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2026-07-03 - 08:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot4s.osadl.org (updated Fri Jul 03, 2026 00:45:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3122499674,3cyclictest27346irq/40-dwc2_hso19:50:142
3122499642,56cyclictest0-21swapper/223:05:122
3122499634,4cyclictest0-21swapper/200:15:122
3120799614,48cyclictest15921-21ssh23:15:140
3122499573,4cyclictest0-21swapper/219:15:132
3122499561,49cyclictest0-21swapper/221:00:142
3122499521,30cyclictest5590-21ssh23:45:152
3122499511,3cyclictest0-21swapper/222:55:112
3120799504,6cyclictest131rcu_preempt19:10:140
3123199493,30cyclictest35966irq/58-eth023:15:143
3122499497,16cyclictest0-21swapper/200:25:182
3122499484,39cyclictest27346irq/40-dwc2_hso19:30:112
3122499482,4cyclictest0-21swapper/221:15:132
3123199474,27cyclictest35966irq/58-eth022:05:123
3120799473,8cyclictest131rcu_preempt21:00:130
3123199453,25cyclictest35966irq/58-eth022:40:123
3122499451,7cyclictest0-21swapper/220:40:112
3122499441,8cyclictest0-21swapper/222:40:142
3121599442,33cyclictest3015-21ssh21:20:141
3122499434,29cyclictest19667-21ssh22:05:122
3122499432,5cyclictest27346irq/40-dwc2_hso22:25:122
3122499422,4cyclictest0-21swapper/220:25:102
3122499422,3cyclictest14271-21ssh22:20:132
3122499414,11cyclictest27346irq/40-dwc2_hso23:00:192
3122499392,31cyclictest17613-21sh00:09:422
3122499391,5cyclictest6817-21ssh21:40:112
3122499382,8cyclictest5866-21ssh22:15:192
3122499382,31cyclictest24946-21ssh00:12:412
3122499381,7cyclictest3466-21sh22:50:122
3122499381,10cyclictest5224-21latency_hist23:45:012
3121599384,30cyclictest13068-21ssh00:25:171
3121599381,28cyclictest24922-21sh21:50:131
3120799384,24cyclictest23214-21ssh22:25:120
3122499376,4cyclictest8921-21fschecks_count22:35:152
3122499376,4cyclictest8921-21fschecks_count22:35:142
3122499371,8cyclictest28475-21idleruntime-cro23:40:022
3122499371,8cyclictest18168-21latency_hist19:30:032
3122499370,8cyclictest1479-21latency_hist23:25:022
3122499370,8cyclictest13585-21kthreadcore21:05:202
3122499370,8cyclictest10422-21apt-config23:30:022
3123199362,19cyclictest35966irq/58-eth019:25:123
31231993617,12cyclictest35966irq/58-eth000:30:143
3122499361,9cyclictest15833-21latency_hist20:35:012
3122499361,8cyclictest2546-21kthreadcore19:45:202
3122499361,7cyclictest32575-21/usr/sbin/munin00:00:262
3122499361,7cyclictest10636-21cpuspeed22:00:152
3122499360,9cyclictest32110-21grep20:50:192
3122499360,10cyclictest23124-21fschecks_count19:35:162
3120799363,23cyclictest3923-21ssh00:20:130
31207993610,8cyclictest131rcu_preempt23:05:130
3123199352,21cyclictest35966irq/58-eth019:45:133
3123199352,20cyclictest35966irq/58-eth000:35:123
3122499355,4cyclictest3891-21unixbench_singl22:30:302
3122499355,4cyclictest3891-21unixbench_singl22:30:292
3122499351,9cyclictest0-21swapper/220:10:122
3122499351,8cyclictest31351-21/usr/sbin/munin19:10:252
3122499351,8cyclictest2686-21/usr/sbin/munin20:55:282
3122499351,8cyclictest2686-21/usr/sbin/munin20:55:272
3122499351,8cyclictest18783-21usage_Anybus23:50:322
3122499351,7cyclictest7072-21ls21:20:302
3122499351,7cyclictest29025-21/usr/sbin/munin20:15:252
3122499351,5cyclictest13368-21grep19:55:252
3122499351,10cyclictest5509-21timerandwakeup21:55:292
3122499350,8cyclictest27213-21ssh23:55:262
3122499350,8cyclictest21929-21tr20:05:202
31215993522,7cyclictest21-21ksoftirqd/120:00:121
3120799356,16cyclictest19652-21ssh22:05:110
3120799354,4cyclictest131rcu_preempt23:25:140
3123199345,19cyclictest35966irq/58-eth023:20:123
3122499342,5cyclictest1979-21grep21:35:322
3122499341,9cyclictest16574-21uname21:45:202
3122499341,9cyclictest15521-21cron23:15:022
3122499341,5cyclictest3889-21/usr/sbin/munin00:20:182
3122499340,9cyclictest30593-21ntpq22:45:272
3122499340,9cyclictest29808-21awk21:35:012
3121599345,23cyclictest30391-21ssh23:05:111
3120799341,21cyclictest29444-21kworker/u8:120:25:100
3122499331,8cyclictest10360-21apt-get23:30:042
3122499331,7cyclictest22057-21ssh00:30:132
3120799337,15cyclictest131rcu_preempt21:50:130
3123199322,14cyclictest35966irq/58-eth000:10:133
3122499327,22cyclictest30098-21sshd20:49:422
3122499323,8cyclictest11009-21kthreadcore19:20:212
3122499321,9cyclictest32374-21ssh22:10:252
3122499321,9cyclictest27222-21kthreadcore21:50:212
3122499321,7cyclictest31108-21entropy00:35:162
3122499321,7cyclictest19926-21timerandwakeup23:15:302
3122499321,5cyclictest23866-21ssh21:12:272
3123199311,17cyclictest35966irq/58-eth021:50:123
3122499310,8cyclictest4556-21kthreadcore20:20:232
3121599313,21cyclictest17339-21ssh21:10:121
31215993121,5cyclictest0-21swapper/119:50:131
3121599311,22cyclictest14291-21ssh22:20:141
31207993111,3cyclictest131rcu_preempt19:40:130
3120799310,3cyclictest131rcu_preempt19:35:110
3123199308,19cyclictest0-21swapper/300:00:133
3123199304,14cyclictest0-21swapper/321:40:133
3123199303,16cyclictest35966irq/58-eth023:10:113
3122499304,6cyclictest19655-21timerandwakeup20:35:292
3122499303,18cyclictest27346irq/40-dwc2_hso21:25:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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