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2025-11-16 - 03:35

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 Sun Nov 16, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2759911030,93ptp4l0-21swapper/119:06:221
94980980,93rtkit-daemon0-21swapper/419:06:216
156262700,0sleep20-21swapper/200:15:274
227926654,10sleep50-21swapper/519:08:337
223226655,9sleep00-21swapper/019:07:530
222426555,7sleep70-21swapper/719:07:489
218926554,9sleep110-21swapper/1119:07:153
224226453,9sleep100-21swapper/1019:08:022
107112640,0sleep60-21swapper/621:25:008
205926252,8sleep60-21swapper/619:05:348
320742590,0sleep100-21swapper/1021:50:202
281199192,12cyclictest31419-21kworker/u24:020:10:013
278699193,9cyclictest0-21swapper/621:45:008
119832190,0sleep60-21swapper/621:25:128
279199183,9cyclictest0-21swapper/722:00:019
277799180,17cyclictest0-21swapper/421:00:186
275699182,10cyclictest0-21swapper/019:15:000
264592180,0sleep60-21swapper/622:25:198
278699173,8cyclictest0-21swapper/621:15:018
278299170,16cyclictest0-21swapper/520:35:217
275991170,0ptp4l0-21swapper/121:40:181
2807991615,1cyclictest0-21swapper/1019:50:232
279199162,8cyclictest0-21swapper/722:22:409
277399162,8cyclictest0-21swapper/323:10:015
276399163,8cyclictest0-21swapper/119:20:001
275991160,1ptp4l0-21swapper/122:40:161
275991160,0ptp4l0-21swapper/123:00:181
275991160,0ptp4l0-21swapper/122:15:251
275991160,0ptp4l0-21swapper/122:00:161
275991160,0ptp4l0-21swapper/119:55:211
275699163,7cyclictest0-21swapper/000:25:000
281199152,8cyclictest0-21swapper/1122:20:003
281199152,8cyclictest0-21swapper/1119:20:253
280299152,7cyclictest0-21swapper/923:45:0011
280299152,7cyclictest0-21swapper/920:05:0011
279199152,8cyclictest0-21swapper/723:35:279
278699153,7cyclictest0-21swapper/622:55:008
277799152,9cyclictest0-21swapper/420:50:256
276399152,8cyclictest0-21swapper/123:20:011
276399152,8cyclictest0-21swapper/119:40:001
275991150,0ptp4l0-21swapper/122:35:261
275991150,0ptp4l0-21swapper/121:55:231
199132150,0sleep70-21swapper/719:30:149
279199143,7cyclictest0-21swapper/719:55:019
279199142,10cyclictest13848-21kworker/u24:219:40:009
278299142,8cyclictest0-21swapper/520:45:007
276399143,7cyclictest0-21swapper/120:35:271
276399142,8cyclictest0-21swapper/121:35:011
275991140,6ptp4l21-21ksoftirqd/120:30:271
275991140,0ptp4l0-21swapper/120:00:161
275699144,7cyclictest0-21swapper/022:25:000
294772130,0sleep10-21swapper/123:55:011
281199133,6cyclictest0-21swapper/1121:50:013
280799132,7cyclictest0-21swapper/1022:00:272
280799132,7cyclictest0-21swapper/1000:10:302
279199132,7cyclictest0-21swapper/723:10:259
279199132,7cyclictest0-21swapper/720:20:009
279199132,7cyclictest0-21swapper/720:15:019
279199132,6cyclictest0-21swapper/723:25:289
279199132,6cyclictest0-21swapper/723:05:019
279199131,8cyclictest31419-21kworker/u24:020:40:019
279199131,7cyclictest0-21swapper/723:30:249
278699132,7cyclictest0-21swapper/623:55:008
278699132,7cyclictest0-21swapper/622:35:268
278299133,6cyclictest0-21swapper/522:35:007
278299133,6cyclictest0-21swapper/520:05:257
278299132,7cyclictest0-21swapper/523:50:007
278299131,7cyclictest31419-21kworker/u24:021:30:017
276399131,8cyclictest0-21swapper/121:15:011
275991130,1ptp4l4373-21df_inode21:15:181
275991130,1ptp4l21-21ksoftirqd/123:27:341
275991130,1ptp4l21-21ksoftirqd/121:39:341
275991130,1ptp4l21-21ksoftirqd/119:30:181
275991130,0ptp4l0-21swapper/123:48:071
275991130,0ptp4l0-21swapper/122:50:151
275991130,0ptp4l0-21swapper/122:05:251
275991130,0ptp4l0-21swapper/121:45:351
275699132,7cyclictest0-21swapper/000:25:000
275699130,8cyclictest0-21swapper/020:00:010
262422130,0sleep30-21swapper/321:45:015
239292130,0sleep90-21swapper/900:30:0011
281199122,6cyclictest0-21swapper/1120:25:003
281199121,7cyclictest0-21swapper/1122:25:273
281199121,5cyclictest0-21swapper/1120:35:003
280299121,6cyclictest0-21swapper/922:05:0011
279199122,6cyclictest0-21swapper/721:45:269
279199121,7cyclictest0-21swapper/723:40:009
279199120,7cyclictest0-21swapper/723:00:019
278699122,7cyclictest0-21swapper/621:10:008
278699122,6cyclictest0-21swapper/623:05:018
278699122,6cyclictest0-21swapper/622:35:008
278699122,6cyclictest0-21swapper/621:55:008
278699121,7cyclictest0-21swapper/600:30:008
278299122,6cyclictest0-21swapper/522:50:007
278299122,6cyclictest0-21swapper/521:20:027
278299122,6cyclictest0-21swapper/520:05:007
277799122,6cyclictest0-21swapper/423:50:256
277399122,7cyclictest0-21swapper/300:05:005
277399121,7cyclictest0-21swapper/300:20:005
275991120,5ptp4l21-21ksoftirqd/122:20:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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