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2026-06-20 - 23:24

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 Sat Jun 20, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2802299743,55cyclictest11851-21ssh11:15:111
2800999701,6cyclictest131rcu_preempt12:00:120
2800999664,6cyclictest131rcu_preempt08:15:120
28022996316,9cyclictest131rcu_preempt12:05:151
28022996024,26cyclictest21-21ksoftirqd/108:40:151
2802299581,50cyclictest13802-21ssh10:40:131
2800999572,38cyclictest1233-21ssh10:15:130
2804799537,29cyclictest35966irq/58-eth011:30:143
2802299501,36cyclictest3303-21ssh09:40:161
2804799484,27cyclictest35966irq/58-eth011:50:153
2802299432,35cyclictest32238-21ssh09:20:131
2800999431,27cyclictest8900-21ssh09:25:150
2802299423,28cyclictest17347-21ssh11:00:121
28009994210,4cyclictest131rcu_preempt11:55:270
28037994113,10cyclictest27-21ksoftirqd/212:05:142
2802299414,30cyclictest6685-21ssh10:00:131
2800999412,33cyclictest28199-21ssh10:30:140
2800999412,33cyclictest28199-21ssh10:30:130
28037994011,24cyclictest27-21ksoftirqd/211:15:172
2802299401,27cyclictest9842-21ssh11:50:141
28009993913,17cyclictest12-21ksoftirqd/010:50:130
28009993913,17cyclictest12-21ksoftirqd/010:50:130
2803799381,29cyclictest26318-21ssh11:05:122
2800999384,27cyclictest30115-21sh09:55:130
2804799365,21cyclictest35966irq/58-eth009:15:143
28047993624,6cyclictest35966irq/58-eth011:05:133
2804799362,22cyclictest35966irq/58-eth009:20:123
2804799361,20cyclictest35966irq/58-eth011:55:133
28037993618,13cyclictest0-21swapper/211:39:172
2803799352,25cyclictest14214-21sed10:40:172
28047993414,10cyclictest35966irq/58-eth011:35:133
2803799342,24cyclictest23486-21irqstats10:45:192
28037993413,15cyclictest0-21swapper/208:25:142
28047993314,12cyclictest0-21swapper/311:40:143
2800999332,26cyclictest25673-21ssh12:35:130
2804799325,18cyclictest35966irq/58-eth008:25:163
2804799322,21cyclictest35966irq/58-eth012:05:143
2804799322,19cyclictest35966irq/58-eth009:50:123
2803799322,21cyclictest28680-21cut10:30:172
2803799322,21cyclictest28680-21cut10:30:172
2803799322,19cyclictest27346irq/40-dwc2_hso07:10:142
2802299322,22cyclictest6354-21ssh11:30:141
2800999323,26cyclictest21219-21ssh09:50:130
2800999322,26cyclictest31235-21ssh12:20:130
2804799312,17cyclictest35966irq/58-eth009:30:143
2802299313,18cyclictest21-21ksoftirqd/109:15:141
2802299312,21cyclictest3389-21cut11:10:171
2800999312,23cyclictest22448-21ssh11:38:170
28009993111,7cyclictest12-21ksoftirqd/008:45:130
2800999302,22cyclictest6596-21hostname11:30:170
2800999302,20cyclictest14246-21ssh09:10:130
2803799293,17cyclictest27346irq/40-dwc2_hso11:30:132
2803799292,17cyclictest27346irq/40-dwc2_hso07:15:132
2800999292,21cyclictest11168-21sh10:37:160
2800999291,22cyclictest8590-21fw_packets10:55:170
2800999282,20cyclictest25347-21ssh11:04:170
2800999282,20cyclictest20948-21ssh10:43:170
2800999282,18cyclictest22209-21ssh12:15:130
2800999281,18cyclictest16704-21ssh12:30:120
2804799273,14cyclictest35966irq/58-eth008:05:133
28037992713,4cyclictest27-21ksoftirqd/212:00:122
2800999272,19cyclictest13151-21ssh12:10:140
2800999272,18cyclictest26688-21if_eth111:05:170
2803799263,18cyclictest0-21swapper/211:10:172
28037992615,7cyclictest261rcuc/209:20:132
28037992615,3cyclictest0-21swapper/212:10:132
2800999263,18cyclictest10252-21ssh10:20:140
2804799251,16cyclictest0-21swapper/309:35:133
2804799251,12cyclictest35966irq/58-eth010:50:133
2804799251,12cyclictest35966irq/58-eth010:50:133
2803799257,8cyclictest17488-21cron09:30:012
2803799253,17cyclictest0-21swapper/211:00:382
2803799252,9cyclictest22599-21ssh12:15:172
2803799252,8cyclictest21240-21ssh11:20:172
28037992513,9cyclictest26165-21ssh09:34:482
28037992510,4cyclictest27-21ksoftirqd/209:56:592
2802299253,16cyclictest10225-21apt-get10:20:121
2804799247,11cyclictest35966irq/58-eth010:35:143
2804799243,10cyclictest0-21swapper/310:43:173
2804799242,14cyclictest0-21swapper/310:30:123
2804799242,14cyclictest0-21swapper/310:30:123
2803799241,17cyclictest9857-21ssh11:50:152
2800999249,11cyclictest0-21swapper/010:05:130
2800999243,14cyclictest7753-21sh12:25:110
2800999241,17cyclictest2893-21ssh11:10:140
2800999241,17cyclictest23265-21ssh09:15:130
2804799231,12cyclictest35966irq/58-eth010:15:143
2803799239,10cyclictest0-21swapper/211:45:232
2803799239,10cyclictest0-21swapper/211:45:222
2803799237,14cyclictest15213-21cron10:05:002
2803799234,12cyclictest27346irq/40-dwc2_hso08:40:132
2803799232,6cyclictest0-21swapper/210:27:172
2803799232,16cyclictest0-21swapper/210:58:172
2803799232,16cyclictest0-21swapper/210:50:372
2803799232,16cyclictest0-21swapper/210:50:362
2803799232,16cyclictest0-21swapper/210:39:182
28037992313,8cyclictest0-21swapper/208:00:342
28037992312,8cyclictest10409-21grep10:20:162
28022992314,6cyclictest0-21swapper/111:20:171
28022992313,4cyclictest0-21swapper/111:40:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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