:083
8947995814,37cyclictest0-21swapper/323:08:083
8947995813,39cyclictest0-21swapper/320:43:333
894699584,47cyclictest0-21swapper/222:33:092
894699583,48cyclictest0-21swapper/220:29:332
894699583,37cyclictest0-21swapper/223:49:252
894699583,37cyclictest0-21swapper/223:49:252
92932573,12sleep00-21swapper/019:03:180
894799579,26cyclictest3002-21cat22:12:563
8947995714,37cyclictest0-21swapper/320:52:593
8947995710,31cyclictest0-21swapper/321:38:133
8947995710,31cyclictest0-21swapper/321:38:133
8947995710,26cyclictest23528-21telnet21:48:113
894699574,46cyclictest0-21swapper/221:32:582
894799568,32cyclictest0-21swapper/323:22:473
894799564,38cyclictest0-21swapper/321:47:573
894799564,38cyclictest0-21swapper/321:47:573
8947995613,26cyclictest0-21swapper/323:58:033
8947995612,36cyclictest0-21swapper/320:58:113
894499564,33cyclictest0-21swapper/120:03:251
8944995635,14cyclictest0-21swapper/123:38:051
893899563,43cyclictest0-21swapper/021:43:100
893899563,43cyclictest0-21swapper/021:43:100
894799556,32cyclictest0-21swapper/319:08:143
894799555,31cyclictest0-21swapper/300:12:503
8947995538,10cyclictest14691-21head21:28:193
8947995537,12cyclictest24204-21sed00:03:113
8947995512,37cyclictest28759-21df_abs21:58:133
8947995512,35cyclictest22112-21iostat_ios19:28:253
8947995512,35cyclictest22112-21iostat_ios19:28:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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