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2026-09-19 - 12:35

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 Sep 19, 2026 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2461199663,49cyclictest27510-21ssh00:20:111
2461199654,47cyclictest520-21ssh00:05:131
24633995840,13cyclictest35966irq/58-eth021:25:113
24622995417,20cyclictest27-21ksoftirqd/200:25:132
2460099521,37cyclictest26383-21ssh21:55:120
2463399476,24cyclictest35966irq/58-eth023:25:123
2463399448,21cyclictest35966irq/58-eth023:50:133
24633994433,7cyclictest35966irq/58-eth000:35:153
2463399441,27cyclictest35966irq/58-eth020:20:123
2461199441,34cyclictest9579-21ssh00:10:121
2461199441,34cyclictest9579-21ssh00:10:121
24633994321,17cyclictest35966irq/58-eth023:40:123
24611994223,14cyclictest21-21ksoftirqd/121:40:131
2463399414,22cyclictest35966irq/58-eth000:20:123
2462299412,28cyclictest527-21sh00:05:142
2461199403,25cyclictest5979-21ssh23:50:131
2463399382,22cyclictest35966irq/58-eth022:55:123
2460099387,23cyclictest6479-21kworker/u8:021:15:140
2463399372,24cyclictest35966irq/58-eth022:10:133
2462299378,21cyclictest630-21Async09:36:312
24611993710,17cyclictest21-21ksoftirqd/120:20:121
24600993721,10cyclictest0-21swapper/022:54:240
24622993611,12cyclictest11968-21sh22:05:132
2461199362,23cyclictest23088-21ssh21:35:141
24633993517,11cyclictest35966irq/58-eth021:10:133
2462299351,24cyclictest25901-21ssh23:25:132
24633993413,11cyclictest35966irq/58-eth021:15:143
2462299346,18cyclictest27346irq/40-dwc2_hso19:35:152
2462299341,20cyclictest15036-21ssh23:55:152
24633993213,13cyclictest35966irq/58-eth020:30:133
2460099323,21cyclictest24431-21ssh22:30:130
2462299312,22cyclictest20510-21ssh21:32:232
2461199313,4cyclictest131rcu_preempt23:45:121
24611993122,4cyclictest31457-21ssh23:10:131
2461199312,21cyclictest14924-21/usr/sbin/munin19:30:211
2460099318,9cyclictest12-21ksoftirqd/023:40:230
2460099312,22cyclictest28137-21ssh22:13:250
2463399304,15cyclictest35966irq/58-eth000:15:133
2463399304,15cyclictest35966irq/58-eth000:15:133
2463399303,20cyclictest35966irq/58-eth021:20:123
2462299302,21cyclictest0-21swapper/222:10:142
2463399293,15cyclictest35966irq/58-eth021:55:113
24633992914,9cyclictest35966irq/58-eth022:30:133
2462299291,16cyclictest4504-21ssh22:55:132
2461199292,21cyclictest21-21ksoftirqd/122:55:121
2461199290,25cyclictest17439-21ssh21:50:131
2460099292,19cyclictest5235-21memory19:20:210
2460099292,19cyclictest29255-21sed19:45:210
2462299282,15cyclictest13454-21ssh23:00:132
2462299282,11cyclictest0-21swapper/219:55:142
2462299281,20cyclictest27346irq/40-dwc2_hso20:00:122
2461199282,20cyclictest15724-21ssh21:48:241
2463399277,12cyclictest35966irq/58-eth000:30:133
2463399274,10cyclictest35966irq/58-eth023:35:153
2463399272,16cyclictest35966irq/58-eth021:35:143
24633992710,12cyclictest35966irq/58-eth021:45:143
2462299273,9cyclictest0-21swapper/223:19:252
2462299272,16cyclictest27346irq/40-dwc2_hso00:20:132
2461199272,19cyclictest2990-21ssh22:00:131
2460099273,18cyclictest29412-21ssh23:45:140
2460099273,17cyclictest7940-21sh23:15:130
2460099273,16cyclictest22102-21ssh00:35:160
2463399262,18cyclictest0-21swapper/322:26:243
2462299262,16cyclictest5668-21find21:05:122
24611992614,6cyclictest10257-21diskmemload00:25:151
24600992615,6cyclictest0-21swapper/020:45:140
2460099261,19cyclictest5050-21ssh21:25:120
24600992610,8cyclictest0-21swapper/000:04:530
24633992512,8cyclictest33-21ksoftirqd/321:31:153
2462299252,16cyclictest0-21swapper/219:25:212
2462299251,8cyclictest688466ssh21:43:302
2462299251,6cyclictest2320666ssh21:15:252
24622992512,10cyclictest8236-21sshd23:31:392
2462299250,13cyclictest4548-21timerandwakeup21:00:272
2462299250,13cyclictest4548-21timerandwakeup21:00:272
2461199255,12cyclictest11447-21ssh23:35:151
2461199251,18cyclictest20929-21ssh22:10:141
2460099254,17cyclictest12-21ksoftirqd/022:20:120
24600992516,5cyclictest151rcuc/022:05:150
24600992512,7cyclictest0-21swapper/021:20:130
24600992511,7cyclictest0-21swapper/019:50:100
24633992410,10cyclictest0-21swapper/300:10:283
24633992410,10cyclictest0-21swapper/300:10:273
2462299246,11cyclictest27346irq/40-dwc2_hso20:05:132
2462299242,14cyclictest0-21swapper/219:45:132
2462299241,6cyclictest261166rm22:53:162
2462299241,6cyclictest2300066rm22:28:472
2462299241,6cyclictest1167366ssh23:51:232
24622992412,9cyclictest0-21swapper/220:10:192
2462299241,19cyclictest0-21swapper/223:05:132
2462299241,13cyclictest18697-21ssh00:15:162
2462299241,13cyclictest18697-21ssh00:15:162
2462299240,21cyclictest6470-21ls22:00:232
2461199242,17cyclictest2481-21ssh23:30:151
2461199242,16cyclictest10652-21ssh21:10:141
2461199241,18cyclictest5677-21apt-get21:05:121
2460099242,16cyclictest19065-21ntp_192.168.11422:25:240
24600992417,4cyclictest2981-21ssh23:10:290
2460099241,17cyclictest17448-21ssh21:50:130
24600992411,7cyclictest0-21swapper/000:05:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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