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2026-08-06 - 16:00

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 Thu Aug 06, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1912996638,16cyclictest35966irq/58-eth009:20:143
1892996453,8cyclictest10254-21ssh12:05:141
188499625,46cyclictest1841-21ssh10:30:120
189299616,8cyclictest131rcu_preempt09:25:121
189299604,46cyclictest6789-21ssh11:45:111
1900995718,30cyclictest27-21ksoftirqd/212:25:142
1900995718,30cyclictest27-21ksoftirqd/212:25:132
1900995539,10cyclictest3820-21ssh09:55:142
190099533,37cyclictest27267-21ssh09:50:112
189299525,8cyclictest131rcu_preempt12:25:131
189299525,8cyclictest131rcu_preempt12:25:131
189299521,38cyclictest9375-21ssh09:40:111
190099506,39cyclictest21231-21ssh11:35:122
190099502,32cyclictest367-21ssh09:35:122
1912994634,7cyclictest35966irq/58-eth012:00:113
1900994513,25cyclictest0-21swapper/210:50:132
1892994517,18cyclictest21-21ksoftirqd/112:15:121
191299444,31cyclictest35966irq/58-eth009:50:113
189299448,9cyclictest21-21ksoftirqd/109:50:121
189299444,33cyclictest28814-21ssh10:45:121
189299441,36cyclictest5381-21ssh10:50:121
188499441,30cyclictest15792-21ssh11:50:130
188499441,30cyclictest15792-21ssh11:50:120
188499430,35cyclictest6796-21sh11:45:130
191299412,20cyclictest0-21swapper/311:35:123
189299411,27cyclictest12860-21ssh10:00:131
191299394,22cyclictest35966irq/58-eth012:05:133
190099372,18cyclictest4706-21sh11:42:592
190099372,18cyclictest26747-21ssh09:49:502
1912993617,12cyclictest35966irq/58-eth012:10:133
188499362,24cyclictest30780-21ssh10:10:120
190099352,17cyclictest23226-21sh09:29:502
1900993518,9cyclictest0-21swapper/209:20:132
188499353,21cyclictest753-21sendmail-mta10:20:120
188499351,28cyclictest22659-21ssh12:30:120
191299344,19cyclictest0-21swapper/311:15:133
190099333,24cyclictest0-21swapper/209:30:502
1900993315,11cyclictest27-21ksoftirqd/208:40:132
189299331,22cyclictest3818-21sh09:55:141
190099322,18cyclictest9384-21ssh09:40:132
1900993215,11cyclictest0-21swapper/211:10:142
189299322,23cyclictest19210-21ssh12:10:141
188499323,20cyclictest25285-21ssh10:25:140
188499323,20cyclictest1266-21ssh12:00:120
190099312,22cyclictest17878-21ssh11:15:152
190099312,21cyclictest3321-21ssh11:25:112
189299312,21cyclictest28978-21rm09:30:501
189299311,23cyclictest20378-21ssh09:10:141
189299311,17cyclictest26818-21ssh11:20:131
188499314,16cyclictest19915-21sh10:40:110
188499312,23cyclictest32289-21ssh09:34:500
1884993118,6cyclictest0-21swapper/007:10:110
1912993011,12cyclictest35966irq/58-eth012:15:123
1900993013,12cyclictest10253-21sh12:05:132
190099301,25cyclictest24765-21ssh11:55:132
189299306,13cyclictest21-21ksoftirqd/107:40:101
188499302,22cyclictest12632-21ssh09:22:510
188499302,21cyclictest12858-21sh10:00:140
1884993018,6cyclictest3812-21apt-get09:55:130
191299296,14cyclictest35966irq/58-eth010:50:133
191299293,19cyclictest0-21swapper/312:25:213
191299293,19cyclictest0-21swapper/312:25:213
1912992913,7cyclictest0-21swapper/309:05:133
1900992919,8cyclictest0-21swapper/211:20:142
189299292,22cyclictest4707-21ssh11:43:001
189299292,21cyclictest1085566ssh10:35:131
1892992915,10cyclictest5861-21ssh09:20:131
1912992814,11cyclictest35966irq/58-eth010:25:143
190099283,17cyclictest0-21swapper/207:15:122
190099283,17cyclictest0-21swapper/207:15:122
190099282,21cyclictest22769-21ssh10:59:512
189299284,18cyclictest1829-21apt-get10:30:121
1884992811,12cyclictest12-21ksoftirqd/011:42:000
1912992712,10cyclictest35966irq/58-eth011:25:103
190099271,16cyclictest32344-21ls08:15:172
189299278,11cyclictest0-21swapper/109:05:121
189299275,9cyclictest131rcu_preempt12:35:121
188499279,6cyclictest12-21ksoftirqd/009:46:270
188499272,18cyclictest31750-21ssh12:15:210
191299263,11cyclictest0-21swapper/309:55:133
191299262,14cyclictest35966irq/58-eth011:50:133
191299262,14cyclictest35966irq/58-eth011:50:123
190099263,13cyclictest27346irq/40-dwc2_hso07:55:142
190099262,20cyclictest5513-21ssh12:37:202
190099261,3cyclictest0-21swapper/210:10:132
190099261,21cyclictest19922-21ssh10:40:132
190099261,14cyclictest22670-21sh12:30:132
189299269,12cyclictest201rcuc/110:05:141
1892992618,6cyclictest31865-21cron08:15:011
188499263,16cyclictest844-21munin-node09:00:130
191299255,12cyclictest0-21swapper/312:20:123
191299253,16cyclictest0-21swapper/309:30:503
191299253,15cyclictest0-21swapper/311:43:003
191299252,13cyclictest35966irq/58-eth010:35:123
190099258,14cyclictest23788-21cat12:10:312
190099253,15cyclictest27346irq/40-dwc2_hso11:30:112
190099251,16cyclictest29336-21ls10:25:302
190099251,14cyclictest20455-21cpuspeed09:10:142
189299255,14cyclictest14361-21ssh10:55:121
1892992515,6cyclictest0-21swapper/109:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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