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2025-11-03 - 11:58

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 Nov 03, 2025 00:44:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1915221000,3sleep20-21swapper/221:08:362
1915221000,3sleep20-21swapper/221:08:362
149942820,3chrt0-21swapper/319:33:223
60772780,2chrt6076-21ntpq21:58:401
60772780,2chrt6076-21ntpq21:58:401
7561997057,11cyclictest663-21runrttasks21:48:321
7561997057,11cyclictest663-21runrttasks21:48:321
280742560,3chrt0-21swapper/300:23:333
280742560,3chrt0-21swapper/300:23:333
162172550,3sleep30-21swapper/323:53:193
162172550,3sleep30-21swapper/323:53:193
124192550,3chrt0-21swapper/223:43:202
756199536,9cyclictest181rcu_preempt23:03:311
756199536,9cyclictest181rcu_preempt23:03:311
168812520,2sleep20-21swapper/222:28:362
168812520,2sleep20-21swapper/222:28:362
168812520,2sleep20-21swapper/222:28:362
756199516,12cyclictest181rcu_preempt20:43:311
756199516,12cyclictest181rcu_preempt20:43:311
19782500,2sleep30-21swapper/300:38:453
19782500,2sleep30-21swapper/300:38:453
7561994928,17cyclictest281ktimers/100:38:341
7561994928,17cyclictest281ktimers/100:38:341
60522470,3sleep30-21swapper/320:33:363
60522470,3sleep30-21swapper/320:33:363
756399461,30cyclictest22345-21chrt22:43:323
756399461,30cyclictest22345-21chrt22:43:323
59952460,2chrt0-21swapper/321:58:383
59952460,2chrt0-21swapper/321:58:383
7561994534,7cyclictest0-21swapper/121:13:281
7561994534,7cyclictest0-21swapper/121:13:281
7561994436,4cyclictest0-21swapper/120:38:311
756199424,7cyclictest181rcu_preempt20:13:301
286352420,3sleep30-21swapper/322:58:393
286352420,3sleep30-21swapper/322:58:393
756199411,8cyclictest181rcu_preempt00:28:311
756199411,8cyclictest181rcu_preempt00:28:311
756199406,3cyclictest181rcu_preempt22:58:321
756199406,3cyclictest181rcu_preempt22:58:321
7561994029,6cyclictest0-21swapper/123:38:311
756099403,28cyclictest12640-21/usr/sbin/munin23:43:280
70272400,2chrt0-21swapper/023:28:350
70272400,2chrt0-21swapper/023:28:350
152852400,3sleep17559-21cyclictest23:48:421
152852400,3sleep17559-21cyclictest23:48:421
756199391,7cyclictest181rcu_preempt22:03:311
756199391,7cyclictest181rcu_preempt22:03:311
7560993918,13cyclictest171ktimers/000:08:290
301812390,2sleep030288-21bingrep00:28:380
301812390,2sleep030288-21bingrep00:28:380
756299385,14cyclictest0-21swapper/221:48:322
756299385,14cyclictest0-21swapper/221:48:322
756199386,10cyclictest181rcu_preempt22:13:321
756199386,10cyclictest181rcu_preempt22:13:321
7560993827,9cyclictest407-21in:imuxsock22:18:190
7560993827,9cyclictest407-21in:imuxsock22:18:190
123772380,3sleep10-21swapper/120:48:451
123772380,3sleep10-21swapper/120:48:451
756199379,20cyclictest394-21snmpd21:43:291
756199379,20cyclictest394-21snmpd21:43:291
756199374,11cyclictest181rcu_preempt23:23:331
756199374,11cyclictest181rcu_preempt23:23:331
756199373,29cyclictest663-21runrttasks22:38:311
756199373,29cyclictest663-21runrttasks22:38:311
756099374,22cyclictest55150irq/47-eth020:53:310
756099374,22cyclictest55150irq/47-eth020:53:310
147782372,6sleep20-21swapper/222:23:302
147782372,6sleep20-21swapper/222:23:302
289312360,22sleep10-21swapper/121:33:391
289312360,22sleep10-21swapper/121:33:391
756299352,24cyclictest7243-21chrt22:03:312
756299352,24cyclictest7243-21chrt22:03:312
756199353,27cyclictest394-21snmpd20:18:301
756199353,27cyclictest394-21snmpd20:18:301
7561993519,7cyclictest29-21ksoftirqd/119:28:311
756199351,28cyclictest3461-21taskset21:53:291
756199344,9cyclictest181rcu_preempt22:08:361
756199344,9cyclictest181rcu_preempt22:08:361
7561993428,5cyclictest17121-21netstat23:53:391
7561993428,5cyclictest17121-21netstat23:53:391
7561993424,5cyclictest281ktimers/122:48:291
7560993421,7cyclictest0-21swapper/021:03:300
756299331,23cyclictest18976-21chrt19:43:262
7561993326,5cyclictest16374-21sshd22:27:381
7561993326,5cyclictest16374-21sshd22:27:381
7561993323,8cyclictest29371-21processes20:08:401
7561993323,8cyclictest29371-21processes20:08:401
756099335,21cyclictest55150irq/47-eth000:33:310
756099335,21cyclictest55150irq/47-eth000:33:310
7560993325,5cyclictest0-21swapper/019:43:300
7560993325,5cyclictest0-21swapper/019:43:300
756199323,25cyclictest394-21snmpd20:28:301
7561993226,4cyclictest16951-21gltestperf22:28:361
7561993226,4cyclictest16951-21gltestperf22:28:361
7561993226,4cyclictest16951-21gltestperf22:28:361
756099325,21cyclictest55150irq/47-eth022:18:300
756099325,21cyclictest55150irq/47-eth022:18:300
7560993225,5cyclictest13020-21latency_hist19:28:180
7560993222,8cyclictest14732-21fschecks_count23:48:360
7560993222,8cyclictest14732-21fschecks_count23:48:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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