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2026-08-08 - 04:52

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 Aug 08, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1107526220,6sleep211076-21/usr/sbin/munin19:05:132
2937521570,8sleep21286099cyclictest22:35:082
12858991534,123cyclictest10832-21grep00:10:190
12858991473,29cyclictest0-21swapper/023:20:240
12858991355,99cyclictest0-21swapper/022:05:300
128609913413,86cyclictest1703-21irqstats22:40:202
12858991313,46cyclictest25397-21tr21:50:240
12858991235,86cyclictest0-21swapper/023:05:180
128589912263,43cyclictest101ktimersoftd/022:40:210
12858991203,34cyclictest9337-21ssh22:10:220
128589911825,73cyclictest31767-21ssh00:35:230
12860991167,23cyclictest21016-21sh21:45:222
12860991152,9cyclictest22440-21ssh23:05:252
128599911513,20cyclictest26665-21ntp_states23:10:241
12859991133,10cyclictest19576-21ssh00:20:271
12858991123,10cyclictest10551-21memory23:30:220
12858991122,44cyclictest8654-21irqstats21:30:200
12858991115,77cyclictest0-21swapper/023:50:180
12860991102,9cyclictest7074-21unixbench_singl23:25:312
12860991063,13cyclictest23679-21ntp_states00:25:242
128589910616,69cyclictest9-21ksoftirqd/000:20:240
128589910613,75cyclictest0-21swapper/023:45:240
12860991053,11cyclictest25276-21memory21:50:222
12860991043,26cyclictest0-21swapper/222:15:222
12860991003,11cyclictest1182-21runrttasks21:20:302
128589910021,62cyclictest23732-21proc_pri00:25:260
12859999711,11cyclictest20967-21ssh21:45:211
1286099953,11cyclictest9343-21memory22:10:222
12859999513,10cyclictest11083-21date23:30:311
12860999414,21cyclictest19505-21ssh00:20:252
1285899943,17cyclictest14424-21/usr/sbin/munin22:55:260
1286199934,61cyclictest140-21systemd-journal23:30:293
1286099933,9cyclictest0-21swapper/200:10:182
1286099933,26cyclictest0-21swapper/223:10:242
1286099909,9cyclictest7750irq/56-dwc_otg23:30:242
12859999012,26cyclictest1824-21memory22:40:231
12858998933,7cyclictest0-21swapper/022:20:190
1286099873,13cyclictest7676-21ssh00:05:302
1285899874,11cyclictest19401-21unixbench_multi23:40:310
12861998621,23cyclictest0-21swapper/322:40:083
1285899858,11cyclictest20896-21fschecks_time21:45:200
1285899853,54cyclictest0-21swapper/023:00:250
1285899853,10cyclictest0-21swapper/022:15:240
12858998511,57cyclictest0-21swapper/019:45:300
1285899833,10cyclictest6596-21ntp_states23:25:240
1285899832,17cyclictest7850irq/56-dwc_otg_22:35:070
12861998213,48cyclictest0-21swapper/323:05:233
12859998220,17cyclictest5842-21grep22:05:301
1285899823,7cyclictest0-21swapper/021:20:290
1286199813,43cyclictest13398-21ls22:15:223
1286099807,10cyclictest14502-21ssh22:55:282
12861997918,26cyclictest26660-21ssh23:10:233
1285999797,52cyclictest0-21swapper/123:50:231
1285999793,46cyclictest0-21swapper/122:20:211
12860997819,27cyclictest17336-21cut22:20:212
1285999783,44cyclictest0-21swapper/100:10:251
12858997826,22cyclictest13-21rcuc/022:00:120
1285899774,50cyclictest0-21swapper/023:15:290
1286199763,21cyclictest5911-21ssh22:05:313
1285999769,8cyclictest0-21swapper/121:50:231
12861997522,26cyclictest7750irq/56-dwc_otg23:00:253
12861997518,27cyclictest1101-21sed21:20:303
12861997513,37cyclictest29000-21apt-get22:35:083
1285999753,10cyclictest0-21swapper/123:40:291
1285899753,14cyclictest0-21swapper/000:05:290
275182740,2sleep30-21swapper/300:30:213
1285999746,15cyclictest22823-21irqstats23:45:241
12859997411,11cyclictest8727-21ssh21:30:221
12859997410,11cyclictest31208-21unixbench-2d23:15:291
1285899743,10cyclictest26669-21ssh23:10:240
116132740,3sleep10-21swapper/122:52:021
15812730,3sleep229-21rcuc/223:20:022
1286099739,35cyclictest2423-21ssh23:20:242
1286099733,12cyclictest8654-21irqstats21:30:202
12860997313,28cyclictest0-21swapper/222:05:302
1285999733,41cyclictest0-21swapper/123:25:231
1286199717,32cyclictest23689-21ssh00:25:253
1286199715,41cyclictest7950irq/56-dwc_otg_23:25:293
12861997012,38cyclictest25277-21ssh21:50:223
1285999703,37cyclictest0-21swapper/122:10:231
12859997021,15cyclictest1157-21grep21:20:301
1286199693,22cyclictest0-21swapper/323:20:223
12858996938,3cyclictest0-21swapper/000:30:130
12861996821,24cyclictest17331-21fschecks_time22:20:213
12860996811,28cyclictest19293-21ssh23:40:292
1285999688,11cyclictest7671-21users00:05:291
12858996824,26cyclictest14386-21fschecks_time23:35:180
12858996824,26cyclictest14386-21fschecks_time23:35:180
1285899681,54cyclictest32074-21head20:00:270
1285899672,46cyclictest0-21swapper/019:30:180
12858996711,41cyclictest23327-21grep21:05:300
1286199666,45cyclictest0-21swapper/322:55:293
1286199664,39cyclictest0-21swapper/323:45:253
1285999669,11cyclictest0-21swapper/123:20:231
12859996615,12cyclictest14377-21ssh22:55:241
1286199652,38cyclictest27054-21ls23:50:233
12860996521,22cyclictest26994-21cut23:50:222
12860996511,28cyclictest7750irq/56-dwc_otg23:45:252
1285999653,36cyclictest23749-21ps00:25:261
12859996512,28cyclictest22438-21ssh23:05:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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