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2025-10-16 - 22:52

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 100 highest latencies:
System rackcslot8s.osadl.org (updated Thu Oct 16, 2025 12:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175022630,1sleep341-21ksoftirqd/312:33:123
114091630,5ptp4l0-21swapper/107:07:551
114091630,30ptp4l0-21swapper/207:07:592
3151026252,6sleep30-21swapper/307:06:243
3169526151,6sleep60-21swapper/607:08:516
3147726050,6sleep70-21swapper/707:06:037
114091600,5ptp4l0-21swapper/507:05:565
114091580,5ptp4l0-21swapper/007:09:360
294072560,0sleep60-21swapper/609:59:266
33502540,0sleep60-21swapper/608:25:156
263482540,0sleep10-21swapper/108:05:161
2120915433,7phc2sys0-21swapper/407:07:044
114091380,0ptp4l0-21swapper/511:55:015
114091380,0ptp4l0-21swapper/511:55:005
114091340,3ptp4l0-21swapper/110:10:141
114091340,0ptp4l0-21swapper/211:00:152
114091320,3ptp4l0-21swapper/110:23:191
114091320,3ptp4l0-21swapper/109:12:101
114091320,1ptp4l1848-21sh12:10:315
114091320,0ptp4l0-21swapper/212:01:372
114091310,3ptp4l0-21swapper/110:35:461
114091310,0ptp4l0-21swapper/612:25:226
114091310,0ptp4l0-21swapper/111:29:111
114091310,0ptp4l0-21swapper/012:21:130
114091300,0ptp4l0-21swapper/609:22:216
114091300,0ptp4l0-21swapper/609:22:216
114091300,0ptp4l0-21swapper/509:59:135
114091300,0ptp4l0-21swapper/509:14:195
114091300,0ptp4l0-21swapper/507:15:165
114091300,0ptp4l0-21swapper/111:45:491
114091290,2ptp4l0-21swapper/509:23:085
114091290,2ptp4l0-21swapper/509:23:075
114091290,0ptp4l0-21swapper/509:48:305
114091290,0ptp4l0-21swapper/508:25:105
114091290,0ptp4l0-21swapper/212:26:022
114091290,0ptp4l0-21swapper/209:35:112
114091290,0ptp4l0-21swapper/110:53:541
114091290,0ptp4l0-21swapper/110:40:391
114091290,0ptp4l0-21swapper/109:59:141
114091290,0ptp4l0-21swapper/011:01:340
185652280,0sleep30-21swapper/311:50:193
185652280,0sleep30-21swapper/311:50:183
11912280,0sleep00-21swapper/008:20:200
114091280,0ptp4l0-21swapper/512:20:115
114091280,0ptp4l0-21swapper/512:15:455
114091280,0ptp4l0-21swapper/512:04:345
114091280,0ptp4l0-21swapper/511:32:505
114091280,0ptp4l0-21swapper/510:32:195
114091280,0ptp4l0-21swapper/510:15:025
114091280,0ptp4l0-21swapper/509:40:415
114091280,0ptp4l0-21swapper/411:28:574
114091280,0ptp4l0-21swapper/410:46:274
114091280,0ptp4l0-21swapper/112:12:341
114091280,0ptp4l0-21swapper/111:01:031
114091280,0ptp4l0-21swapper/011:59:510
114091280,0ptp4l0-21swapper/010:42:320
114091280,0ptp4l0-21swapper/009:58:500
114091270,0ptp4l0-21swapper/711:35:317
114091270,0ptp4l0-21swapper/611:48:456
114091270,0ptp4l0-21swapper/611:20:506
114091270,0ptp4l0-21swapper/610:52:106
114091270,0ptp4l0-21swapper/510:08:305
114091270,0ptp4l0-21swapper/509:16:575
114091270,0ptp4l0-21swapper/212:32:412
114091270,0ptp4l0-21swapper/112:23:581
114091270,0ptp4l0-21swapper/112:07:271
114091270,0ptp4l0-21swapper/111:43:031
114091270,0ptp4l0-21swapper/109:37:331
114091270,0ptp4l0-21swapper/011:49:540
114091270,0ptp4l0-21swapper/011:39:410
114091270,0ptp4l0-21swapper/010:39:030
114091270,0ptp4l0-21swapper/010:11:440
114091260,3ptp4l0-21swapper/211:15:032
114091260,1ptp4l750-21grep07:10:171
114091260,0ptp4l0-21swapper/612:38:166
114091260,0ptp4l0-21swapper/611:54:206
114091260,0ptp4l0-21swapper/611:54:206
114091260,0ptp4l0-21swapper/609:26:596
114091260,0ptp4l0-21swapper/512:36:205
114091260,0ptp4l0-21swapper/511:04:025
114091260,0ptp4l0-21swapper/510:53:565
114091260,0ptp4l0-21swapper/510:03:155
114091260,0ptp4l0-21swapper/411:32:284
114091260,0ptp4l0-21swapper/409:59:534
114091260,0ptp4l0-21swapper/409:50:544
114091260,0ptp4l0-21swapper/209:26:572
114091260,0ptp4l0-21swapper/112:16:071
114091260,0ptp4l0-21swapper/111:13:481
114091260,0ptp4l0-21swapper/111:06:241
114091260,0ptp4l0-21swapper/110:25:191
114091260,0ptp4l0-21swapper/109:23:181
114091260,0ptp4l0-21swapper/109:23:171
114091260,0ptp4l0-21swapper/012:37:110
114091260,0ptp4l0-21swapper/011:23:350
114091260,0ptp4l0-21swapper/010:18:040
114091250,1ptp4l7514-21hddtemp_smartct08:35:135
114091250,1ptp4l17176-21memory08:55:150
114091250,0ptp4l5704-21cut07:20:141
114091250,0ptp4l0-21swapper/611:58:396
114091250,0ptp4l0-21swapper/609:30:146
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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