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2025-12-08 - 07:41

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 Dec 08, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991930,83ptp4l0-21swapper/119:07:551
94980830,78rtkit-daemon0-21swapper/1019:09:112
1108426756,9sleep00-21swapper/019:08:230
1092826754,10sleep50-21swapper/519:06:167
906126654,9sleep60-21swapper/619:05:178
1097526452,9sleep110-21swapper/1119:06:583
1115826351,10sleep70-21swapper/719:09:309
322162610,0sleep60-21swapper/623:05:198
244862610,0sleep20-21swapper/222:55:134
244862610,0sleep20-21swapper/222:55:134
194802600,0sleep110-21swapper/1123:30:143
1107325746,8sleep40-21swapper/419:08:156
87032560,0sleep60-21swapper/620:25:258
1156199252,7cyclictest0-21swapper/422:55:006
1156199252,7cyclictest0-21swapper/422:55:006
1156199212,15cyclictest0-21swapper/423:50:016
1156199202,14cyclictest0-21swapper/423:25:006
1154399203,11cyclictest0-21swapper/021:55:000
1157999182,10cyclictest0-21swapper/822:10:0010
54232170,0sleep00-21swapper/020:23:190
275991170,0ptp4l0-21swapper/100:00:191
1158399172,6cyclictest0-21swapper/900:05:0111
1155699173,8cyclictest0-21swapper/320:05:005
1155699173,8cyclictest0-21swapper/319:15:005
1155299173,9cyclictest0-21swapper/223:15:014
1155299172,9cyclictest0-21swapper/223:20:014
1155299172,10cyclictest0-21swapper/223:50:004
1155299171,2cyclictest0-21swapper/220:30:164
1155299171,2cyclictest0-21swapper/219:30:204
1154399171,12cyclictest25522-21kworker/u24:123:25:010
275991160,0ptp4l0-21swapper/119:10:251
121492160,0sleep00-21swapper/019:50:150
1155699163,8cyclictest0-21swapper/300:20:015
1155699162,9cyclictest0-21swapper/300:10:015
1155299162,9cyclictest0-21swapper/221:00:004
1155299162,9cyclictest0-21swapper/200:40:014
1155299162,10cyclictest0-21swapper/219:45:004
1154399162,9cyclictest0-21swapper/023:15:000
1154399162,8cyclictest0-21swapper/019:30:000
275991150,1ptp4l21-21ksoftirqd/122:45:251
275991150,1ptp4l21-21ksoftirqd/122:45:251
211172150,0sleep20-21swapper/219:20:144
191491150,0getstats0-21swapper/119:35:301
1158999158,4cyclictest0-21swapper/1019:35:002
1158399151,7cyclictest0-21swapper/923:00:2511
1158399151,7cyclictest0-21swapper/923:00:2511
1157999152,8cyclictest0-21swapper/821:40:0010
1157099152,7cyclictest0-21swapper/622:35:258
1157099152,7cyclictest0-21swapper/622:35:258
1155699153,7cyclictest0-21swapper/320:35:005
1155699153,7cyclictest0-21swapper/320:30:005
1155699152,8cyclictest0-21swapper/320:00:005
1155699152,8cyclictest0-21swapper/300:00:015
1155299152,7cyclictest0-21swapper/222:10:004
1154399153,8cyclictest0-21swapper/022:55:010
1154399153,8cyclictest0-21swapper/022:55:010
1154399153,8cyclictest0-21swapper/019:35:000
1154399152,8cyclictest0-21swapper/000:30:010
108792157,6sleep80-21swapper/819:05:3110
275991140,1ptp4l21-21ksoftirqd/121:30:171
275991140,1ptp4l21-21ksoftirqd/120:25:221
1155699142,8cyclictest0-21swapper/322:30:255
1155699142,7cyclictest0-21swapper/319:10:005
1155699142,7cyclictest0-21swapper/300:12:425
1154399143,7cyclictest0-21swapper/023:35:000
275991130,1ptp4l21-21ksoftirqd/123:58:211
275991130,1ptp4l21-21ksoftirqd/121:52:191
275991130,1ptp4l21-21ksoftirqd/120:37:471
275991130,1ptp4l21-21ksoftirqd/119:27:391
275991130,0ptp4l0-21swapper/122:58:381
275991130,0ptp4l0-21swapper/122:58:381
275991130,0ptp4l0-21swapper/100:33:551
1158999132,6cyclictest0-21swapper/1021:00:252
1157999133,6cyclictest0-21swapper/800:25:2710
1157999131,7cyclictest0-21swapper/820:55:0010
1157999130,8cyclictest0-21swapper/820:20:2710
1157999130,12cyclictest0-21swapper/822:35:0010
1157099130,7cyclictest0-21swapper/621:45:008
1156199132,7cyclictest0-21swapper/422:30:006
1156199131,7cyclictest0-21swapper/423:50:256
1155699133,7cyclictest0-21swapper/323:55:005
1155699133,7cyclictest0-21swapper/323:20:015
1155699132,7cyclictest0-21swapper/322:25:005
1155699132,6cyclictest0-21swapper/322:45:015
1155699132,6cyclictest0-21swapper/322:45:015
1154799133,6cyclictest0-21swapper/122:35:011
1154799133,6cyclictest0-21swapper/122:35:011
1154799132,7cyclictest0-21swapper/121:15:001
1154799132,7cyclictest0-21swapper/120:40:291
1154799130,8cyclictest0-21swapper/120:05:001
1154399132,6cyclictest0-21swapper/022:45:010
1154399132,6cyclictest0-21swapper/022:45:010
1154399132,6cyclictest0-21swapper/021:35:000
275991120,1ptp4l21-21ksoftirqd/119:44:051
275991120,0ptp4l0-21swapper/123:27:531
275991120,0ptp4l0-21swapper/123:05:201
275991120,0ptp4l0-21swapper/122:50:011
275991120,0ptp4l0-21swapper/122:50:011
275991120,0ptp4l0-21swapper/122:20:231
275991120,0ptp4l0-21swapper/121:47:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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