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2026-05-11 - 23:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #8

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 rack0slot8s.osadl.org (updated Mon May 11, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
283491960,86ptp4l0-21swapper/107:05:091
94080940,78rtkit-daemon0-21swapper/007:05:380
3003027153,9sleep40-21swapper/407:09:146
2995126958,9sleep70-21swapper/707:08:069
2992926856,10sleep110-21swapper/1107:07:453
2988226756,9sleep50-21swapper/507:07:037
2979326654,10sleep100-21swapper/1007:05:452
2984126554,9sleep60-21swapper/607:06:288
60072510,0sleep10-21swapper/107:15:231
234002490,0sleep60-21swapper/608:20:228
3044199239,13cyclictest0-21swapper/708:26:529
3042799202,13cyclictest0-21swapper/411:10:016
283491200,0ptp4l0-21swapper/111:30:231
92642190,0sleep10-21swapper/112:15:171
3044199173,9cyclictest0-21swapper/707:20:019
3044199172,11cyclictest14468-21kworker/u24:212:30:009
30432991715,1cyclictest0-21swapper/509:59:597
283491170,1ptp4l21-21ksoftirqd/111:15:151
137592170,1sleep10-21swapper/111:40:151
3044199161,12cyclictest25490-21kworker/u24:110:35:009
3040399163,8cyclictest0-21swapper/008:20:000
3040399162,8cyclictest0-21swapper/012:35:000
3040399162,8cyclictest0-21swapper/007:25:000
298852167,7sleep80-21swapper/807:07:0710
283491160,1ptp4l21-21ksoftirqd/108:45:171
283491160,1ptp4l21-21ksoftirqd/108:40:001
283491160,0ptp4l0-21swapper/111:50:141
3046099153,8cyclictest0-21swapper/1109:20:003
3046099152,9cyclictest0-21swapper/1111:10:253
3046099152,8cyclictest0-21swapper/1108:45:013
3044199153,7cyclictest0-21swapper/708:15:009
3044199152,8cyclictest0-21swapper/711:45:019
3044199152,7cyclictest0-21swapper/711:04:599
3040399153,7cyclictest0-21swapper/009:14:310
283491150,0ptp4l0-21swapper/110:20:001
283491150,0ptp4l0-21swapper/109:20:211
14242150,1sleep3321rcuc/310:40:235
3046099142,8cyclictest0-21swapper/1108:00:013
3046099141,8cyclictest0-21swapper/1110:20:003
3044199142,7cyclictest0-21swapper/709:10:259
3044199142,7cyclictest0-21swapper/707:40:019
30441991411,2cyclictest0-21swapper/712:00:179
3043699141,8cyclictest0-21swapper/611:00:018
3043299142,8cyclictest0-21swapper/507:15:007
3043299142,7cyclictest0-21swapper/507:20:017
3040399143,7cyclictest0-21swapper/008:10:010
3040399141,7cyclictest0-21swapper/009:20:010
283491140,1ptp4l21-21ksoftirqd/112:25:161
283491140,1ptp4l21-21ksoftirqd/111:55:181
283491140,0ptp4l0-21swapper/110:00:211
279902140,0sleep110-21swapper/1109:50:263
3044199132,7cyclictest5841-21kworker/u24:112:40:019
3044199132,7cyclictest0-21swapper/708:20:249
3044199132,6cyclictest0-21swapper/707:40:259
3044199132,6cyclictest0-21swapper/707:30:249
3043699134,6cyclictest0-21swapper/607:30:008
3043299132,8cyclictest0-21swapper/510:05:007
3040399132,7cyclictest0-21swapper/011:00:230
3040399132,6cyclictest0-21swapper/010:30:240
283491130,1ptp4l21-21ksoftirqd/112:32:571
283491130,1ptp4l21-21ksoftirqd/109:55:191
283491130,1ptp4l21-21ksoftirqd/109:45:151
283491130,1ptp4l21-21ksoftirqd/108:08:051
283491130,1ptp4l21-21ksoftirqd/107:57:171
283491130,1ptp4l11163-21aten2_r3power_c07:25:111
283491130,0ptp4l0-21swapper/111:20:231
283491130,0ptp4l0-21swapper/111:05:241
283491130,0ptp4l0-21swapper/110:10:201
283491130,0ptp4l0-21swapper/109:50:151
264691130,0getstats0-21swapper/212:15:114
3046099122,6cyclictest0-21swapper/1110:40:003
3045499122,6cyclictest0-21swapper/1010:20:242
3045499120,1cyclictest0-21swapper/1008:00:222
3045099122,6cyclictest0-21swapper/908:35:0011
3044199122,6cyclictest0-21swapper/710:50:259
3043699123,5cyclictest0-21swapper/611:50:018
3043299129,3cyclictest0-21swapper/510:25:197
3043299124,7cyclictest0-21swapper/512:36:067
3043299120,11cyclictest22460-21irqrtprio08:20:177
3042799122,7cyclictest0-21swapper/407:10:246
3042799122,6cyclictest0-21swapper/411:35:016
3042799121,6cyclictest0-21swapper/407:35:006
298182126,5sleep90-21swapper/907:06:0811
283491120,4ptp4l21-21ksoftirqd/108:30:131
283491120,3ptp4l31208-21sort07:50:141
283491120,1ptp4l21-21ksoftirqd/110:55:161
283491120,1ptp4l21-21ksoftirqd/109:26:011
283491120,1ptp4l21-21ksoftirqd/109:00:241
283491120,0ptp4l0-21swapper/110:37:091
283491120,0ptp4l0-21swapper/110:25:211
283491120,0ptp4l0-21swapper/109:30:191
283491120,0ptp4l0-21swapper/108:10:361
21792120,0sleep20-21swapper/209:20:014
3045099112,6cyclictest0-21swapper/912:20:0011
3045099112,6cyclictest0-21swapper/909:25:0011
3045099112,5cyclictest0-21swapper/908:10:0011
3045099110,10cyclictest8073-21cpuspeed08:45:1311
3044599118,2cyclictest0-21swapper/812:30:2710
3044199118,2cyclictest0-21swapper/708:50:129
3044199112,5cyclictest0-21swapper/712:05:009
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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