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2026-09-14 - 18:13

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 Mon Sep 14, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391630,5ptp4l0-21swapper/407:07:044
111391620,5ptp4l0-21swapper/007:08:270
319412610,0sleep00-21swapper/012:15:030
591826050,6sleep70-21swapper/707:09:137
594225443,6sleep20-21swapper/207:09:322
580725131,6sleep50-21swapper/507:07:425
111391510,5ptp4l0-21swapper/107:05:001
596724838,6sleep60-21swapper/607:09:456
566824636,6sleep30-21swapper/307:05:573
111391340,0ptp4l0-21swapper/111:00:171
111391330,0ptp4l0-21swapper/010:38:190
111391320,1ptp4l22366-21smartctl11:15:140
111391320,1ptp4l10282-21sh11:44:561
111391320,0ptp4l0-21swapper/409:20:184
111391310,0ptp4l0-21swapper/511:05:115
111391310,0ptp4l0-21swapper/010:10:270
111391300,4ptp4l0-21swapper/010:59:060
111391300,0ptp4l0-21swapper/410:35:224
111391300,0ptp4l0-21swapper/110:04:421
111391300,0ptp4l0-21swapper/011:12:230
111391300,0ptp4l0-21swapper/009:30:010
111391290,2ptp4l0-21swapper/709:35:197
111391290,0ptp4l0-21swapper/511:41:545
111391290,0ptp4l0-21swapper/509:20:535
111391290,0ptp4l0-21swapper/412:09:244
111391290,0ptp4l0-21swapper/411:21:404
111391290,0ptp4l0-21swapper/411:21:394
111391290,0ptp4l0-21swapper/410:09:544
111391290,0ptp4l0-21swapper/409:41:594
111391290,0ptp4l0-21swapper/408:10:214
111391290,0ptp4l0-21swapper/109:30:081
111391290,0ptp4l0-21swapper/010:51:030
111391290,0ptp4l0-21swapper/009:17:170
111391280,6ptp4l0-21swapper/410:53:024
111391280,4ptp4l0-21swapper/010:41:080
111391280,0ptp4l0-21swapper/612:17:126
111391280,0ptp4l0-21swapper/412:32:384
111391280,0ptp4l0-21swapper/412:25:154
111391280,0ptp4l0-21swapper/411:51:504
111391280,0ptp4l0-21swapper/411:30:344
111391280,0ptp4l0-21swapper/411:07:524
111391280,0ptp4l0-21swapper/410:41:364
111391280,0ptp4l0-21swapper/410:24:274
111391280,0ptp4l0-21swapper/410:00:044
111391280,0ptp4l0-21swapper/310:10:423
111391280,0ptp4l0-21swapper/212:24:522
111391280,0ptp4l0-21swapper/111:27:341
111391280,0ptp4l0-21swapper/109:48:321
111391280,0ptp4l0-21swapper/009:45:480
111391270,2ptp4l0-21swapper/010:21:250
111391270,1ptp4l0-21swapper/409:51:314
111391270,0ptp4l0-21swapper/412:12:344
111391270,0ptp4l0-21swapper/411:28:524
111391270,0ptp4l0-21swapper/411:03:504
111391270,0ptp4l0-21swapper/410:25:174
111391270,0ptp4l0-21swapper/410:15:374
111391270,0ptp4l0-21swapper/409:12:054
111391270,0ptp4l0-21swapper/408:20:204
111391270,0ptp4l0-21swapper/111:31:461
111391270,0ptp4l0-21swapper/111:23:291
111391270,0ptp4l0-21swapper/111:23:281
111391270,0ptp4l0-21swapper/109:58:191
111391270,0ptp4l0-21swapper/012:14:540
111391270,0ptp4l0-21swapper/010:16:280
111391270,0ptp4l0-21swapper/009:29:440
111391260,1ptp4l6879-21cpuspeed_turbos12:25:110
111391260,1ptp4l679-21irqrtprio11:30:156
111391260,0ptp4l0-21swapper/512:33:235
111391260,0ptp4l0-21swapper/510:14:015
111391260,0ptp4l0-21swapper/509:10:115
111391260,0ptp4l0-21swapper/412:39:494
111391260,0ptp4l0-21swapper/412:19:024
111391260,0ptp4l0-21swapper/411:55:194
111391260,0ptp4l0-21swapper/411:15:144
111391260,0ptp4l0-21swapper/409:58:334
111391260,0ptp4l0-21swapper/409:34:214
111391260,0ptp4l0-21swapper/112:11:401
111391260,0ptp4l0-21swapper/111:48:411
111391260,0ptp4l0-21swapper/110:19:241
111391260,0ptp4l0-21swapper/109:21:191
111391260,0ptp4l0-21swapper/107:45:101
111391260,0ptp4l0-21swapper/010:48:310
111391260,0ptp4l0-21swapper/010:30:000
111391250,1ptp4l26278-21df_inode10:35:151
111391250,1ptp4l16763-21memory08:40:154
111391250,1ptp4l16763-21memory08:40:144
111391250,0ptp4l0-21swapper/511:22:045
111391250,0ptp4l0-21swapper/511:22:045
111391250,0ptp4l0-21swapper/509:30:115
111391250,0ptp4l0-21swapper/508:55:105
111391250,0ptp4l0-21swapper/411:47:264
111391250,0ptp4l0-21swapper/411:12:174
111391250,0ptp4l0-21swapper/409:45:544
111391250,0ptp4l0-21swapper/409:05:154
111391250,0ptp4l0-21swapper/407:45:184
111391250,0ptp4l0-21swapper/211:30:012
111391250,0ptp4l0-21swapper/111:51:381
111391250,0ptp4l0-21swapper/110:14:011
111391250,0ptp4l0-21swapper/109:11:101
111391250,0ptp4l0-21swapper/108:00:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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