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2026-08-19 - 07:33

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 Wed Aug 19, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
206672980,4sleep1201ktimersoftd/121:21:031
1003998616,25cyclictest107550irq/46-eth023:01:212
1003998616,25cyclictest107550irq/46-eth023:01:212
146982840,4sleep2281ktimersoftd/222:00:552
1003997929,42cyclictest1227-21runrttasks20:50:032
1003997725,44cyclictest26436-21unixbench-2d21:28:202
1003997724,34cyclictest18267-21gltestperf20:28:112
1003997722,33cyclictest26876-21ssh23:08:042
1003997716,36cyclictest0-21swapper/219:03:252
1003997629,27cyclictest22345-21yum-updatesd-he18:34:322
1003997624,31cyclictest30744-21ssh19:58:112
1003997622,37cyclictest8519-21rm21:52:302
1003997618,51cyclictest3724-21ssh20:07:182
1003997518,35cyclictest0-21swapper/220:54:442
1003997518,35cyclictest0-21swapper/220:54:442
1003997516,36cyclictest0-21swapper/222:19:222
1003997516,36cyclictest0-21swapper/222:19:222
1003997516,36cyclictest0-21swapper/222:12:582
1003997514,36cyclictest0-21swapper/220:18:252
1003997425,39cyclictest6186-21ssh20:08:542
1003997425,27cyclictest1227-21runrttasks22:11:172
1003997421,31cyclictest0-21swapper/221:43:132
1003997324,27cyclictest15073-21ssh21:13:012
1003997323,32cyclictest1227-21runrttasks19:53:032
1003997322,32cyclictest0-21swapper/223:03:062
1003997322,32cyclictest0-21swapper/223:03:062
1003997318,34cyclictest0-21swapper/219:34:332
1003997226,39cyclictest8328-21cut20:13:082
1003997226,39cyclictest8328-21cut20:13:082
1003997222,28cyclictest26169-21diskmemload22:28:132
1003997220,32cyclictest10554-21ssh21:05:102
1003997219,34cyclictest0-21swapper/222:39:282
1003997218,35cyclictest0-21swapper/222:03:082
1003997218,33cyclictest0-21swapper/221:08:002
1003997215,35cyclictest0-21swapper/221:18:022
1003997214,48cyclictest0-21swapper/220:37:062
1003997125,38cyclictest29599-21ssh21:33:202
1003997119,31cyclictest0-21swapper/222:52:132
1003997115,34cyclictest0-21swapper/223:12:542
1003997022,29cyclictest1124-21snmpd20:47:152
1003997017,46cyclictest20434-21needreboot19:38:172
1003996926,29cyclictest7952-21sa121:02:482
1003996924,37cyclictest0-21swapper/221:22:592
1003996922,30cyclictest12502-21ssh22:47:382
1003996920,41cyclictest0-21swapper/218:04:582
1003996819,42cyclictest0-21swapper/222:23:052
1003996818,42cyclictest852-21ssh21:38:592
1003996818,42cyclictest852-21ssh21:38:592
1003996816,44cyclictest0-21swapper/223:22:142
1003996816,33cyclictest0-21swapper/218:43:052
1003996719,41cyclictest0-21swapper/220:23:542
1003996715,45cyclictest0-21swapper/222:32:582
219499660,8rtkit-daemon0-21swapper/220:41:190
1003996620,38cyclictest0-21swapper/218:18:082
1003996617,41cyclictest0-21swapper/221:53:512
1003996617,34cyclictest0-21swapper/220:42:492
1003996522,26cyclictest23787-21munin-run19:47:512
1003996518,30cyclictest0-21swapper/218:13:142
1003996423,24cyclictest16102-21aten_r1power_cu22:52:562
1003996421,26cyclictest5916-21munin-run18:02:542
1003996320,28cyclictest7108-1kworker/2:0H18:23:242
1003996319,36cyclictest2289-21munin-run19:02:522
1003996319,36cyclictest18233-21telnet18:28:082
1003996318,37cyclictest0-21swapper/219:08:092
1003996313,42cyclictest0-21swapper/218:12:552
1003996313,42cyclictest0-21swapper/218:12:552
1003996218,30cyclictest0-21swapper/217:53:102
219499610,6rtkit-daemon0-21swapper/220:35:043
1003996112,33cyclictest0-21swapper/219:18:052
99799604,50cyclictest0-21swapper/021:33:060
100399609,34cyclictest0-21swapper/219:23:062
1003996018,34cyclictest22850-21munin-node18:38:252
1003996018,28cyclictest2186-1kworker/2:2H19:48:112
99799594,48cyclictest0-21swapper/022:58:080
99799594,48cyclictest0-21swapper/022:58:080
99799593,50cyclictest41ktimersoftd/022:43:030
62572593,12sleep00-21swapper/021:48:040
100399599,31cyclictest0-21swapper/219:13:032
100099593,48cyclictest0-21swapper/120:06:251
24392583,47sleep32547-21smartctl20:53:093
24392583,47sleep32547-21smartctl20:53:093
219499580,4rtkit-daemon2193-21rtkit-daemon20:02:430
99799574,46cyclictest0-21swapper/021:19:090
283682574,12sleep30-21swapper/320:43:133
1003995726,23cyclictest28780-21wc18:48:222
1003995717,32cyclictest0-21swapper/218:53:272
1003995717,32cyclictest0-21swapper/218:53:272
99799564,46cyclictest0-21swapper/022:48:240
99799564,46cyclictest0-21swapper/021:40:550
99799564,46cyclictest0-21swapper/021:40:550
99799564,45cyclictest13055-21rm21:58:060
99799564,45cyclictest0-21swapper/022:26:270
99799563,43cyclictest0-21swapper/022:07:450
318452562,9sleep10-21swapper/123:16:131
29612563,7sleep32966-21ssh23:21:393
1004995611,22cyclictest1888-21crond21:42:463
1004995611,22cyclictest1888-21crond21:42:463
99799556,42cyclictest0-21swapper/023:12:590
99799555,43cyclictest0-21swapper/023:02:590
99799555,43cyclictest0-21swapper/023:02:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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