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2026-04-05 - 23:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.

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 rack7slot3s.osadl.org (updated Sun Apr 05, 2026 12:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
360422230,2sleep10-21swapper/116:26:051
759521720,4sleep3446499cyclictest20:16:523
321232800,5sleep0445599cyclictest20:07:350
93042790,4sleep09291-21ssh19:01:050
261462780,5sleep3446499cyclictest20:40:153
165972780,6sleep0445599cyclictest18:31:010
165972780,6sleep0445599cyclictest18:31:010
92712770,4sleep1221ktimersoftd/120:58:131
260342750,2sleep30-21swapper/321:57:053
446399732,6cyclictest0-21swapper/219:05:392
104722730,3sleep3381ktimersoftd/319:41:053
446499675,20cyclictest15783-21ssh18:30:443
446499675,20cyclictest15783-21ssh18:30:443
245522670,3sleep34447-21cyclictest18:40:553
445999665,11cyclictest7950irq/56-dwc_otg_19:25:381
445599667,31cyclictest0-21swapper/016:50:520
4463996541,19cyclictest7950irq/56-dwc_otg_20:35:512
446399653,4cyclictest10409-21fschecks_time18:15:562
29162650,2sleep20-21swapper/217:55:532
446399641,8cyclictest0-21swapper/220:45:472
445599646,45cyclictest0-21swapper/019:10:500
445999632,5cyclictest30686-21ls17:41:041
445999631,13cyclictest14970-21dpkg21:05:391
445999631,13cyclictest14970-21dpkg21:05:391
446399624,13cyclictest7950irq/56-dwc_otg_17:40:562
445999622,6cyclictest0-21swapper/120:45:471
445999622,4cyclictest0-21swapper/118:46:051
445999621,6cyclictest24483-21grep21:55:541
445999617,11cyclictest7750irq/56-dwc_otg18:15:531
445999612,4cyclictest0-21swapper/118:55:391
4459996113,42cyclictest0-21swapper/120:10:521
445999611,13cyclictest0-21swapper/119:00:021
97442600,5sleep2446399cyclictest19:40:562
446399602,5cyclictest7850irq/56-dwc_otg_16:51:062
446399601,5cyclictest28276-21fschecks_time17:35:542
445999608,20cyclictest0-21swapper/120:50:511
445999607,9cyclictest7950irq/56-dwc_otg_20:17:091
445999606,9cyclictest7950irq/56-dwc_otg_18:40:521
445999601,13cyclictest15312-21/usr/sbin/munin17:00:571
445999601,13cyclictest15312-21/usr/sbin/munin17:00:571
445999596,4cyclictest0-21swapper/119:59:411
445999594,10cyclictest7950irq/56-dwc_otg_19:26:001
4459995913,5cyclictest18700-21modprobe17:10:381
445999591,10cyclictest17796-21ssh21:08:301
445599591,39cyclictest25577-21systemd-journal17:05:390
445599591,39cyclictest25577-21systemd-journal17:05:390
446399587,3cyclictest0-21swapper/218:34:002
446399587,3cyclictest0-21swapper/218:34:002
446399585,50cyclictest0-21swapper/220:00:502
446399584,6cyclictest0-21swapper/221:30:562
446399582,15cyclictest0-21swapper/220:21:022
446399581,10cyclictest10024-21aten_rbpower_vo16:45:522
445999582,5cyclictest10797-21ls20:20:591
445999581,9cyclictest16563-21latency_hist19:10:391
4459995815,40cyclictest19371-21aten_rbpower_cu21:10:531
445999581,4cyclictest7750irq/56-dwc_otg20:06:011
445999581,3cyclictest0-21swapper/116:51:031
445999581,14cyclictest6606-21tune2fs16:35:561
445999581,11cyclictest7950irq/56-dwc_otg_19:17:051
445999581,11cyclictest7950irq/56-dwc_otg_19:17:051
445599583,34cyclictest0-21swapper/016:40:500
4455995828,7cyclictest23932-21kworker/u8:320:36:070
445599582,27cyclictest9-21ksoftirqd/021:55:490
446399578,4cyclictest0-21swapper/221:21:252
446399576,4cyclictest7750irq/56-dwc_otg18:46:072
445999575,12cyclictest7950irq/56-dwc_otg_21:44:541
445999571,9cyclictest21491-21ssh20:34:211
445999571,9cyclictest18242-21rm19:11:181
4459995719,35cyclictest25912-21idleruntime-cro17:30:381
445999571,6cyclictest3979-21ssh19:34:121
445999571,5cyclictest3709-21df_inode21:30:541
4459995713,4cyclictest9786-21idleruntime-cro18:15:381
445999571,13cyclictest0-21swapper/118:25:511
445999571,12cyclictest2621-21latency_hist17:55:381
445999571,12cyclictest2621-21latency_hist17:55:381
445999571,12cyclictest0-21swapper/117:35:521
445999571,10cyclictest10702-21ssh21:39:181
445599579,24cyclictest0-21swapper/019:45:520
445599579,24cyclictest0-21swapper/019:45:520
446399567,12cyclictest15410-21diskmemload21:20:062
446399563,9cyclictest7950irq/56-dwc_otg_19:46:032
446399563,9cyclictest7950irq/56-dwc_otg_19:46:032
446399563,6cyclictest7950irq/56-dwc_otg_21:55:582
446399563,11cyclictest3295-21rm18:54:292
446399561,5cyclictest7850irq/56-dwc_otg_20:43:192
445999562,14cyclictest7950irq/56-dwc_otg_19:45:391
445999561,17cyclictest7850irq/56-dwc_otg_19:05:391
4455995627,3cyclictest0-21swapper/021:36:040
445599562,36cyclictest0-21swapper/019:50:500
446399555,5cyclictest7750irq/56-dwc_otg21:05:452
4463995521,30cyclictest8719-21ls21:36:032
445999553,10cyclictest7850irq/56-dwc_otg_20:40:261
445999551,8cyclictest0-21swapper/121:19:421
445999551,5cyclictest31622-21grep21:25:391
445999551,4cyclictest13436-21apt-get19:45:511
445999551,4cyclictest13436-21apt-get19:45:511
4455995517,22cyclictest8953-21idleruntime-cro19:40:380
40322553,12sleep00-21swapper/016:28:360
446399546,13cyclictest0-21swapper/219:11:432
445999542,9cyclictest0-21swapper/121:51:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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