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2026-08-31 - 13:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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.
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 rackeslot3s.osadl.org (updated Mon Aug 31, 2026 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4398279910231,36cyclictest450335-21sh21:19:271
43982199942,12cyclictest495174-21sort22:55:010
43982199913,14cyclictest450642-21modprobe21:20:000
439821998733,50cyclictest520996-21ssh23:50:020
439821998523,57cyclictest12-21ksoftirqd/023:35:030
439821998523,57cyclictest12-21ksoftirqd/023:35:020
43982199852,14cyclictest444434-21munin-run20:40:010
43982199852,14cyclictest444434-21munin-run20:40:000
439821998418,56cyclictest16850irq/134-800000021:20:440
43982199832,64cyclictest447310-21ssh21:12:470
43982199832,64cyclictest447310-21ssh21:12:460
439821998213,63cyclictest0-21swapper/000:40:000
439821998115,7cyclictest16850irq/134-800000000:04:150
43982199801,75cyclictest0-21swapper/022:46:540
43982199801,75cyclictest0-21swapper/022:46:530
43982199794,18cyclictest462267-21modprobe21:44:590
439821997729,30cyclictest523430-21ssh23:55:100
439821997717,5cyclictest16850irq/134-800000000:22:470
439821997717,43cyclictest16850irq/134-800000023:24:100
439821997717,43cyclictest16850irq/134-800000023:24:090
43982199771,60cyclictest474805-21ssh22:11:120
439821997627,32cyclictest496935-21ssh22:59:030
439821997538,20cyclictest469158-21ssh21:59:400
439821997538,20cyclictest469158-21ssh21:59:400
439821997326,43cyclictest466381-21ssh21:53:340
439821997322,33cyclictest457539-21ssh21:34:560
439821997318,50cyclictest16850irq/134-800000023:11:150
439821997317,7cyclictest16850irq/134-800000023:46:410
43982199731,2cyclictest0-21swapper/022:30:230
439821997312,43cyclictest16850irq/134-800000023:29:550
439821997228,27cyclictest477037-21ssh22:16:030
439821997228,27cyclictest477037-21ssh22:16:020
439821997225,30cyclictest486356-21ssh22:35:540
439821997224,41cyclictest309-21in:imuxsock23:03:150
43982799712,39cyclictest521936-21ssh23:52:101
43982199716,24cyclictest441310-21cron19:40:000
439821997118,35cyclictest16850irq/134-800000000:14:140
43982199711,66cyclictest529343-21ssh00:08:010
43982199696,14cyclictest446005-21modprobe21:10:000
43982199693,9cyclictest481125-21latency_hist22:25:010
43982199692,12cyclictest455435-21latency_hist21:30:020
439821996917,7cyclictest459220-21ssh21:38:270
43982199691,51cyclictest0-21swapper/022:06:590
43982799682,32cyclictest457533-21ssh21:34:501
439821996828,24cyclictest463044-21ssh21:46:110
439827996729,34cyclictest516895-21sh23:41:121
439827996727,36cyclictest476356-21pluginstate22:15:011
43982799672,31cyclictest445995-21modprobe21:10:011
439821996740,24cyclictest16950irq/224-800000020:25:010
439821996726,37cyclictest0-21swapper/000:26:520
439827996628,33cyclictest502323-21sh23:10:081
43982199669,16cyclictest489813-21ssh22:43:280
43982199662,59cyclictest0-21swapper/019:20:000
43982799652,59cyclictest470021-21ssh22:01:051
43982799651,59cyclictest494040-21ssh22:52:311
43982799651,38cyclictest512305-21ssh23:31:301
43982799651,38cyclictest512305-21ssh23:31:291
439821996530,31cyclictest1-21systemd20:15:010
439821996530,30cyclictest0-21swapper/023:20:000
43982199651,60cyclictest0-21swapper/000:15:160
43982199651,60cyclictest0-21swapper/000:15:160
439831996417,8cyclictest30-21ksoftirqd/221:40:012
43982799642,58cyclictest526951-21ssh00:02:541
43982799642,58cyclictest461888-21ssh21:44:041
43982799642,57cyclictest533755-21ssh00:17:241
43982799642,57cyclictest533755-21ssh00:17:231
439827996420,39cyclictest3467602-21systemd-journal22:35:021
43982799641,59cyclictest530670-21ssh00:10:431
43982799641,59cyclictest525169-21ssh23:59:221
43982799641,59cyclictest519082-21ssh23:45:511
43982799641,59cyclictest496596-21ssh22:58:081
43982799641,59cyclictest490441-21ssh22:44:481
43982799641,59cyclictest481442-21ssh22:25:251
43982799641,59cyclictest472227-21ssh22:05:461
43982799641,59cyclictest468248-21ssh21:57:321
43982799641,59cyclictest468248-21ssh21:57:321
43982799641,59cyclictest465204-21ssh21:50:471
43982799641,59cyclictest463326-21ssh21:46:571
43982799641,59cyclictest458115-21ssh21:35:461
43982799641,58cyclictest540216-21ssh00:31:161
439821996427,22cyclictest516562-21ssh23:40:310
43982799632,56cyclictest446267-21ssh21:10:071
43982799632,56cyclictest446267-21ssh21:10:071
43982799631,58cyclictest542635-21ssh00:36:281
43982799631,58cyclictest539292-21ssh00:29:401
43982799631,58cyclictest514976-21ssh23:37:211
43982799631,58cyclictest510272-21ssh23:27:051
43982799631,58cyclictest505376-21ssh23:16:471
43982799631,58cyclictest499991-21ssh23:05:041
43982799631,58cyclictest497964-21ssh23:00:511
43982799631,58cyclictest491558-21ssh22:47:071
43982799631,58cyclictest491558-21ssh22:47:061
43982799631,58cyclictest486225-21ssh22:35:371
43982799631,58cyclictest477945-21ssh22:18:191
43982799631,58cyclictest477945-21ssh22:18:181
43982799631,58cyclictest453910-21ssh21:26:431
43982799631,58cyclictest450890-21ssh21:20:051
43982199634,15cyclictest443388-21modprobe20:20:000
43982199633,21cyclictest440560-21grep19:25:000
439821996315,9cyclictest445994-21diskmemload22:00:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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