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2026-09-03 - 18:17

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 03, 2026 12:45:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2680199656,51cyclictest13107-21ssh09:10:130
26819996318,15cyclictest26759-21apt-get12:35:142
26819995212,30cyclictest0-21swapper/207:20:132
2681099482,4cyclictest131rcu_preempt09:30:161
2681999461,35cyclictest10456-21ssh11:50:152
2680199413,25cyclictest26650-21ssh11:05:120
2680199411,32cyclictest4744-21ssh10:35:130
2681999401,28cyclictest7833-21ssh09:25:132
2681999401,28cyclictest7833-21ssh09:25:122
2680199403,28cyclictest15389-21ssh10:05:130
2682899392,24cyclictest35966irq/58-eth010:45:153
2682899391,24cyclictest35966irq/58-eth009:05:143
26819993920,14cyclictest13091-21apt-get09:10:122
2681999391,22cyclictest10079-21ssh10:20:142
2682899374,21cyclictest35966irq/58-eth010:15:123
2681099371,26cyclictest26666-21ssh11:05:121
2681099371,12cyclictest30591-21grep12:35:301
2680199373,22cyclictest2229-21kworker/u8:110:20:130
2682899363,19cyclictest35966irq/58-eth009:35:113
2682899362,16cyclictest35966irq/58-eth011:25:113
26828993618,13cyclictest35966irq/58-eth010:00:113
2681099361,20cyclictest25897-21ssh09:35:111
2681099361,10cyclictest7524-21kthreadcore10:00:191
2680199364,23cyclictest24415-21ssh10:10:160
2681099351,9cyclictest31736-21kthreadcore08:55:181
2681099351,23cyclictest20716-21sh09:50:171
2681099351,10cyclictest24497-21kthreadcore11:20:221
2682899343,17cyclictest35966irq/58-eth012:25:123
2682899341,20cyclictest35966irq/58-eth012:20:123
2681099348,4cyclictest131rcu_preempt12:10:181
2681099347,4cyclictest12380-21kthreadcore08:00:211
2681099346,6cyclictest30346-21cut07:45:211
2681099343,6cyclictest0-21swapper/112:20:111
2681099342,10cyclictest4763-21ssh10:35:141
2681099341,9cyclictest3836-21irqrtprio11:10:181
2681099341,10cyclictest7220-21kthreadcore07:20:201
2681099341,10cyclictest30421-21ntp_states07:10:251
2681099341,10cyclictest10465-21irqcore10:20:191
2681099340,10cyclictest11613-21cut07:25:221
2681099340,10cyclictest11613-21cut07:25:211
2680199343,24cyclictest12-21ksoftirqd/011:25:120
26819993320,9cyclictest12230-21apt-get11:15:132
2681099338,4cyclictest964-21sh12:00:441
2681099338,4cyclictest964-21sh12:00:431
2681099337,21cyclictest21-21ksoftirqd/108:40:141
2681099333,27cyclictest28211-21ssh10:30:161
2681099332,9cyclictest12179-21ps10:55:251
2681099331,9cyclictest18088-21ssh12:30:221
2681099331,9cyclictest10937-21cut09:05:221
2681099331,29cyclictest31184-21ssh09:20:121
2681099331,10cyclictest6378-21cut12:05:201
2681099331,10cyclictest24130-21irqstats07:40:181
2681099331,10cyclictest21522-21kthreadcore07:35:221
2681099330,10cyclictest2851-21cut07:50:211
2682899322,19cyclictest35966irq/58-eth010:50:113
26819993224,3cyclictest11647-21apt-get09:45:122
26819993223,4cyclictest28201-21apt-get10:30:182
2681099327,4cyclictest25145-21cut10:45:211
2681099323,8cyclictest29926-21fschecks_time09:55:151
2681099321,9cyclictest7403-21kthreadcore08:30:171
2681099321,9cyclictest23423-21cut09:15:191
2681099321,9cyclictest19986-21grep11:35:301
2681099321,9cyclictest19687-21wc08:10:021
2681099321,9cyclictest1798-21switchtime11:25:271
2681099321,9cyclictest16483-21kthreadcore07:30:211
2681099321,28cyclictest11677-21ssh09:45:121
2681099321,10cyclictest3216-21cut08:25:201
2681099321,10cyclictest22977-21ssh12:15:121
2682899313,16cyclictest35966irq/58-eth011:30:173
2682899311,21cyclictest35966irq/58-eth012:10:173
2681999315,21cyclictest0-21swapper/212:29:342
2681999315,15cyclictest27346irq/40-dwc2_hso09:35:142
2681999312,24cyclictest5373-21ssh12:21:332
26819993113,10cyclictest0-21swapper/211:30:162
2681099311,9cyclictest3150-21pluginstate10:50:271
2681099311,12cyclictest1319-21if_eth110:15:171
2681099311,10cyclictest27262-21kthreadcore08:15:211
2681099311,10cyclictest23400-21proc_pri08:10:241
2680199312,17cyclictest12242-21ssh11:15:120
2682899303,18cyclictest35966irq/58-eth009:40:143
2682899303,18cyclictest35966irq/58-eth009:40:133
2681999303,16cyclictest27346irq/40-dwc2_hso08:10:112
26819993011,14cyclictest22962-21ssh12:15:122
2681099302,9cyclictest12628-21apt-get09:10:051
2681099302,8cyclictest844-21munin-node08:45:131
2681099302,10cyclictest18095-21tr10:05:211
2681099301,9cyclictest5547-21diskstats07:55:131
2681099301,9cyclictest5547-21diskstats07:55:121
2681099301,9cyclictest30820-21kthreadcore08:20:201
2681099301,9cyclictest19213-21cut11:00:231
2681099301,10cyclictest8549-21irqstats09:25:191
2681099301,10cyclictest8549-21irqstats09:25:181
26801993019,6cyclictest12618-21diskmemload11:55:110
2680199301,21cyclictest13850-21ssh10:40:130
2680199301,21cyclictest12618-21diskmemload09:55:140
2682899291,14cyclictest35966irq/58-eth010:05:133
2681999292,21cyclictest0-21swapper/209:00:132
26819992918,8cyclictest26965-21apt-get07:10:152
2681099294,6cyclictest5336-21kthreadcore09:00:211
2681099293,13cyclictest12618-21diskmemload10:40:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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