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2025-08-29 - 12:02

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 Fri Aug 29, 2025 00:44:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
478221710,2sleep14783-21switchtime22:07:431
478221710,2sleep14783-21switchtime22:07:431
998421400,3sleep09988-21gltestperf22:22:370
998421400,3sleep09988-21gltestperf22:22:370
241852990,2chrt24187-21sed22:57:420
241852990,2chrt24187-21sed22:57:420
279332760,3sleep20-21swapper/220:17:412
279332760,3sleep20-21swapper/220:17:412
285842720,3sleep30-21swapper/300:37:223
285842720,3sleep30-21swapper/300:37:223
267362690,1sleep00-21swapper/021:42:290
267362690,1sleep00-21swapper/021:42:290
211972690,2chrt0-21swapper/322:52:313
211972690,2chrt0-21swapper/322:52:313
45902640,3sleep00-21swapper/020:42:400
204899642,11cyclictest181rcu_preempt21:07:311
124812600,2sleep012670-21sed23:52:420
124812600,2sleep012670-21sed23:52:420
305622570,1sleep130332-21latency_hist23:17:221
305622570,1sleep130332-21latency_hist23:17:221
299562550,2sleep30-21swapper/300:37:473
299562550,2sleep30-21swapper/300:37:473
2048995529,16cyclictest304802sleep120:27:301
2048995529,16cyclictest304802sleep120:27:301
204899544,4cyclictest181rcu_preempt23:57:281
134572530,2sleep30-21swapper/319:42:293
134572530,2sleep30-21swapper/319:42:293
106752510,2sleep010679-21timerwakeupswit20:57:390
2047995024,18cyclictest171ktimers/020:17:280
2047995024,18cyclictest171ktimers/020:17:280
56842470,3sleep032397-21kworker/u9:4+xprtiod22:12:200
56842470,3sleep032397-21kworker/u9:4+xprtiod22:12:200
204899475,6cyclictest181rcu_preempt23:27:281
204899475,6cyclictest181rcu_preempt23:27:281
2047994711,15cyclictest0-21swapper/000:02:260
125442470,2sleep10-21swapper/121:02:431
125442470,2sleep10-21swapper/121:02:431
97492460,2sleep19752-21fschecks_count19:32:301
97492460,2sleep19752-21fschecks_count19:32:301
273952460,1sleep00-21swapper/023:07:350
273952460,1sleep00-21swapper/023:07:350
22002450,4chrt2203-21fschecks_time22:02:310
22002450,4chrt2203-21fschecks_time22:02:310
208882440,3sleep120891-21latency_hist20:02:251
208882440,3sleep120891-21latency_hist20:02:251
204899442,5cyclictest181rcu_preempt20:42:281
2048994420,20cyclictest281ktimers/121:37:301
204799442,31cyclictest5838-21taskset22:12:270
204799442,31cyclictest5838-21taskset22:12:270
122972440,2sleep30-21swapper/321:02:413
122972440,2sleep30-21swapper/321:02:413
8592430,2sleep1999-21timerwakeupswit20:32:411
8592430,2sleep1999-21timerwakeupswit20:32:411
2050994321,15cyclictest153122sleep300:02:263
2048994321,15cyclictest281ktimers/122:42:281
2048994321,15cyclictest281ktimers/122:42:281
2047994220,17cyclictest171ktimers/021:27:270
2047994220,17cyclictest171ktimers/021:27:270
65892390,3sleep20-21swapper/219:22:392
237552390,4chrt0-21swapper/220:07:402
237552390,4chrt0-21swapper/220:07:402
217222390,3sleep20-21swapper/221:27:362
217222390,3sleep20-21swapper/221:27:362
204899394,26cyclictest11547-21apt-get22:27:261
204899394,26cyclictest11547-21apt-get22:27:261
204899392,2cyclictest181rcu_preempt19:47:281
204899392,2cyclictest181rcu_preempt19:47:281
2047993923,10cyclictest663-21runrttasks20:12:290
2047993923,10cyclictest663-21runrttasks20:12:290
222042380,3sleep30-21swapper/321:27:413
222042380,3sleep30-21swapper/321:27:413
2047993811,19cyclictest201rcuc/023:32:270
2047993811,19cyclictest201rcuc/023:32:270
261452370,3sleep10-21swapper/120:14:471
261452370,3sleep10-21swapper/120:14:471
204899373,2cyclictest181rcu_preempt19:52:301
316472360,3sleep30-21swapper/320:27:433
316472360,3sleep30-21swapper/320:27:433
288842360,4sleep30-21swapper/321:47:353
288842360,4sleep30-21swapper/321:47:353
33212350,1sleep20-21swapper/223:27:432
33212350,1sleep20-21swapper/223:27:432
204799354,23cyclictest9085-21kworker/0:1+events19:57:290
204799354,23cyclictest9085-21kworker/0:1+events19:57:290
5082340,2sleep0201rcuc/020:32:350
5082340,2sleep0201rcuc/020:32:350
2047993424,7cyclictest26627-21latency_hist21:42:220
254852330,1sleep025569-21bingrep00:27:360
254852330,1sleep025569-21bingrep00:27:360
252342330,3chrt0-21swapper/323:02:323
204799334,22cyclictest55150irq/47-eth023:17:290
204799334,22cyclictest55150irq/47-eth023:17:290
2047993327,4cyclictest6164-21gltestperf19:22:330
204999325,16cyclictest135072sleep222:32:332
204999325,16cyclictest135072sleep222:32:332
2048993227,3cyclictest19102-21kworker/u9:3-rpciod21:57:161
2048993224,6cyclictest30815-21fschecks_count23:17:311
2048993224,6cyclictest30815-21fschecks_count23:17:311
204899322,2cyclictest181rcu_preempt00:07:301
204899322,2cyclictest181rcu_preempt00:07:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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