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2025-12-09 - 20:46

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 Tue Dec 09, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991830,74ptp4l0-21swapper/107:05:221
185326856,10sleep50-21swapper/507:05:497
214726755,10sleep40-21swapper/407:09:496
184526755,10sleep100-21swapper/1007:05:432
208426655,9sleep110-21swapper/1107:09:093
208026555,8sleep70-21swapper/707:09:059
191826554,9sleep00-21swapper/007:06:460
206426453,9sleep60-21swapper/607:08:518
221542620,0sleep00-21swapper/012:25:200
92852590,0sleep110-21swapper/1107:55:253
88392590,0sleep100-21swapper/1007:55:242
283102590,0sleep90-21swapper/908:20:2511
54232540,0sleep30-21swapper/307:10:235
248999204,10cyclictest0-21swapper/210:50:014
249799191,17cyclictest0-21swapper/312:00:155
253799180,17cyclictest0-21swapper/1110:50:173
252899181,16cyclictest0-21swapper/909:05:2411
252899180,16cyclictest0-21swapper/911:15:2011
275991170,0ptp4l0-21swapper/112:05:131
252899174,8cyclictest0-21swapper/911:30:2311
252899172,9cyclictest0-21swapper/908:00:0111
252499174,7cyclictest0-21swapper/812:25:2610
251099170,16cyclictest0-21swapper/507:40:207
247999174,8cyclictest0-21swapper/012:35:010
2479991716,1cyclictest0-21swapper/010:10:000
304022160,0sleep00-21swapper/011:14:590
275991160,0ptp4l0-21swapper/111:10:161
253799163,8cyclictest0-21swapper/1110:45:003
252499160,2cyclictest0-21swapper/807:45:1610
250599163,8cyclictest0-21swapper/409:55:246
247999163,8cyclictest0-21swapper/008:05:010
247999161,10cyclictest11388-21kworker/u24:108:30:000
247999160,10cyclictest0-21swapper/007:15:240
116632160,1sleep3321rcuc/310:50:005
60382150,0sleep20-21swapper/209:15:254
275991150,1ptp4l21-21ksoftirqd/110:05:301
275991150,1ptp4l21-21ksoftirqd/109:55:251
275991150,0ptp4l0-21swapper/111:20:281
275991150,0ptp4l0-21swapper/110:50:171
275991150,0ptp4l0-21swapper/109:50:151
275991150,0ptp4l0-21swapper/109:15:211
253799150,3cyclictest0-21swapper/1107:30:163
252899152,8cyclictest0-21swapper/911:55:0011
252899152,8cyclictest0-21swapper/907:40:0111
252499152,9cyclictest11388-21kworker/u24:109:35:0010
252499152,9cyclictest0-21swapper/810:05:0010
251099151,3cyclictest0-21swapper/510:25:197
249799153,7cyclictest0-21swapper/312:40:015
248599153,7cyclictest0-21swapper/110:05:001
247999153,8cyclictest0-21swapper/007:40:000
247999152,8cyclictest0-21swapper/011:55:000
247999152,7cyclictest0-21swapper/008:25:010
102072150,0sleep110-21swapper/1110:05:153
275991140,2ptp4l5532-21grep07:50:231
275991140,0ptp4l0-21swapper/107:10:181
252899142,7cyclictest0-21swapper/908:40:0111
252899141,7cyclictest0-21swapper/908:55:0011
251999143,7cyclictest0-21swapper/709:19:309
251099141,8cyclictest0-21swapper/512:05:007
250599142,7cyclictest0-21swapper/412:25:006
249799142,8cyclictest0-21swapper/307:25:015
249799142,7cyclictest0-21swapper/312:00:015
249799142,7cyclictest0-21swapper/309:15:005
249799142,7cyclictest0-21swapper/308:15:015
249799140,8cyclictest0-21swapper/310:40:005
249799140,8cyclictest0-21swapper/310:15:005
248999143,7cyclictest0-21swapper/207:35:254
247999143,7cyclictest0-21swapper/008:00:010
235262140,0sleep70-21swapper/710:20:259
275991130,5ptp4l0-21swapper/108:10:141
275991130,1ptp4l21-21ksoftirqd/109:22:021
275991130,1ptp4l21-21ksoftirqd/108:01:041
275991130,0ptp4l0-21swapper/107:30:241
253799133,6cyclictest0-21swapper/1107:50:013
253799132,7cyclictest0-21swapper/1110:00:003
253399131,7cyclictest0-21swapper/1012:20:212
252899132,6cyclictest0-21swapper/912:40:0011
252499132,7cyclictest0-21swapper/808:45:0110
252499131,9cyclictest11388-21kworker/u24:108:10:0010
251999133,7cyclictest0-21swapper/708:20:019
251999133,6cyclictest0-21swapper/712:00:239
251999132,6cyclictest0-21swapper/710:50:009
251599131,7cyclictest0-21swapper/611:35:008
250599132,7cyclictest0-21swapper/407:50:216
249799133,7cyclictest0-21swapper/309:05:005
249799133,6cyclictest0-21swapper/311:50:275
248599134,5cyclictest0-21swapper/109:15:001
247999133,6cyclictest0-21swapper/010:25:000
247999132,7cyclictest0-21swapper/009:40:280
247999131,8cyclictest0-21swapper/009:05:010
323622121,8sleep80-21swapper/807:05:1710
275991120,5ptp4l21-21ksoftirqd/112:30:231
275991120,3ptp4l8664-21latency_hist08:40:011
275991120,1ptp4l21-21ksoftirqd/112:15:121
275991120,1ptp4l21-21ksoftirqd/109:25:241
275991120,0ptp4l0-21swapper/112:02:301
275991120,0ptp4l0-21swapper/111:45:221
275991120,0ptp4l0-21swapper/111:15:491
275991120,0ptp4l0-21swapper/107:27:251
253799122,7cyclictest0-21swapper/1109:05:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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