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2025-12-20 - 07:03

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 Dec 20, 2025 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2754521890,14sleep127548-21latency_hist19:10:051
2754521890,14sleep127548-21latency_hist19:10:051
27684999520,39cyclictest0-21swapper/019:30:180
2768499877,45cyclictest0-21swapper/021:30:190
2768499846,41cyclictest0-21swapper/022:45:180
27684998055,17cyclictest0-21swapper/022:50:110
27684997842,19cyclictest101ktimersoftd/019:10:070
54982770,2sleep10-21swapper/121:05:331
2768499775,47cyclictest28382-21runrttasks23:40:170
2768499757,25cyclictest0-21swapper/021:25:110
2768499757,25cyclictest0-21swapper/021:25:110
2768499756,23cyclictest0-21swapper/022:05:170
2768699711,46cyclictest3360-21df_inode00:00:232
2768799702,9cyclictest27688-21taskset19:10:073
2768699691,46cyclictest20796-21fschecks_count20:20:232
2768699681,45cyclictest6266-21apt22:40:052
2768499686,59cyclictest13-21rcuc/000:30:190
2768499673,29cyclictest0-21swapper/022:10:170
2768699661,48cyclictest29676-21apt20:45:182
2768699661,43cyclictest25431-21sed22:00:302
2768699651,49cyclictest29187-21chrt20:42:122
2768699651,43cyclictest32256-21ls22:20:222
2768799642,5cyclictest7850irq/56-dwc_otg_22:20:303
2768699641,46cyclictest1336-21apt-get23:55:162
2768699641,44cyclictest1056-21chrt23:54:512
2768699641,42cyclictest27926-21/usr/sbin/munin19:10:192
2768799631,13cyclictest7950irq/56-dwc_otg_23:30:323
2768699634,45cyclictest7850irq/56-dwc_otg_21:35:202
2768699631,40cyclictest29498-21/usr/sbin/munin19:15:342
2768599634,14cyclictest0-21swapper/121:50:161
2768599634,14cyclictest0-21swapper/121:50:161
2768499632,38cyclictest23986-21kworker/0:022:00:170
2768499631,14cyclictest0-21swapper/000:35:190
2768499631,14cyclictest0-21swapper/000:35:190
2768499628,3cyclictest0-21swapper/019:15:170
2768499626,39cyclictest0-21swapper/023:15:210
2768499626,21cyclictest0-21swapper/020:25:110
2768799615,4cyclictest7950irq/56-dwc_otg_20:45:273
2768499613,36cyclictest0-21swapper/020:21:140
2768799605,4cyclictest7950irq/56-dwc_otg_21:10:323
2768799605,19cyclictest7950irq/56-dwc_otg_23:20:183
2768799602,14cyclictest0-21swapper/300:25:323
2768799601,5cyclictest18481-21ls20:15:043
2768699601,42cyclictest6709-21df22:40:212
2768499603,32cyclictest14407-21unixbench_multi20:00:330
2768799595,4cyclictest17508-21cut23:10:203
2768799592,10cyclictest19135-21iwlist20:15:253
27687995916,4cyclictest7900-21/usr/sbin/munin19:45:273
27687995916,4cyclictest7900-21/usr/sbin/munin19:45:273
2768699591,45cyclictest25140-21/usr/sbin/munin23:30:242
2768699591,42cyclictest25496-21sshd20:31:152
2768699591,39cyclictest406-21sshd20:53:142
2768499591,41cyclictest7895-21grep00:10:330
27684995912,26cyclictest0-21swapper/022:20:240
2768699581,46cyclictest3600-21ntp_states22:30:292
2768699581,42cyclictest16186-21memory23:05:252
27684995823,19cyclictest0-21swapper/021:00:170
27684995818,8cyclictest0-21swapper/022:35:190
27684995812,11cyclictest0-21swapper/023:55:160
2768799573,8cyclictest7950irq/56-dwc_otg_21:55:203
2768699571,40cyclictest9486-21users22:45:332
2768499578,10cyclictest0-21swapper/021:55:150
2768499573,28cyclictest0-21swapper/019:25:160
2768499571,34cyclictest27926-21aten_rbpower_en20:40:170
2768499571,30cyclictest14107-21cut23:00:230
2768799561,7cyclictest21346-21/usr/sbin/munin20:20:313
27687995615,5cyclictest11428-21latency_hist21:25:053
2768699563,40cyclictest7950irq/56-dwc_otg_00:09:012
2768699561,51cyclictest1320-21ls19:25:262
2768699561,35cyclictest7950irq/56-dwc_otg_19:40:052
27684995629,5cyclictest12342-21fschecks_time22:55:240
2768499562,27cyclictest0-21swapper/000:15:160
2768499561,34cyclictest1125-21runrttasks21:15:230
2768499561,33cyclictest23187-21fschecks_count23:25:230
2768799553,6cyclictest3841-21ntp_states00:00:303
2768799551,6cyclictest0-21swapper/320:45:053
2768799551,5cyclictest810-21/usr/sbin/munin20:55:273
2768699551,41cyclictest6468-21df_inode21:10:212
2768499553,32cyclictest0-21swapper/019:50:150
2768499553,32cyclictest0-21swapper/019:50:150
27684995514,7cyclictest6054-21unixbench_multi00:05:330
27684995513,6cyclictest0-21swapper/023:30:160
2768799546,4cyclictest7950irq/56-dwc_otg_21:45:333
2768799541,44cyclictest0-21swapper/323:38:293
2768799541,3cyclictest7750irq/56-dwc_otg22:40:303
2768699543,39cyclictest7950irq/56-dwc_otg_21:00:192
2768699541,49cyclictest30186-21apt-get23:45:172
2768699541,49cyclictest30186-21apt-get23:45:172
2768699541,49cyclictest12177-21apt-get00:25:162
2768699541,43cyclictest27660-21sed23:35:332
2768699541,39cyclictest7950irq/56-dwc_otg_20:59:162
2768699541,39cyclictest7850irq/56-dwc_otg_20:15:042
27684995435,6cyclictest7950irq/56-dwc_otg_21:05:200
2768499542,29cyclictest16632-21grep21:35:340
2768499541,33cyclictest4701-21apt00:05:040
2768499541,32cyclictest6569-21aten_rbpower_en22:40:200
2768799538,6cyclictest0-21swapper/322:00:173
2768799532,3cyclictest0-21swapper/320:06:113
2768799531,4cyclictest7850irq/56-dwc_otg_23:55:243
2768699531,48cyclictest5486-21ls21:05:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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