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2025-03-21 - 08:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 50 highest latencies:
System rackcslot8s.osadl.org (updated Fri Mar 21, 2025 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
80226836,7sleep60-21swapper/619:07:186
132091630,6ptp4l0-21swapper/319:08:003
89002600,0sleep30-21swapper/319:25:003
1335915935,7phc2sys0-21swapper/419:09:594
85402560,0sleep50-21swapper/521:35:105
85725545,6sleep10-21swapper/119:07:531
1335915534,7phc2sys0-21swapper/019:07:380
94225443,6sleep20-21swapper/219:08:422
132091530,5ptp4l0-21swapper/719:05:357
73725231,7sleep50-21swapper/519:06:455
132091340,0ptp4l0-21swapper/321:15:173
132091320,7ptp4l0-21swapper/021:56:390
132091320,2ptp4l0-21swapper/300:01:313
132091320,1ptp4l9465-21ssh23:04:566
132091320,0ptp4l0-21swapper/619:29:116
132091320,0ptp4l0-21swapper/400:00:244
132091320,0ptp4l0-21swapper/322:04:263
132091310,0ptp4l0-21swapper/623:05:396
132091310,0ptp4l0-21swapper/621:21:366
132091310,0ptp4l0-21swapper/323:09:313
132091310,0ptp4l0-21swapper/023:20:200
132091300,1ptp4l101ktimersoftd/020:30:210
132091300,0ptp4l0-21swapper/721:47:497
132091300,0ptp4l0-21swapper/700:04:587
132091300,0ptp4l0-21swapper/421:36:094
132091300,0ptp4l0-21swapper/421:30:474
132091300,0ptp4l0-21swapper/323:10:133
132091300,0ptp4l0-21swapper/222:50:252
132091300,0ptp4l0-21swapper/123:40:171
132091300,0ptp4l0-21swapper/022:02:540
132091300,0ptp4l0-21swapper/000:24:410
132091300,0ptp4l0-21swapper/000:10:090
132091290,3ptp4l0-21swapper/322:57:003
132091290,2ptp4l0-21swapper/721:29:497
132091290,1ptp4l27340-21diskstats00:15:156
132091290,0ptp4l11153-21ssh23:52:264
132091290,0ptp4l0-21swapper/722:53:187
132091290,0ptp4l0-21swapper/421:55:474
132091290,0ptp4l0-21swapper/421:40:024
132091290,0ptp4l0-21swapper/421:26:414
132091290,0ptp4l0-21swapper/222:10:152
132091290,0ptp4l0-21swapper/200:16:442
132091290,0ptp4l0-21swapper/121:42:231
132091290,0ptp4l0-21swapper/120:30:191
132091290,0ptp4l0-21swapper/022:54:350
132091290,0ptp4l0-21swapper/021:42:440
132091280,0ptp4l0-21swapper/700:21:417
132091280,0ptp4l0-21swapper/522:54:235
132091280,0ptp4l0-21swapper/500:26:555
132091280,0ptp4l0-21swapper/322:46:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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