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2026-05-02 - 03:11

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 Sat May 02, 2026 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2293022910,2sleep122907-21munin-run04:30:521
2770521280,4sleep027707-21rt-features08:16:190
27842880,5sleep02315099cyclictest05:01:180
52482850,2sleep10-21swapper/105:10:531
285252760,4sleep128521-21ssh09:36:081
173992750,5sleep12315199cyclictest05:41:201
23150997227,7cyclictest0-21swapper/009:36:050
23150997223,26cyclictest14947-21sh08:40:530
23262710,2sleep10-21swapper/109:42:571
2315199714,15cyclictest7750irq/56-dwc_otg04:51:021
23150997158,6cyclictest0-21swapper/008:54:220
2315099713,13cyclictest9450irq/48-DMA09:12:250
23151997051,4cyclictest21-21rcuc/106:36:031
23151997012,12cyclictest0-21swapper/107:46:031
2315099707,39cyclictest0-21swapper/006:36:030
61992690,2sleep30-21swapper/307:13:213
47962690,2sleep30-21swapper/306:33:593
2315099691,43cyclictest0-21swapper/009:41:050
77032670,7sleep1221ktimersoftd/107:52:571
2315199673,6cyclictest7850irq/56-dwc_otg_06:31:061
23151996520,5cyclictest7704-21sh07:15:531
222102640,2sleep30-21swapper/309:27:533
2315099634,21cyclictest4718-21ls07:11:180
23150996315,7cyclictest0-21swapper/008:46:050
205202630,2sleep00-21swapper/005:51:130
2315099621,38cyclictest10991-21unixbench_singl07:56:200
2315099614,23cyclictest15130-21ls08:01:190
23150996126,10cyclictest101ktimersoftd/005:15:520
173192610,1sleep00-21swapper/008:42:400
2315199601,10cyclictest6992-21ssh08:31:031
2315099602,37cyclictest4256-21ssh09:46:030
23150995929,15cyclictest7750irq/56-dwc_otg04:40:520
2315199587,23cyclictest0-21swapper/106:01:051
23150995835,5cyclictest10629-21aten_rbpower_vo06:41:050
2315099582,38cyclictest0-21swapper/006:15:520
2315099581,29cyclictest28055-21grep04:41:160
23150995740,6cyclictest101ktimersoftd/009:56:020
23150995720,18cyclictest12897-21fschecks_time05:31:080
2315399568,13cyclictest0-21swapper/304:40:583
2315199562,7cyclictest7850irq/56-dwc_otg_07:31:041
23150995628,5cyclictest7750irq/56-dwc_otg07:35:590
23150995610,30cyclictest12374-21idleruntime-cro05:30:520
2315199557,29cyclictest0-21swapper/105:46:051
23150995536,5cyclictest7850irq/56-dwc_otg_07:41:060
23150995536,5cyclictest7850irq/56-dwc_otg_07:41:060
2315099553,23cyclictest0-21swapper/007:06:190
23150995531,11cyclictest101ktimersoftd/004:51:090
23150995530,8cyclictest7321-21apt09:10:520
23150995529,10cyclictest1584-21cron06:30:520
2315099551,34cyclictest1484-21kworker/0:208:28:280
2315099551,27cyclictest26422-21grep06:06:200
2315299543,11cyclictest0-21swapper/209:51:032
23150995448,4cyclictest101ktimersoftd/008:31:190
23150995432,14cyclictest101ktimersoftd/007:29:370
23150995424,8cyclictest20242-21aten_rbpower_vo09:26:120
2315199537,17cyclictest0-21swapper/105:56:041
2315199537,17cyclictest0-21swapper/105:56:041
23151995312,26cyclictest31822-21ssh07:06:051
2315099539,29cyclictest15078-21fschecks_count06:46:090
23150995331,6cyclictest7750irq/56-dwc_otg07:51:160
2315099531,35cyclictest8531-21tr09:51:060
2315399523,25cyclictest0-21swapper/305:01:033
23150995238,5cyclictest101ktimersoftd/004:56:170
2315099523,36cyclictest13-21rcuc/008:56:170
23150995223,14cyclictest7850irq/56-dwc_otg_08:21:110
166192520,2sleep30-21swapper/305:41:103
23150995124,12cyclictest10263-21ssh09:13:420
23150995118,19cyclictest101ktimersoftd/007:21:200
23150995116,24cyclictest0-21swapper/005:10:310
2315099511,47cyclictest101ktimersoftd/007:46:090
2315099511,27cyclictest25577-21systemd-journal07:20:520
23150995036,4cyclictest22508-21sh08:11:030
23150995029,9cyclictest101ktimersoftd/006:56:080
2315099501,28cyclictest29830-21sed04:46:190
2315099501,28cyclictest12958-21ssh09:16:200
2315099494,41cyclictest13-21rcuc/007:01:160
2315099494,41cyclictest13-21rcuc/007:01:160
23150994923,6cyclictest16877-21smartpower09:21:200
23150994923,3cyclictest0-21swapper/006:51:110
2315099492,27cyclictest0-21swapper/006:31:150
228222493,14sleep00-21swapper/004:30:070
2315199487,25cyclictest0-21swapper/105:51:051
2315099483,26cyclictest7850irq/56-dwc_otg_06:00:520
2315099483,26cyclictest7850irq/56-dwc_otg_06:00:520
23150994824,10cyclictest17777-21cron05:45:520
23150994822,13cyclictest101ktimersoftd/008:06:040
23150994821,4cyclictest0-21swapper/005:21:040
2315099481,26cyclictest0-21swapper/006:01:190
2315399472,8cyclictest0-21swapper/307:16:033
23153994717,6cyclictest61-21kswapd009:01:033
2315199477,28cyclictest0-21swapper/105:15:591
23150994730,9cyclictest0-21swapper/005:46:190
2315099471,32cyclictest0-21swapper/009:31:140
2315399467,25cyclictest0-21swapper/306:26:053
2315399462,9cyclictest27686-21ssh08:56:033
23152994622,4cyclictest15615-21fschecks_time08:41:102
23150994618,6cyclictest7850irq/56-dwc_otg_05:40:520
2315399456,22cyclictest32495-21ssh09:40:573
23153994512,9cyclictest7950irq/56-dwc_otg_07:46:043
2315299456,25cyclictest0-21swapper/209:06:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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