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2026-09-24 - 19:53

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 Sep 24, 2026 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1319099794,7cyclictest131rcu_preempt10:25:120
1319099762,60cyclictest15857-21ssh09:55:130
1319099692,31cyclictest6224-21ssh11:20:110
1319099645,45cyclictest22854-21ssh10:35:120
1319099641,9cyclictest131rcu_preempt09:40:120
13218995845,10cyclictest35966irq/58-eth012:20:103
13218995441,7cyclictest35966irq/58-eth011:30:183
1319899524,39cyclictest3074-21ssh09:30:131
1319099492,33cyclictest11387-21ssh12:35:110
1321899482,33cyclictest35966irq/58-eth008:00:133
1319099471,38cyclictest6765-21ssh09:50:110
1319099441,4cyclictest131rcu_preempt12:25:120
1319099441,4cyclictest131rcu_preempt12:25:110
13198994310,3cyclictest131rcu_preempt09:25:131
1321899425,22cyclictest35966irq/58-eth012:00:123
1319099422,33cyclictest17506-21ssh09:20:120
1319099422,33cyclictest17506-21ssh09:20:120
1321099412,30cyclictest17263-21kworker/u8:011:25:132
1319099411,8cyclictest131rcu_preempt07:25:120
1319099411,33cyclictest2855-21ssh11:00:150
1319099411,23cyclictest16854-21ssh12:20:100
13218994026,9cyclictest35966irq/58-eth009:10:113
1319899408,5cyclictest131rcu_preempt11:35:131
13218993918,12cyclictest0-21swapper/311:35:133
13218993819,11cyclictest35966irq/58-eth011:25:133
1321099382,18cyclictest17019-21ssh09:35:362
1319099378,20cyclictest8259-21ssh10:45:120
13190993716,9cyclictest12-21ksoftirqd/011:30:160
1321899362,20cyclictest35966irq/58-eth011:45:113
13210993614,14cyclictest261rcuc/212:00:132
1321899354,21cyclictest35966irq/58-eth011:20:113
13210993523,3cyclictest0-21swapper/209:55:122
1319899353,25cyclictest19427-21ssh10:15:151
1319099352,25cyclictest30236-21ls09:45:150
1319099352,25cyclictest30236-21ls09:45:140
1319099352,22cyclictest12-21ksoftirqd/010:40:120
13190993520,6cyclictest0-21swapper/010:30:160
1321899346,21cyclictest35966irq/58-eth010:25:133
1321099348,14cyclictest0-21swapper/211:55:112
1319899341,25cyclictest9725-21rm11:40:121
1319899341,19cyclictest20904-21ssh11:10:141
13218993324,5cyclictest33-21ksoftirqd/309:20:133
13218993324,5cyclictest33-21ksoftirqd/309:20:123
1321899331,18cyclictest35966irq/58-eth009:30:133
13218993215,13cyclictest0-21swapper/311:40:123
13218993213,10cyclictest0-21swapper/308:50:123
13218993213,10cyclictest0-21swapper/308:50:113
1321099323,21cyclictest27-21ksoftirqd/210:15:412
1319099324,18cyclictest12-21ksoftirqd/010:05:120
1319099323,25cyclictest24862-21ssh10:00:140
1321899312,20cyclictest35966irq/58-eth009:55:133
1321899311,17cyclictest35966irq/58-eth011:15:103
1321899311,17cyclictest35966irq/58-eth011:15:093
1321099313,18cyclictest27346irq/40-dwc2_hso08:55:132
13210993111,10cyclictest27-21ksoftirqd/211:15:112
13210993111,10cyclictest27-21ksoftirqd/211:15:102
1319899311,4cyclictest12075-21ssh09:35:111
1319899311,27cyclictest30156-21ssh09:45:131
1319899311,27cyclictest30156-21ssh09:45:121
1319099312,22cyclictest27762-21ssh11:50:150
1321899305,19cyclictest35966irq/58-eth010:40:113
1321099306,12cyclictest27346irq/40-dwc2_hso08:25:132
1319899304,17cyclictest29203-21sshd08:00:151
1319099302,22cyclictest2035-21diskmemload09:29:150
1319099301,22cyclictest2464-21ssh12:30:150
13218992923,3cyclictest0-21swapper/309:50:103
1321899291,20cyclictest35966irq/58-eth011:05:133
1321099293,17cyclictest27346irq/40-dwc2_hso07:55:132
1321099292,17cyclictest27346irq/40-dwc2_hso08:10:122
1321099291,22cyclictest0-21swapper/207:30:132
1321099291,22cyclictest0-21swapper/207:30:122
1319899292,20cyclictest29793-21ssh11:15:101
1319899292,20cyclictest29793-21ssh11:15:101
1319899291,11cyclictest21-21ksoftirqd/108:10:131
1321899284,13cyclictest35966irq/58-eth007:50:133
13210992814,9cyclictest0-21swapper/210:30:162
13198992812,8cyclictest23057-21ssh10:35:151
1321899273,16cyclictest0-21swapper/310:15:423
13218992721,4cyclictest0-21swapper/311:50:143
13218992719,5cyclictest0-21swapper/310:45:113
13218992717,7cyclictest0-21swapper/310:05:123
13218992717,6cyclictest0-21swapper/311:00:153
13218992713,7cyclictest0-21swapper/309:40:133
1321099272,18cyclictest930-21snmpd08:30:142
1321099271,8cyclictest870166ssh09:15:152
13198992720,3cyclictest21-21ksoftirqd/107:50:121
1319099275,13cyclictest0-21swapper/007:45:140
1321899264,12cyclictest0-21swapper/309:15:123
1321899262,20cyclictest35966irq/58-eth009:45:143
1321899262,20cyclictest35966irq/58-eth009:45:133
13218992620,3cyclictest0-21swapper/310:35:123
13218992613,7cyclictest0-21swapper/311:10:163
1319899263,3cyclictest131rcu_preempt09:05:141
1319899262,20cyclictest17522-21ssh09:20:141
1319899262,20cyclictest17522-21ssh09:20:131
1319899261,18cyclictest844-21munin-node07:30:141
1319899261,18cyclictest844-21munin-node07:30:131
1319099262,18cyclictest12188-21df_inode09:35:150
13190992615,7cyclictest0-21swapper/009:30:120
1319099261,19cyclictest746-21ssh11:35:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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