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2025-12-11 - 06:17

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 Thu Dec 11, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991980,88ptp4l0-21swapper/119:06:451
2000928270,9sleep100-21swapper/1019:05:182
1886826965,2sleep60-21swapper/619:05:138
2193726755,10sleep50-21swapper/519:08:247
2191526655,9sleep110-21swapper/1119:08:063
2193026554,9sleep00-21swapper/019:08:190
2193626452,10sleep40-21swapper/419:08:236
2199126049,9sleep70-21swapper/719:09:149
315062580,0sleep60-21swapper/622:50:138
244992530,0sleep70-21swapper/719:50:189
2238099232,16cyclictest0-21swapper/421:50:016
2238099200,6cyclictest0-21swapper/419:55:006
2240899192,6cyclictest0-21swapper/1022:25:012
275991170,0ptp4l0-21swapper/122:50:011
2239599173,8cyclictest0-21swapper/720:10:009
2239599173,8cyclictest0-21swapper/720:10:009
22395991713,2cyclictest0-21swapper/721:50:189
2238999173,8cyclictest0-21swapper/620:20:008
2238599170,16cyclictest0-21swapper/522:10:187
22380991713,2cyclictest0-21swapper/422:10:186
304902160,0sleep1201rcuc/123:30:121
275991160,1ptp4l21-21ksoftirqd/100:15:171
275991160,0ptp4l0-21swapper/122:25:171
275991160,0ptp4l0-21swapper/100:30:151
2239999162,9cyclictest0-21swapper/800:40:0010
2239599164,7cyclictest0-21swapper/723:20:019
2239599163,9cyclictest7194-21kworker/u24:023:30:029
2239599162,8cyclictest0-21swapper/700:25:009
2238999160,3cyclictest0-21swapper/619:20:188
2236799164,8cyclictest0-21swapper/220:20:014
2236799164,8cyclictest0-21swapper/220:20:014
2236799163,9cyclictest0-21swapper/222:45:014
2236799163,8cyclictest0-21swapper/200:00:014
2236799162,9cyclictest0-21swapper/219:45:004
2236399163,7cyclictest0-21swapper/121:35:011
2235899165,7cyclictest0-21swapper/021:25:010
2235899160,2cyclictest0-21swapper/021:10:160
123432160,0sleep80-21swapper/822:25:1210
275991150,0ptp4l0-21swapper/121:10:151
275991150,0ptp4l0-21swapper/119:20:181
275991150,0ptp4l0-21swapper/100:10:211
2239599153,7cyclictest0-21swapper/719:15:009
2239599152,8cyclictest0-21swapper/720:00:009
2239599150,2cyclictest0-21swapper/721:20:189
2238999152,8cyclictest0-21swapper/621:10:008
2238599154,10cyclictest0-21swapper/523:10:017
2238599152,8cyclictest0-21swapper/521:20:017
2238099150,10cyclictest0-21swapper/422:05:016
2236399153,7cyclictest0-21swapper/120:50:011
2236399153,7cyclictest0-21swapper/119:45:001
2236399152,8cyclictest0-21swapper/120:10:001
2236399152,8cyclictest0-21swapper/120:10:001
2236399151,7cyclictest0-21swapper/123:55:001
2235899153,7cyclictest0-21swapper/021:35:000
275991140,1ptp4l21-21ksoftirqd/121:00:141
275991140,1ptp4l21-21ksoftirqd/120:10:201
275991140,0ptp4l0-21swapper/122:00:181
275991140,0ptp4l0-21swapper/121:20:211
275991140,0ptp4l0-21swapper/119:55:221
2239999142,7cyclictest0-21swapper/821:45:0010
2239999142,7cyclictest0-21swapper/800:30:0010
22399991411,2cyclictest24824-21turbostat22:00:0010
2239599143,7cyclictest0-21swapper/721:00:249
2239599141,8cyclictest0-21swapper/723:00:249
2239599140,8cyclictest0-21swapper/700:39:559
2238999142,7cyclictest7194-21kworker/u24:020:45:008
2238999142,7cyclictest7194-21kworker/u24:020:45:008
2238999142,7cyclictest0-21swapper/621:30:268
2238599143,7cyclictest0-21swapper/522:55:017
2238599142,7cyclictest0-21swapper/523:50:007
2238099142,7cyclictest0-21swapper/421:05:016
2238099141,7cyclictest0-21swapper/420:30:246
2238099141,7cyclictest0-21swapper/420:30:246
2236799142,8cyclictest0-21swapper/223:10:244
2236799142,8cyclictest0-21swapper/200:35:004
22367991411,2cyclictest0-21swapper/223:25:184
2236399143,7cyclictest0-21swapper/122:50:011
2236399143,7cyclictest0-21swapper/100:00:001
2236399142,8cyclictest0-21swapper/120:55:011
2236399142,7cyclictest0-21swapper/121:00:001
2235899143,6cyclictest0-21swapper/022:00:010
2235899142,8cyclictest0-21swapper/019:25:250
275991130,1ptp4l21-21ksoftirqd/123:48:511
275991130,0ptp4l0-21swapper/120:15:201
22408991310,3cyclictest0-21swapper/1022:10:182
2239999132,7cyclictest0-21swapper/820:30:0110
2239999132,7cyclictest0-21swapper/820:30:0010
2239999132,6cyclictest0-21swapper/822:15:0110
2239599133,6cyclictest0-21swapper/722:25:029
2239599132,7cyclictest0-21swapper/723:15:019
2239599130,12cyclictest0-21swapper/720:49:559
2238999132,7cyclictest0-21swapper/600:05:008
2238999132,6cyclictest0-21swapper/600:10:008
2238599132,6cyclictest0-21swapper/521:45:217
2236399132,6cyclictest0-21swapper/122:20:011
2235899134,5cyclictest0-21swapper/000:27:170
2235899132,7cyclictest0-21swapper/022:10:010
275991120,3ptp4l23536-21timerwakeupswit20:30:241
275991120,3ptp4l23536-21timerwakeupswit20:30:241
275991120,1ptp4l21-21ksoftirqd/120:20:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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