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2026-07-02 - 09:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 rack4slot1s.osadl.org (updated Thu Jul 02, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
572921220,4sleep20-21swapper/221:28:232
572921220,4sleep20-21swapper/221:28:232
786021170,3sleep20-21swapper/220:08:192
786021170,3sleep20-21swapper/220:08:192
1972621010,3sleep20-21swapper/223:33:172
1972621010,3sleep20-21swapper/223:33:172
255112990,3chrt0-21swapper/222:20:212
255112990,3chrt0-21swapper/222:20:212
202002980,3sleep30-21swapper/320:38:313
202002980,3sleep30-21swapper/320:38:313
202002980,3sleep30-21swapper/320:38:313
154042850,2sleep30-21swapper/323:18:313
154042850,2sleep30-21swapper/323:18:313
154042850,2sleep30-21swapper/323:18:313
36552820,3chrt0-21swapper/121:23:201
36552820,3chrt0-21swapper/121:23:201
36552820,3chrt0-21swapper/121:23:201
273412700,2chrt27340-21tune2fs19:33:211
150642700,2chrt15066-21awk23:18:291
150642700,2chrt15066-21awk23:18:291
150642700,2chrt15066-21awk23:18:291
77722690,2chrt0-21swapper/000:28:110
77722690,2chrt0-21swapper/000:28:110
77722690,2chrt0-21swapper/000:28:110
322962690,3chrt0-21swapper/100:03:441
322962690,3chrt0-21swapper/100:03:441
322962690,3chrt0-21swapper/100:03:441
280512690,3chrt0-21swapper/322:28:223
280512690,3chrt0-21swapper/322:28:223
272162680,2chrt27219-21unixbench_singl22:23:330
272162680,2chrt27219-21unixbench_singl22:23:330
272162680,2chrt27219-21unixbench_singl22:23:330
257742670,2sleep125731-21latency_hist22:23:091
257742670,2sleep125731-21latency_hist22:23:091
214002650,1chrt0-21swapper/120:43:241
214002650,1chrt0-21swapper/120:43:241
214002650,1chrt0-21swapper/120:43:241
181932620,3chrt0-21swapper/120:33:311
181932620,3chrt0-21swapper/120:33:311
29692600,3chrt0-21swapper/322:48:203
29692600,3chrt0-21swapper/322:48:203
255332570,3chrt0-21swapper/223:48:212
255332570,3chrt0-21swapper/223:48:212
71342550,8chrt281ktimers/122:58:231
71342550,8chrt281ktimers/122:58:231
71342550,8chrt281ktimers/122:58:231
65782550,3sleep30-21swapper/320:03:263
65782550,3sleep30-21swapper/320:03:263
65782550,3sleep30-21swapper/320:03:263
65782550,3sleep30-21swapper/320:03:263
322732550,4chrt0-21swapper/322:38:273
322732550,4chrt0-21swapper/322:38:273
311262540,3sleep10-21swapper/119:43:221
311262540,3sleep10-21swapper/119:43:221
311262540,3sleep10-21swapper/119:43:221
280492500,2chrt0-21swapper/323:53:283
280492500,2chrt0-21swapper/323:53:283
52962490,1sleep05298-21date21:28:170
52962490,1sleep05298-21date21:28:170
247502490,3sleep30-21swapper/322:18:253
247502490,3sleep30-21swapper/322:18:253
300372480,2sleep10-21swapper/119:38:321
259472480,3sleep30-21swapper/320:53:433
259472480,3sleep30-21swapper/320:53:433
165382470,2sleep20-21swapper/221:58:182
165382470,2sleep20-21swapper/221:58:182
165382470,2sleep20-21swapper/221:58:182
120742470,4sleep20-21swapper/221:43:312
120742470,4sleep20-21swapper/221:43:312
120742470,4sleep20-21swapper/221:43:312
19905994626,18cyclictest772-21latency_hist22:43:090
19905994626,18cyclictest772-21latency_hist22:43:090
19905994419,23cyclictest13208-21head21:48:230
19905994419,23cyclictest13208-21head21:48:230
308852430,4chrt30816-40mandb00:03:151
308852430,4chrt30816-40mandb00:03:151
308852430,4chrt30816-40mandb00:03:151
244672420,2sleep024569-21irqstats22:18:230
244672420,2sleep024569-21irqstats22:18:230
19905994221,19cyclictest0-21swapper/000:23:090
19905994221,19cyclictest0-21swapper/000:23:090
19905994221,19cyclictest0-21swapper/000:23:090
19905994214,26cyclictest19116-21missed_timers22:03:240
19905994214,26cyclictest19116-21missed_timers22:03:240
65732410,3sleep30-21swapper/321:28:323
65732410,3sleep30-21swapper/321:28:323
297572410,2sleep30-21swapper/319:38:303
124482410,2sleep012493-21proc_pri00:38:290
124482410,2sleep012493-21proc_pri00:38:290
103382410,3chrt0-21swapper/220:13:262
103382410,3chrt0-21swapper/220:13:262
38202400,2sleep10-21swapper/122:48:301
38202400,2sleep10-21swapper/122:48:301
38202400,2sleep10-21swapper/122:48:301
314352400,3sleep20-21swapper/222:38:142
314352400,3sleep20-21swapper/222:38:142
19905994013,25cyclictest0-21swapper/020:53:240
19905994013,25cyclictest0-21swapper/020:53:240
1990599391,7cyclictest11615-21latency_hist00:38:160
1990599391,7cyclictest11615-21latency_hist00:38:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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