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2026-05-06 - 18:43

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 Wed May 06, 2026 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5177996421,11cyclictest131rcu_preempt07:50:121
516999638,41cyclictest14655-21ssh11:10:120
5186995811,33cyclictest0-21swapper/211:10:122
517799573,47cyclictest18644-21ssh09:25:131
5186995530,12cyclictest4104-21apt-get11:40:132
518699512,28cyclictest369-21ssh11:20:112
5186995112,33cyclictest0-21swapper/209:00:122
516999512,35cyclictest16233-21ssh10:35:130
516999504,4cyclictest131rcu_preempt12:20:130
517799493,33cyclictest3090-21ssh10:10:121
517799492,34cyclictest9458-21ssh11:25:121
516999496,5cyclictest131rcu_preempt07:35:120
516999481,39cyclictest7154-21ssh10:30:120
5186994727,17cyclictest9544-21apt-get09:20:112
5177994733,8cyclictest0-21swapper/110:20:121
5186994632,9cyclictest12844-21apt-get08:25:122
5177994615,23cyclictest21-21ksoftirqd/107:40:131
516999462,37cyclictest25914-21ssh12:10:110
519699442,25cyclictest35966irq/58-eth010:10:123
517799443,32cyclictest20623-21ssh12:25:121
5169994420,17cyclictest12-21ksoftirqd/010:25:110
5196994319,16cyclictest321rcuc/307:50:133
5186994313,25cyclictest0-21swapper/212:35:132
516999433,30cyclictest23413-21diskmemload10:05:120
5169994326,5cyclictest12-21ksoftirqd/009:15:120
516999432,28cyclictest17441-21ssh10:00:130
5186994231,4cyclictest13184-21apt-get11:45:132
5177994232,6cyclictest0-21swapper/112:30:121
516999425,7cyclictest131rcu_preempt11:40:130
5186994128,3cyclictest19969-21apt-get10:55:132
5186994126,10cyclictest16880-21apt-get12:05:112
516999411,29cyclictest23719-21ssh11:15:130
5186994021,14cyclictest0-21swapper/209:35:132
517799401,31cyclictest4503-21ssh09:35:131
5186993922,13cyclictest27346irq/40-dwc2_hso08:45:112
517799392,29cyclictest22660-21ssh09:45:131
5186993814,18cyclictest23809-21ssh09:10:122
517799384,24cyclictest29037-21ssh11:00:121
5169993810,18cyclictest19981-21ssh10:55:120
519699373,22cyclictest35966irq/58-eth012:30:123
518699376,21cyclictest27-21ksoftirqd/210:10:122
5186993728,4cyclictest29636-21apt-get07:35:112
518699371,26cyclictest5660-21ssh11:05:142
517799371,29cyclictest18494-21ssh11:30:121
519699363,21cyclictest35966irq/58-eth011:00:113
5196993622,7cyclictest35966irq/58-eth009:35:123
518699362,26cyclictest0-21swapper/211:35:142
5186993620,11cyclictest0-21swapper/210:40:132
5169993616,9cyclictest12-21ksoftirqd/010:40:130
5186993526,7cyclictest29617-21apt-get12:30:132
5186993519,10cyclictest0-21swapper/209:45:122
516999354,6cyclictest131rcu_preempt10:15:130
518699345,12cyclictest22245-21ssh10:36:502
5186993424,6cyclictest2508-21apt-get12:15:132
5186993413,18cyclictest31638-21ssh09:30:272
5186993410,9cyclictest15381-21ps12:20:272
518699337,13cyclictest14685-21/usr/sbin/munin07:15:322
518699336,12cyclictest32068-21sed08:45:032
5186993319,11cyclictest29032-21ssh11:00:112
517799333,10cyclictest131rcu_preempt08:40:111
516999333,22cyclictest22247-21ssh11:50:130
518699323,12cyclictest7886-21ssh12:00:132
5186993211,17cyclictest21620-21unixbench_singl10:00:292
5177993216,10cyclictest5158-21cyclictest12:35:121
5169993216,10cyclictest5158-21cyclictest09:40:120
5196993122,6cyclictest35966irq/58-eth011:10:133
5196993117,11cyclictest35966irq/58-eth011:55:123
5196993115,10cyclictest35966irq/58-eth011:05:133
518699316,9cyclictest1418-21kthreadcore08:10:202
518699313,18cyclictest27346irq/40-dwc2_hso07:25:112
5186993116,11cyclictest2042-21apt07:40:122
5186993115,13cyclictest16432-21/usr/sbin/munin07:55:302
5186993115,12cyclictest0-21swapper/208:05:112
5186993115,12cyclictest0-21swapper/208:05:102
5186993110,13cyclictest1160-21cut11:55:202
5177993121,5cyclictest0-21swapper/112:10:141
516999312,25cyclictest9556-21ssh09:20:120
518699305,17cyclictest23413-21diskmemload11:33:402
518699305,12cyclictest0-21swapper/209:25:072
518699303,18cyclictest23413-21diskmemload09:52:472
518699302,21cyclictest0-21swapper/207:30:142
5186993014,13cyclictest7850-21ntp_192.168.11408:50:242
5186993011,14cyclictest11828-21apt-get10:15:042
517799303,25cyclictest27756-21ssh09:30:121
517799302,21cyclictest23818-21ssh09:10:141
5196992917,6cyclictest0-21swapper/311:25:123
5196992916,9cyclictest0-21swapper/310:30:123
5196992916,10cyclictest35966irq/58-eth010:25:123
518699296,13cyclictest10325-21ssh10:49:482
518699293,18cyclictest27346irq/40-dwc2_hso07:10:142
518699293,11cyclictest14535-21ntp_192.168.11410:50:232
518699292,21cyclictest0-21swapper/207:50:132
518699292,20cyclictest0-21swapper/212:25:122
518699292,11cyclictest0-21swapper/210:08:532
5186992914,11cyclictest0-21swapper/208:35:122
5186992913,12cyclictest6770-21ps08:15:262
5186992910,17cyclictest21175-21kthreadcore09:05:212
517799297,15cyclictest21-21ksoftirqd/109:00:131
516999294,18cyclictest12-21ksoftirqd/011:30:140
516999293,21cyclictest8119-21ssh09:35:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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