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2026-07-18 - 03:45

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 Jul 18, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122932830,4sleep30-21swapper/321:58:363
122932830,4sleep30-21swapper/321:58:363
15668996761,4cyclictest26600-21wc00:03:301
15668996761,4cyclictest26600-21wc00:03:301
15668996761,4cyclictest26600-21wc00:03:301
34832600,2sleep1281ktimers/120:08:351
41252590,2chrt4127-21ntpq20:08:431
41252590,2chrt4127-21ntpq20:08:431
121502550,2sleep30-21swapper/320:28:473
121502550,2sleep30-21swapper/320:28:473
299972500,7sleep130000-21sed21:18:381
299972500,7sleep130000-21sed21:18:381
299972500,7sleep130000-21sed21:18:381
81572470,3sleep30-21swapper/320:18:463
81572470,3sleep30-21swapper/320:18:463
81572470,3sleep30-21swapper/320:18:463
245772470,3sleep20-21swapper/221:03:392
245772470,3sleep20-21swapper/221:03:392
180722470,3sleep30-21swapper/323:38:423
186202460,2sleep20-21swapper/222:13:422
186202460,2sleep20-21swapper/222:13:422
186202460,2sleep20-21swapper/222:13:422
134942460,3sleep30-21swapper/321:58:483
134942460,3sleep30-21swapper/321:58:483
1566799444,36cyclictest26844-21cut00:03:380
1566799444,36cyclictest26844-21cut00:03:380
240242430,1sleep10-21swapper/121:03:341
240242430,1sleep10-21swapper/121:03:341
238082420,3sleep20-21swapper/221:03:232
238082420,3sleep20-21swapper/221:03:232
25132390,3sleep20-21swapper/220:03:452
25132390,3sleep20-21swapper/220:03:452
172412390,3sleep30-21swapper/320:43:423
172412390,3sleep30-21swapper/320:43:423
15667993829,7cyclictest25340-21kernelversion23:58:380
1566799371,27cyclictest27178-21if_wlan000:03:400
1566799371,27cyclictest27178-21if_wlan000:03:400
1566799371,27cyclictest27178-21if_wlan000:03:400
36802360,2sleep30-21swapper/320:08:373
36802360,2sleep30-21swapper/320:08:373
282922350,2sleep128293-21/usr/sbin/munin21:13:391
282922350,2sleep128293-21/usr/sbin/munin21:13:391
1567099352,26cyclictest28045-21chrt00:04:262
1567099352,26cyclictest28045-21chrt00:04:262
1567099352,26cyclictest28045-21chrt00:04:262
15668993530,3cyclictest28875-21sh22:43:231
15668993530,3cyclictest28875-21sh22:43:231
1566899351,27cyclictest27492-21/usr/sbin/munin00:03:471
1566899351,27cyclictest27492-21/usr/sbin/munin00:03:471
1566899351,27cyclictest27492-21/usr/sbin/munin00:03:471
15667993528,5cyclictest7054-21threads23:08:460
15667993528,5cyclictest7054-21threads23:08:460
15667993528,5cyclictest7054-21threads23:08:460
15667993526,7cyclictest2475-21netstat00:23:420
15667993526,7cyclictest2475-21netstat00:23:420
15668993429,3cyclictest0-21swapper/123:03:241
15668993429,3cyclictest0-21swapper/123:03:241
15668993429,3cyclictest0-21swapper/123:03:241
15668993321,3cyclictest181rcu_preempt19:50:241
15667993325,5cyclictest23237-21kernelversion19:33:390
15667993325,5cyclictest23237-21kernelversion19:33:390
3782320,3sleep10-21swapper/100:18:401
3782320,3sleep10-21swapper/100:18:401
15668993225,5cyclictest8453-21/usr/sbin/munin21:48:441
15668993225,5cyclictest8453-21/usr/sbin/munin21:48:441
15667993227,4cyclictest15661-21cyclictest19:38:390
15667993227,4cyclictest15661-21cyclictest19:38:390
15667993227,4cyclictest15661-21cyclictest19:38:390
15667993223,6cyclictest11500-21latency_hist23:23:240
15667993223,6cyclictest11500-21latency_hist23:23:240
15667993223,6cyclictest11500-21latency_hist23:23:240
277222310,2sleep127164-21/usr/sbin/munin22:38:381
266022310,5sleep30-21swapper/300:03:303
266022310,5sleep30-21swapper/300:03:303
266022310,5sleep30-21swapper/300:03:303
15668993126,3cyclictest0-21swapper/122:18:371
15668993123,6cyclictest90-1pr/ttyS020:23:451
15668993123,6cyclictest90-1pr/ttyS020:23:451
15668993122,7cyclictest14815-21fschecks_count20:38:361
15668993122,7cyclictest14815-21fschecks_count20:38:361
15667993125,5cyclictest1999-21if_wlan020:03:370
15667993125,5cyclictest1999-21if_wlan020:03:370
15667993125,4cyclictest0-21swapper/020:58:460
15667993125,4cyclictest0-21swapper/020:58:460
61852300,4sleep30-21swapper/320:13:433
61852300,4sleep30-21swapper/320:13:433
61852300,4sleep30-21swapper/320:13:433
15668993025,3cyclictest0-21swapper/123:43:241
15668993023,5cyclictest3824-21sort00:28:351
15668993023,5cyclictest17410-21cpuspeed23:38:351
15668993023,5cyclictest17410-21cpuspeed23:38:351
15668993023,5cyclictest17410-21cpuspeed23:38:351
15668993022,6cyclictest27546-21latency_hist21:13:251
15668993021,7cyclictest6609-21latency_hist21:43:321
15667993024,4cyclictest18221-21latency_hist20:48:240
15667993024,4cyclictest18221-21latency_hist20:48:240
15667993024,4cyclictest15661-21cyclictest21:43:460
15667993024,4cyclictest15661-21cyclictest21:43:460
15667993022,6cyclictest8632-21unixbench_singl00:38:470
15667993022,6cyclictest8632-21unixbench_singl00:38:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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