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2026-05-11 - 05:41

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 Mon May 11, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
104642870,2sleep30-21swapper/320:57:373
104642870,2sleep30-21swapper/320:57:373
156392820,4sleep10-21swapper/100:02:471
156392820,4sleep10-21swapper/100:02:471
286612780,4sleep128662-21tail23:12:381
286612780,4sleep128662-21tail23:12:381
222672750,3sleep30-21swapper/300:22:353
222672750,3sleep30-21swapper/300:22:353
264122730,2sleep126410-21ps00:32:421
264122730,2sleep126410-21ps00:32:421
183682710,4sleep018371-21tr00:12:350
183682710,4sleep018371-21tr00:12:350
285622700,2sleep10-21swapper/100:37:451
285622700,2sleep10-21swapper/100:37:451
308822680,2chrt30752-21latency_hist20:27:270
308822680,2chrt30752-21latency_hist20:27:270
125062680,1sleep10-21swapper/123:57:331
125062680,1sleep10-21swapper/123:57:331
125062680,1sleep10-21swapper/123:57:331
303812580,2chrt0-21swapper/223:17:382
303812580,2chrt0-21swapper/223:17:382
110772560,2sleep30-21swapper/319:32:393
110772560,2sleep30-21swapper/319:32:393
112392540,3sleep20-21swapper/223:52:392
112392540,3sleep20-21swapper/223:52:392
39042530,3sleep30-21swapper/323:32:423
39042530,3sleep30-21swapper/323:32:423
165632520,3sleep30-21swapper/322:42:213
165632520,3sleep30-21swapper/322:42:213
159262520,11sleep1271rcuc/121:12:351
222122500,2sleep10-21swapper/122:57:231
222122500,2sleep10-21swapper/122:57:231
163582500,3sleep30-21swapper/319:47:353
163582500,3sleep30-21swapper/319:47:353
245932490,2sleep30-21swapper/320:07:453
245932490,2sleep30-21swapper/320:07:453
142152480,4sleep30-21swapper/300:02:253
142152480,4sleep30-21swapper/300:02:253
142152480,4sleep30-21swapper/300:02:253
3028994633,5cyclictest0-21swapper/000:02:260
3028994633,5cyclictest0-21swapper/000:02:260
3028994633,5cyclictest0-21swapper/000:02:260
190152460,3chrt0-21swapper/222:47:352
190152460,3chrt0-21swapper/222:47:352
222272450,4chrt0-21swapper/320:02:383
222272450,4chrt0-21swapper/320:02:383
222272450,4chrt0-21swapper/320:02:383
98892420,3chrt0-21swapper/222:22:392
98892420,3chrt0-21swapper/222:22:392
200282420,2sleep30-21swapper/319:57:363
303099381,25cyclictest14254-21chrt00:02:282
303099381,25cyclictest14254-21chrt00:02:282
303099381,25cyclictest14254-21chrt00:02:282
302899382,26cyclictest14606-21fschecks_time00:02:350
302899382,26cyclictest14606-21fschecks_time00:02:350
69952370,3chrt0-21swapper/320:47:443
69952370,3chrt0-21swapper/320:47:443
3028993528,5cyclictest3696-21missed_timers23:32:380
3028993528,5cyclictest3696-21missed_timers23:32:380
315572340,2sleep20-21swapper/220:27:372
315572340,2sleep20-21swapper/220:27:372
3028993429,3cyclictest25137-21cut21:37:360
3028993429,3cyclictest25137-21cut21:37:360
3028993428,4cyclictest26165-21processes20:12:410
3028993428,4cyclictest26165-21processes20:12:410
115802340,1sleep10-21swapper/121:02:261
115802340,1sleep10-21swapper/121:02:261
3029993327,4cyclictest617-21lldpd20:37:431
3029993327,4cyclictest617-21lldpd20:37:431
3029993325,6cyclictest13032-21cpu22:32:341
3028993327,4cyclictest1648-21ntpd19:37:410
3028993325,6cyclictest29048-21kernelversion21:47:370
3028993325,6cyclictest29048-21kernelversion21:47:370
3028993325,6cyclictest29048-21kernelversion21:47:370
3029993225,5cyclictest32498-21cut21:57:351
3029993225,5cyclictest32498-21cut21:57:351
3029993223,7cyclictest306-21latency_hist20:32:271
3029993223,7cyclictest306-21latency_hist20:32:271
3028993228,3cyclictest28657-21gzip23:12:380
3028993228,3cyclictest28657-21gzip23:12:380
140662320,3sleep30-21swapper/321:07:383
140662320,3sleep30-21swapper/321:07:383
8412310,2sleep00-21swapper/021:57:440
8412310,2sleep00-21swapper/021:57:440
304992310,1sleep130519-21cat21:52:361
304992310,1sleep130519-21cat21:52:361
304992310,1sleep130519-21cat21:52:361
3029993126,4cyclictest2115-21cut22:02:361
3029993126,4cyclictest2115-21cut22:02:361
3029993124,5cyclictest22130-21kernelversion20:02:371
3029993124,5cyclictest22130-21kernelversion20:02:371
3029993124,5cyclictest22130-21kernelversion20:02:371
3029993120,9cyclictest13371-21latency_hist21:07:231
3029993120,9cyclictest13371-21latency_hist21:07:231
3029993120,9cyclictest13371-21latency_hist21:07:231
3028993126,3cyclictest17092-21latency_hist21:17:220
3028993123,6cyclictest5698-21sh23:37:430
3028993123,6cyclictest5698-21sh23:37:430
3028993123,6cyclictest28379-21unixbench-2d20:17:450
3028993123,6cyclictest28379-21unixbench-2d20:17:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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