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2026-09-19 - 23:54

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 Sat Sep 19, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
739021140,2sleep07394-21needreboot10:04:410
739021140,2sleep07394-21needreboot10:04:410
79052830,3sleep00-21swapper/008:39:380
79052830,3sleep00-21swapper/008:39:380
193472770,1sleep00-21swapper/007:44:350
125442770,5sleep30-21swapper/311:44:423
125442770,5sleep30-21swapper/311:44:423
267272750,2chrt0-21swapper/009:29:390
176242690,2sleep017627-21cut09:04:430
176242690,2sleep017627-21cut09:04:430
279942650,2chrt27987-21gzip10:59:411
279942650,2chrt27987-21gzip10:59:411
10412620,2sleep00-21swapper/012:39:470
10412620,2sleep00-21swapper/012:39:470
171842590,3sleep30-21swapper/310:29:443
171842590,3sleep30-21swapper/310:29:443
242652570,10sleep0171ktimers/010:49:390
261742490,3chrt0-21swapper/309:29:343
141102490,3chrt0-21swapper/311:49:363
141102490,3chrt0-21swapper/311:49:363
220272470,3sleep08270-21cyclictest07:49:450
220272470,3sleep08270-21cyclictest07:49:450
3882460,5sleep20-21swapper/208:19:382
3882460,5sleep20-21swapper/208:19:382
232402460,2sleep20-21swapper/210:47:412
6032400,2sleep00-21swapper/011:14:360
6032400,2sleep00-21swapper/011:14:360
221702400,2sleep021154-21/usr/sbin/munin12:09:440
221702400,2sleep021154-21/usr/sbin/munin12:09:440
216432390,3sleep30-21swapper/310:44:273
216432390,3sleep30-21swapper/310:44:273
49502380,2sleep20-21swapper/209:59:362
49502380,2sleep20-21swapper/209:59:362
322852380,3sleep20-21swapper/212:39:282
322852380,3sleep20-21swapper/212:39:282
308092360,2sleep131000-21sed09:39:461
308092360,2sleep131000-21sed09:39:461
207122360,2sleep20-21swapper/210:39:442
207122360,2sleep20-21swapper/210:39:442
100292360,3sleep00-21swapper/008:44:450
68352350,4sleep30-21swapper/310:04:353
68352350,4sleep30-21swapper/310:04:353
231162350,3sleep20-21swapper/209:19:442
231162350,3sleep20-21swapper/209:19:442
73882340,3sleep07391-21unixbench_singl11:29:470
73882340,3sleep07391-21unixbench_singl11:29:470
308432340,2sleep030847-21gltestperf12:34:350
308432340,2sleep030847-21gltestperf12:34:350
165582340,2sleep016-21ksoftirqd/011:54:430
8271993326,5cyclictest550-21cron09:54:210
8271993326,5cyclictest550-21cron09:54:210
176812330,2sleep30-21swapper/311:59:373
176812330,2sleep30-21swapper/311:59:373
176812330,2sleep30-21swapper/311:59:373
130212330,2sleep30-21swapper/308:54:333
8272993226,4cyclictest12595-21proc_pri11:44:421
8272993226,4cyclictest12595-21proc_pri11:44:421
8272993225,5cyclictest14678-21systemd-journal10:19:211
8272993225,5cyclictest14678-21systemd-journal10:19:211
8271993227,4cyclictest572-21cups-browsed08:29:420
8271993227,4cyclictest572-21cups-browsed08:29:420
8271993225,5cyclictest24123-21timerwakeupswit12:14:450
8271993225,5cyclictest18419-21threads11:59:460
8271993225,5cyclictest18419-21threads11:59:460
8271993225,5cyclictest18419-21threads11:59:460
282412320,3sleep20-21swapper/208:09:222
8272993127,3cyclictest10344-21unixbench-2d08:44:471
8272993125,4cyclictest2714-21gltestperf11:19:361
8272993125,4cyclictest2714-21gltestperf11:19:361
8272993125,4cyclictest2714-21gltestperf11:19:361
8272993123,6cyclictest5334-21kernelversion09:59:391
8272993123,6cyclictest5334-21kernelversion09:59:391
8271993126,4cyclictest572-21cups-browsed12:19:430
8271993126,4cyclictest572-21cups-browsed12:19:430
8271993124,5cyclictest6099-21latency_hist11:29:280
8271993124,5cyclictest6099-21latency_hist11:29:280
85112300,3sleep30-21swapper/308:39:453
85112300,3sleep30-21swapper/308:39:453
8272993025,3cyclictest0-21swapper/112:14:341
8272993024,4cyclictest8374-21gltestperf11:34:381
8272993024,4cyclictest31998-21gltestperf09:44:351
8272993024,4cyclictest31998-21gltestperf09:44:351
8272993024,4cyclictest29542-21cron09:39:221
8272993024,4cyclictest22056-21gltestperf10:44:381
8272993023,5cyclictest13266-21gltestperf08:54:351
8271993025,3cyclictest4013-21cron11:24:220
8271993025,3cyclictest4013-21cron11:24:220
8271993025,3cyclictest4013-21cron11:24:220
8271993024,4cyclictest572-21cups-browsed10:24:420
8271993024,4cyclictest572-21cups-browsed08:54:420
8271993023,5cyclictest28192-21sshd12:26:390
8271993023,5cyclictest28192-21sshd12:26:390
8272992923,4cyclictest27047-21fschecks_time12:24:351
8272992923,4cyclictest27047-21fschecks_time12:24:351
8272992923,4cyclictest17931-21unixbench_singl09:04:451
8272992923,4cyclictest17931-21unixbench_singl09:04:451
8272992923,4cyclictest15863-21gltestperf11:54:351
8272992922,5cyclictest550-21cron12:44:221
8272992922,5cyclictest550-21cron12:44:221
8272992922,5cyclictest32649-21sshd11:13:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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