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2026-06-02 - 05:00

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 Jun 02, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2701999440,12cyclictest0-21swapper/321:44:333
2701999440,12cyclictest0-21swapper/321:44:333
6822920,6sleep015-21rcuc/019:01:270
219499890,27rtkit-daemon21641-21yum-updatesd-he19:44:491
219499890,27rtkit-daemon21641-21yum-updatesd-he19:44:491
219499850,26rtkit-daemon10502-21df19:21:271
219499830,26rtkit-daemon0-21swapper/019:51:341
219499810,27rtkit-daemon0-21swapper/019:19:421
219499800,25rtkit-daemon0-21swapper/019:36:341
259372760,7sleep10-21swapper/121:49:481
259372760,7sleep10-21swapper/121:49:481
270099715,59cyclictest0-21swapper/222:54:232
270099704,59cyclictest0-21swapper/223:00:202
270099704,59cyclictest0-21swapper/222:27:152
270099704,59cyclictest0-21swapper/222:27:152
270099694,58cyclictest0-21swapper/222:23:232
270099685,56cyclictest0-21swapper/221:45:212
270099685,56cyclictest0-21swapper/221:45:212
270099685,56cyclictest0-21swapper/200:08:352
270099684,57cyclictest0-21swapper/221:51:292
270099684,57cyclictest0-21swapper/200:03:332
270099674,56cyclictest23804-21taskset22:34:022
270099674,56cyclictest1227-21runrttasks00:33:372
270099674,56cyclictest1227-21runrttasks00:33:372
270099674,56cyclictest0-21swapper/223:33:262
270099674,55cyclictest0-21swapper/223:49:452
269499674,56cyclictest0-21swapper/023:52:250
269499674,56cyclictest0-21swapper/023:52:250
270099664,55cyclictest0-21swapper/222:43:092
219499660,5rtkit-daemon2193-21rtkit-daemon23:40:553
270099654,53cyclictest0-21swapper/221:47:522
270099654,53cyclictest0-21swapper/221:47:522
2698996523,34cyclictest7284-21munin-node23:46:311
269499653,54cyclictest0-21swapper/021:56:090
219499650,7rtkit-daemon0-21swapper/019:31:271
270099645,52cyclictest0-21swapper/200:16:262
270099644,53cyclictest0-21swapper/223:51:352
270099644,53cyclictest0-21swapper/223:51:352
270099644,53cyclictest0-21swapper/221:31:272
270099643,54cyclictest0-21swapper/222:11:182
269499644,52cyclictest0-21swapper/023:44:440
217522647,12sleep00-21swapper/023:18:360
270099634,52cyclictest0-21swapper/223:21:342
270099634,51cyclictest0-21swapper/223:44:312
270099634,29cyclictest0-21swapper/200:11:222
270099624,51cyclictest0-21swapper/222:36:302
270099624,51cyclictest0-21swapper/200:26:292
269499624,50cyclictest0-21swapper/000:19:550
115872625,11sleep00-21swapper/023:03:250
270099615,50cyclictest0-21swapper/220:16:242
270099614,50cyclictest0-21swapper/223:11:272
270099614,50cyclictest0-21swapper/221:07:532
270099613,49cyclictest3152-21df_abs21:16:242
269499614,51cyclictest0-21swapper/022:11:230
269499614,50cyclictest0-21swapper/023:38:110
269499614,50cyclictest0-21swapper/000:23:330
219499610,6rtkit-daemon0-21swapper/019:56:411
290452604,48sleep30-21swapper/323:30:373
270099604,49cyclictest3644-21munin-run23:41:032
270099604,49cyclictest15887-21users23:56:392
270099603,50cyclictest0-21swapper/221:11:412
269899604,24cyclictest0-21swapper/123:31:511
269499604,50cyclictest0-21swapper/022:34:000
269499603,51cyclictest0-21swapper/022:29:070
269499603,51cyclictest0-21swapper/022:29:070
184582604,47sleep10-21swapper/100:01:271
81702593,50sleep00-21swapper/021:22:060
270099593,49cyclictest0-21swapper/223:16:222
270099593,49cyclictest0-21swapper/221:21:242
270099592,51cyclictest0-21swapper/222:17:592
269499594,49cyclictest0-21swapper/021:09:390
269499594,48cyclictest0-21swapper/023:59:430
269499594,48cyclictest0-21swapper/021:57:270
269499593,21cyclictest107550irq/46-eth022:57:050
219499590,6rtkit-daemon2193-21rtkit-daemon19:01:283
270199584,46cyclictest0-21swapper/323:09:383
270199584,46cyclictest0-21swapper/323:09:383
270099584,48cyclictest0-21swapper/222:01:352
270099584,47cyclictest0-21swapper/221:38:072
270099584,46cyclictest31003-21iostat_ios21:56:302
270099584,45cyclictest20835-21taskset20:51:252
270099583,48cyclictest32662-21netstat22:46:322
270099583,48cyclictest12598-21munin-node23:06:192
270099583,48cyclictest12598-21munin-node23:06:192
269899584,27cyclictest0-21swapper/121:51:391
2698995820,21cyclictest0-21swapper/122:31:421
269499584,48cyclictest0-21swapper/000:06:230
269499583,50cyclictest0-21swapper/023:32:180
172542583,12sleep00-21swapper/020:41:390
2701995740,11cyclictest10379-21sort23:01:303
270199574,46cyclictest0-21swapper/321:46:393
270199574,46cyclictest0-21swapper/321:46:393
270199574,45cyclictest0-21swapper/320:51:103
270199573,36cyclictest0-21swapper/319:57:263
2701995724,26cyclictest0-21swapper/321:16:223
270199572,49cyclictest0-21swapper/322:00:343
270099576,44cyclictest0-21swapper/221:26:262
270099574,46cyclictest10557-21ssh23:01:332
269899574,36cyclictest0-21swapper/100:32:581
269899574,36cyclictest0-21swapper/100:32:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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