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2026-09-01 - 17:23

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 Tue Sep 01, 2026 12:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1472599662,55cyclictest27035-21ssh11:30:151
14741995630,15cyclictest35966irq/58-eth012:30:133
1472599524,5cyclictest131rcu_preempt12:25:131
1472599521,42cyclictest27778-21ssh09:25:151
14733995024,19cyclictest0-21swapper/209:55:122
14741994827,17cyclictest35966irq/58-eth011:30:143
1472599483,8cyclictest131rcu_preempt07:30:131
14725994818,21cyclictest21-21ksoftirqd/110:25:141
1471299461,37cyclictest5145-21ssh11:00:130
1472599452,35cyclictest21624-21rm11:45:131
14741994321,15cyclictest35966irq/58-eth010:00:133
14733994333,6cyclictest22446-21ssh09:40:122
1472599435,29cyclictest2153-21ssh12:10:131
1472599435,29cyclictest2153-21ssh12:10:131
1472599412,4cyclictest131rcu_preempt10:30:121
1473399401,16cyclictest8951-21ssh11:20:122
1473399401,16cyclictest8951-21ssh11:20:122
1472599404,29cyclictest29726-21ssh10:20:111
14733993912,18cyclictest27-21ksoftirqd/210:45:122
1474199383,23cyclictest35966irq/58-eth011:35:153
1474199382,22cyclictest35966irq/58-eth012:35:143
14733993724,9cyclictest605-21sh09:10:132
14741993621,8cyclictest35966irq/58-eth009:25:153
1473399363,21cyclictest27346irq/40-dwc2_hso07:20:142
14733993610,6cyclictest5140-21sh11:00:122
1472599362,26cyclictest18863-21ssh09:20:151
1472599361,28cyclictest5863-21sshd12:30:131
14741993527,5cyclictest35966irq/58-eth010:55:133
1471299354,24cyclictest611-21ssh09:10:130
1474199343,23cyclictest35966irq/58-eth012:00:143
14733993413,15cyclictest27-21ksoftirqd/210:15:142
1472599342,25cyclictest14863-21ssh12:35:141
1471299342,23cyclictest28481-21ssh10:55:140
1473399338,14cyclictest0-21swapper/209:15:152
1473399338,14cyclictest0-21swapper/209:15:142
1473399335,15cyclictest25505-21ssh12:05:132
1472599332,24cyclictest10277-21ssh10:45:131
1471299336,21cyclictest26215-21ssh10:00:130
1471299331,24cyclictest9691-21ssh09:15:140
1471299331,24cyclictest9691-21ssh09:15:140
1471299331,21cyclictest12-21ksoftirqd/011:50:130
1471299331,21cyclictest12-21ksoftirqd/011:50:130
1474199321,18cyclictest35966irq/58-eth007:55:113
1473399321,20cyclictest32659-21diskmemload12:30:152
1471299322,22cyclictest24538-21usage_Anybus12:20:280
14712993221,6cyclictest0-21swapper/009:20:130
1474199314,17cyclictest35966irq/58-eth009:15:123
1474199314,17cyclictest35966irq/58-eth009:15:123
14741993117,11cyclictest35966irq/58-eth009:40:123
1473399310,7cyclictest16094-21munin-run12:00:012
1471299312,23cyclictest31541-21ssh09:45:160
14712993112,12cyclictest5856-21apt-get12:30:140
1474199303,18cyclictest35966irq/58-eth010:10:133
1473399304,14cyclictest27346irq/40-dwc2_hso09:00:112
1473399302,21cyclictest0-21swapper/208:05:132
1473399301,23cyclictest24553-21ssh10:35:162
1472599302,20cyclictest22450-21ssh09:40:121
1472599302,19cyclictest0-21swapper/110:05:141
1472599301,21cyclictest16519-21ssh12:00:141
1474199293,15cyclictest35966irq/58-eth011:50:123
1474199293,15cyclictest35966irq/58-eth011:50:123
1474199291,17cyclictest35966irq/58-eth011:55:123
1473399294,14cyclictest27346irq/40-dwc2_hso08:40:152
1473399291,17cyclictest29193-21munin-node12:25:122
1473399291,11cyclictest19408-21ssh10:30:272
14741992813,10cyclictest35966irq/58-eth011:00:143
14741992810,12cyclictest0-21swapper/310:23:283
1473399283,19cyclictest14702-21cyclictest11:09:592
1473399283,17cyclictest27346irq/40-dwc2_hso09:05:142
1473399282,20cyclictest0-21swapper/211:25:132
1473399281,18cyclictest7714-21cut08:10:162
1473399281,16cyclictest27346irq/40-dwc2_hso10:10:132
1472599281,21cyclictest7220-21ssh11:18:281
1471299282,19cyclictest8567-21ssh10:43:280
1471299282,19cyclictest8567-21ssh10:43:280
14741992717,6cyclictest35966irq/58-eth011:45:153
1474199271,15cyclictest35966irq/58-eth010:30:133
14741992710,8cyclictest35966irq/58-eth011:15:133
14741992710,11cyclictest0-21swapper/312:25:123
1473399274,14cyclictest27346irq/40-dwc2_hso09:45:142
1473399272,19cyclictest0-21swapper/207:50:142
1473399271,19cyclictest30754-21ssh11:50:142
1473399271,19cyclictest30754-21ssh11:50:142
1472599274,12cyclictest3613-21ssh11:35:141
1472599272,19cyclictest26683-21ssh12:22:281
14741992620,2cyclictest0-21swapper/310:40:133
14741992620,2cyclictest0-21swapper/310:40:133
1473399263,16cyclictest27346irq/40-dwc2_hso10:00:132
1473399261,5cyclictest27-21ksoftirqd/207:45:162
1473399261,15cyclictest4365-21ssh09:30:132
1472599262,20cyclictest23290-21ssh11:10:151
14725992612,9cyclictest8257-21df09:50:151
1471299265,17cyclictest6401-21apt-get10:25:130
1471299262,19cyclictest29231-21apt-get07:25:120
1471299262,18cyclictest31858-21ssh10:38:280
14712992620,3cyclictest32298-21ssh11:15:130
1473399259,3cyclictest131rcu_preempt12:03:482
1473399259,10cyclictest131rcu_preempt12:13:122
1473399259,10cyclictest131rcu_preempt12:13:122
1473399256,11cyclictest27-21ksoftirqd/210:21:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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