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2026-04-13 - 12:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Mon Apr 13, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86822238161,25sleep00-21swapper/019:07:590
88042230163,55sleep30-21swapper/319:09:363
86842202166,24sleep20-21swapper/219:08:022
85112201165,24sleep10-21swapper/119:05:471
1184421780,5sleep0892099cyclictest21:40:170
1085321370,5sleep0892099cyclictest00:05:170
1085321370,5sleep0892099cyclictest00:05:170
291512870,3sleep129152-21pmu-power21:05:231
8930997066,3cyclictest0-21swapper/222:41:222
318152520,1sleep30-21swapper/322:25:193
84962510,3sleep121-21rcuc/100:00:161
83872500,1sleep20-21swapper/220:20:132
201952500,1sleep00-21swapper/020:45:190
218672470,4sleep011-21rcuc/022:05:010
278492420,1sleep30-21swapper/319:50:163
139762410,4sleep013979-21timerandwakeup20:30:260
893799361,25cyclictest0-21swapper/323:30:233
893799350,16cyclictest0-21swapper/300:30:213
179022350,4sleep0892099cyclictest19:25:250
179022350,4sleep0892099cyclictest19:25:250
182842330,2sleep10-21swapper/123:10:121
893799321,19cyclictest0-21swapper/322:19:133
893799321,13cyclictest0-21swapper/323:08:093
143082320,4sleep230-21rcuc/221:45:212
143082320,4sleep230-21rcuc/221:45:212
892099317,11cyclictest31238-21perf23:40:000
893799300,12cyclictest0-21swapper/300:20:493
892099305,12cyclictest27811-21basename21:05:010
8920993014,14cyclictest7-21ksoftirqd/000:15:010
892099301,14cyclictest32205-21awk21:15:010
198672300,4sleep011-21rcuc/000:25:200
893799289,3cyclictest0-21swapper/322:10:213
893799281,14cyclictest827-21runrttasks20:42:213
893099280,12cyclictest0-21swapper/221:10:112
893099280,11cyclictest0-21swapper/220:34:472
893099280,10cyclictest0-21swapper/220:35:392
893099280,10cyclictest0-21swapper/220:35:392
8937992712,4cyclictest6967-21cat21:30:133
893799271,12cyclictest0-21swapper/321:40:573
893799270,5cyclictest0-21swapper/319:45:173
8930992721,3cyclictest7870-21grep22:45:162
893099270,3cyclictest0-21swapper/223:35:432
892099272,13cyclictest4848-21munin-run22:40:010
893799269,3cyclictest0-21swapper/322:35:013
893799269,3cyclictest0-21swapper/321:26:573
893799269,10cyclictest0-21swapper/322:06:293
893799261,14cyclictest0-21swapper/323:22:213
893799261,11cyclictest0-21swapper/300:08:373
893799261,11cyclictest0-21swapper/300:08:373
893799261,10cyclictest0-21swapper/319:27:213
893799261,10cyclictest0-21swapper/319:27:213
893799260,15cyclictest0-21swapper/323:56:053
893799260,12cyclictest0-21swapper/323:41:573
893799260,12cyclictest0-21swapper/300:19:173
893099260,9cyclictest0-21swapper/219:50:352
893099260,10cyclictest0-21swapper/223:15:472
175352261,3sleep117661-21users23:05:271
893799258,3cyclictest0-21swapper/319:24:093
893799258,3cyclictest0-21swapper/300:04:493
893799257,3cyclictest0-21swapper/323:01:493
893799257,3cyclictest0-21swapper/322:02:533
893799255,3cyclictest0-21swapper/322:22:173
893799251,9cyclictest0-21swapper/320:34:513
893799251,6cyclictest0-21swapper/321:49:093
893799251,6cyclictest0-21swapper/321:49:093
893799251,19cyclictest0-21swapper/300:27:243
893799251,10cyclictest0-21swapper/321:16:053
893099251,6cyclictest0-21swapper/222:10:172
893099250,11cyclictest0-21swapper/219:41:192
892599251,7cyclictest0-21swapper/120:22:501
892599251,6cyclictest0-21swapper/122:30:551
8925992513,3cyclictest0-21swapper/100:05:071
8925992513,3cyclictest0-21swapper/100:05:061
8925992511,12cyclictest17644-21kworker/u8:119:22:501
892599250,7cyclictest0-21swapper/123:57:021
892099251,12cyclictest20252-21awk23:15:010
892099251,12cyclictest10822-21munin-run21:40:010
276972250,4sleep230-21rcuc/222:15:232
893799248,3cyclictest14827-21/usr/sbin/munin20:35:253
893799248,3cyclictest14827-21/usr/sbin/munin20:35:253
893799246,3cyclictest0-21swapper/321:00:533
893799241,9cyclictest0-21swapper/322:54:533
893799241,9cyclictest0-21swapper/321:57:173
893799241,9cyclictest0-21swapper/300:13:093
893799241,14cyclictest25972-21cut23:25:213
893799241,10cyclictest0-21swapper/319:12:213
893799240,12cyclictest0-21swapper/319:16:253
893099241,5cyclictest0-21swapper/222:25:172
893099240,17cyclictest0-21swapper/223:04:192
893099240,10cyclictest0-21swapper/219:10:152
892599245,3cyclictest14188-21expr23:00:131
892599242,19cyclictest17317-21memory19:25:181
892599242,19cyclictest17317-21memory19:25:181
892599241,21cyclictest0-21swapper/121:44:141
892599241,20cyclictest21830-21perf22:05:011
892599240,7cyclictest0-21swapper/122:22:201
893799231,9cyclictest0-21swapper/323:19:173
8937992310,4cyclictest0-21swapper/323:35:063
893799230,7cyclictest0-21swapper/322:42:243
893099231,8cyclictest0-21swapper/221:29:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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