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2026-07-21 - 22:33

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 Tue Jul 21, 2026 12:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1566921030,3chrt0-21swapper/007:45:460
1566921030,3chrt0-21swapper/007:45:460
1566921030,3chrt0-21swapper/007:45:460
141532750,2chrt0-21swapper/007:43:330
141532750,2chrt0-21swapper/007:43:330
249802720,4chrt0-21swapper/311:03:433
249802720,4chrt0-21swapper/311:03:433
101912690,2sleep0171ktimers/010:23:440
101912690,2sleep0171ktimers/010:23:440
101912690,2sleep0171ktimers/010:23:440
249902630,2sleep024994-21sed12:28:500
249902630,2sleep024994-21sed12:28:500
169632620,2sleep016966-21latency_hist10:43:380
169632620,2sleep016966-21latency_hist10:43:380
327472600,3sleep30-21swapper/309:58:433
327472600,3sleep30-21swapper/309:58:433
92562560,3sleep30-21swapper/311:48:413
92562560,3sleep30-21swapper/311:48:413
226302530,2sleep30-21swapper/312:23:433
226302530,2sleep30-21swapper/312:23:433
132552490,3sleep30-21swapper/311:58:463
132552490,3sleep30-21swapper/311:58:463
132552490,3sleep30-21swapper/311:58:463
247192460,2sleep124723-21tail11:03:411
247192460,2sleep124723-21tail11:03:411
96052450,3sleep00-21swapper/011:48:460
96052450,3sleep00-21swapper/011:48:460
82432440,3chrt0-21swapper/011:43:520
82432440,3chrt0-21swapper/011:43:520
82432440,3chrt0-21swapper/011:43:520
64302430,4sleep00-21swapper/010:13:470
64302430,4sleep00-21swapper/010:13:470
64302430,4sleep00-21swapper/010:13:470
271332430,1sleep027126-21idleruntime-cro08:18:260
271332430,1sleep027126-21idleruntime-cro08:18:260
4192420,3sleep30-21swapper/311:23:493
4192420,3sleep30-21swapper/311:23:493
134392420,3chrt0-21swapper/310:33:403
207442410,1sleep020747-21tail12:18:460
207442410,1sleep020747-21tail12:18:460
40602390,2sleep10-21swapper/111:33:481
40602390,2sleep10-21swapper/111:33:481
3148993911,25cyclictest9353-21ntp_states07:28:481
3148993911,25cyclictest9353-21ntp_states07:28:481
276752390,3chrt0-21swapper/012:38:390
314899387,6cyclictest20557-21ntp_kernel_pll_07:58:461
314899382,9cyclictest5664-21/usr/sbin/munin10:13:481
314899382,9cyclictest5664-21/usr/sbin/munin10:13:481
314899382,9cyclictest5664-21/usr/sbin/munin10:13:481
314899381,9cyclictest6804-21wc08:48:441
314899381,9cyclictest6804-21wc08:48:441
314899381,9cyclictest6804-21wc08:48:441
314899381,11cyclictest500-21/usr/sbin/munin08:33:411
314899381,11cyclictest500-21/usr/sbin/munin08:33:411
314899381,11cyclictest13109-21latency11:58:441
314899381,11cyclictest13109-21latency11:58:441
314899381,11cyclictest13109-21latency11:58:441
314899381,10cyclictest311-21gltestperf09:58:431
314899381,10cyclictest311-21gltestperf09:58:431
314899381,10cyclictest29174-21awk09:48:421
314899381,10cyclictest29174-21awk09:48:421
314899381,10cyclictest29174-21awk09:48:421
3148993716,19cyclictest0-21swapper/112:03:521
3148993716,19cyclictest0-21swapper/112:03:521
3148993716,19cyclictest0-21swapper/112:03:521
314899371,12cyclictest14977-21ntp_offset07:43:461
314899371,12cyclictest14977-21ntp_offset07:43:461
314899371,12cyclictest14977-21ntp_offset07:43:461
314899371,11cyclictest19103-21/usr/sbin/munin10:48:391
314899371,11cyclictest19103-21/usr/sbin/munin10:48:391
314899371,11cyclictest19103-21/usr/sbin/munin10:48:391
314899371,11cyclictest15348-21grep10:38:401
314899371,11cyclictest15348-21grep10:38:401
3148993629,5cyclictest18239-21ntp_kernel_pll_09:18:481
3148993629,5cyclictest18239-21ntp_kernel_pll_09:18:481
3148993629,5cyclictest16757-21needreboot07:48:451
3148993629,5cyclictest16757-21needreboot07:48:451
3148993628,6cyclictest22987-21threads12:23:481
3148993628,6cyclictest22987-21threads12:23:481
314899361,9cyclictest2325-21ls11:28:521
314899361,9cyclictest2325-21ls11:28:521
3148993614,20cyclictest0-21swapper/108:43:461
3148993614,20cyclictest0-21swapper/108:43:461
3148993614,20cyclictest0-21swapper/108:43:461
314899361,13cyclictest18712-21ntp_states07:53:441
314899361,13cyclictest18712-21ntp_states07:53:441
314899361,12cyclictest9588-21uniq10:23:381
314899361,12cyclictest9588-21uniq10:23:381
314899361,12cyclictest9588-21uniq10:23:381
314899361,11cyclictest5279-21fschecks_count11:38:401
314899361,11cyclictest5279-21fschecks_count11:38:401
314899361,11cyclictest4587-21ps10:08:471
314899361,11cyclictest4587-21ps10:08:471
314899361,11cyclictest15144-21cat10:38:381
314899361,11cyclictest13995-21latency_hist07:43:361
314899361,11cyclictest13995-21latency_hist07:43:361
314899361,10cyclictest6717-21/usr/sbin/munin07:23:491
314899361,10cyclictest31776-21needreboot08:28:461
314899361,10cyclictest31776-21needreboot08:28:461
314899361,10cyclictest29330-21grep11:13:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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