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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 Fri Jan 23, 2026 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307592900,4sleep330762-21unixbench_singl23:55:513
23166998825,28cyclictest0-21swapper/021:30:370
180512750,2sleep00-21swapper/023:20:510
34322730,6sleep12316799cyclictest00:10:471
124932720,2sleep10-21swapper/123:05:501
23166996820,39cyclictest0-21swapper/019:15:310
2316699647,45cyclictest0-21swapper/021:25:290
23166996223,30cyclictest0-21swapper/000:25:340
23166996223,30cyclictest0-21swapper/000:25:340
2316699621,28cyclictest0-21swapper/020:10:360
2316699606,7cyclictest17276-21unixbench_multi20:20:530
23166996015,11cyclictest0-21swapper/021:45:350
2316699588,7cyclictest0-21swapper/022:40:340
23166995832,8cyclictest7850irq/56-dwc_otg_00:10:230
2316699581,27cyclictest18986-21grep23:25:400
2316699571,7cyclictest3303-21latency_hist19:45:230
23166995636,10cyclictest101ktimersoftd/023:35:420
2316699562,6cyclictest16202-21grep23:15:510
2316699562,42cyclictest0-21swapper/022:20:340
2316699555,41cyclictest0-21swapper/000:20:390
2316699554,11cyclictest0-21swapper/020:15:360
2316699553,3cyclictest0-21swapper/022:15:340
2316699553,3cyclictest0-21swapper/022:15:340
23166995530,6cyclictest7950irq/56-dwc_otg_19:55:370
23166995522,8cyclictest1125-21runrttasks21:55:510
2316699551,8cyclictest6140-21aten_rbpower_po22:50:370
23166995517,24cyclictest5243-21grep00:15:480
23166995515,23cyclictest19865-21aten_rbpower_po20:30:370
23166995428,5cyclictest7949-21aten_rbpower_po22:55:360
2316699542,28cyclictest23310-21latency_hist20:40:240
2316699541,7cyclictest28896-21unixbench_multi23:50:500
2316699541,31cyclictest32316-21latency_hist21:05:230
2316699534,19cyclictest0-21swapper/020:45:350
2316699534,19cyclictest0-21swapper/020:45:350
23166995328,3cyclictest0-21swapper/022:05:530
2316699532,3cyclictest0-21swapper/021:15:470
2316699532,29cyclictest0-21swapper/023:10:230
2316699532,28cyclictest27787-21switchtime19:20:490
2316699531,9cyclictest21308-21unixbench_singl22:00:520
2316699531,6cyclictest11040-21grep00:30:550
2316699531,5cyclictest4555-21fschecks_time22:45:410
2316699523,29cyclictest0-21swapper/021:55:230
2316699521,8cyclictest2974-21head21:10:510
2316699516,25cyclictest0-21swapper/022:10:490
2316699512,30cyclictest5897-21uniq21:20:440
2316699511,28cyclictest31490-21aten_rbpower_po00:00:380
2316999502,8cyclictest7950irq/56-dwc_otg_22:39:343
2316699502,6cyclictest11411-21ntp_kernel_err20:05:460
23166995020,15cyclictest11730-21/usr/sbin/munin00:35:480
2316699501,5cyclictest30476-21taskset19:30:230
2316699501,30cyclictest30345-21ps23:55:480
2316699501,28cyclictest20811-21fschecks_count23:30:380
2316999492,7cyclictest7950irq/56-dwc_otg_22:05:363
2316699497,28cyclictest10795-21unixbench_multi23:00:530
2316699493,9cyclictest0-21swapper/022:30:430
2316699491,26cyclictest0-21swapper/020:50:410
2316699491,10cyclictest0-21swapper/021:00:230
2316899483,7cyclictest7950irq/56-dwc_otg_23:45:342
2316699481,5cyclictest25720-21cron23:45:220
2316699481,28cyclictest17966-21/usr/sbin/munin20:25:480
2316999477,26cyclictest0-21swapper/300:00:383
2316999477,25cyclictest0-21swapper/322:20:283
2316999472,32cyclictest0-21swapper/320:42:133
2316699479,25cyclictest0-21swapper/022:35:330
2316699472,26cyclictest23762-21grep19:10:430
2316999467,25cyclictest0-21swapper/321:10:363
2316999467,24cyclictest0-21swapper/321:35:363
2316899467,25cyclictest0-21swapper/219:45:362
2316899467,24cyclictest0-21swapper/223:10:352
2316699461,9cyclictest30089-21ntpq22:25:450
23166994617,20cyclictest9-21ksoftirqd/019:35:340
228332462,36sleep00-21swapper/019:09:340
2316999457,24cyclictest0-21swapper/323:40:353
2316999451,10cyclictest2633-21ls22:40:363
2316799457,23cyclictest0-21swapper/123:40:351
2316899442,7cyclictest7950irq/56-dwc_otg_21:00:362
23168994412,10cyclictest7850irq/56-dwc_otg_21:45:352
2316699442,24cyclictest0-21swapper/021:44:210
23166994421,8cyclictest11084-21tr21:35:340
2316699441,25cyclictest0-21swapper/020:00:250
2316699441,25cyclictest0-21swapper/020:00:250
23166994412,16cyclictest1125-21runrttasks21:06:260
2316699441,15cyclictest0-21swapper/000:10:310
2316899431,14cyclictest25459-21cut20:45:402
2316899431,14cyclictest25459-21cut20:45:402
2316799435,18cyclictest0-21swapper/123:55:361
23167994323,5cyclictest24767-21latency_hist19:15:241
23166994318,13cyclictest0-21swapper/019:50:470
2316699431,23cyclictest23891-21kernelversion20:40:440
2316799427,26cyclictest0-21swapper/121:10:361
2316799427,23cyclictest0-21swapper/122:20:281
2316799427,23cyclictest0-21swapper/119:15:291
23167994219,5cyclictest10981-21fschecks_count20:05:401
23169994114,15cyclictest7850irq/56-dwc_otg_19:20:353
2316899417,24cyclictest0-21swapper/220:40:382
23167994115,4cyclictest28598-21/usr/sbin/munin23:50:481
2316699411,6cyclictest4145-21ls19:45:440
2316699411,30cyclictest0-21swapper/023:49:130
308182400,9sleep123-21ksoftirqd/119:30:401
2316999407,23cyclictest0-21swapper/320:05:373
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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