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2026-07-04 - 23:29

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 Sat Jul 04, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3168421120,0sleep20-21swapper/211:54:222
292972970,1sleep51068-21runrttasks11:08:095
111391680,5ptp4l0-21swapper/007:09:300
1047526838,6sleep70-21swapper/707:05:427
291232600,0sleep70-21swapper/711:07:407
41812590,0sleep50-21swapper/509:54:015
1062525948,7sleep20-21swapper/207:07:392
187452550,0sleep30-21swapper/307:25:003
1077525443,6sleep40-21swapper/407:09:324
1055725432,7sleep50-21swapper/507:06:455
1058125332,7sleep30-21swapper/307:06:583
1054225341,7sleep10-21swapper/107:06:331
1061124736,6sleep60-21swapper/607:07:276
111391320,0ptp4l0-21swapper/610:30:146
111391320,0ptp4l0-21swapper/610:30:136
111391320,0ptp4l0-21swapper/507:36:515
111391320,0ptp4l0-21swapper/507:30:195
111391320,0ptp4l0-21swapper/410:50:184
111391320,0ptp4l0-21swapper/111:35:191
111391320,0ptp4l0-21swapper/109:10:201
111391310,0ptp4l0-21swapper/411:40:194
111391310,0ptp4l0-21swapper/409:45:144
111391310,0ptp4l0-21swapper/310:18:253
111391300,3ptp4l0-21swapper/110:01:381
111391300,2ptp4l0-21swapper/712:25:067
111391300,2ptp4l0-21swapper/110:43:031
111391300,0ptp4l18159-21ssh12:18:274
111391300,0ptp4l0-21swapper/709:59:357
111391300,0ptp4l0-21swapper/511:46:485
111391300,0ptp4l0-21swapper/510:02:125
111391300,0ptp4l0-21swapper/509:58:545
111391300,0ptp4l0-21swapper/412:34:294
111391300,0ptp4l0-21swapper/110:37:041
111391300,0ptp4l0-21swapper/109:53:291
111391300,0ptp4l0-21swapper/107:36:431
111391300,0ptp4l0-21swapper/009:59:390
111391300,0ptp4l0-21swapper/009:47:040
111391290,1ptp4l0-21swapper/110:30:561
111391290,1ptp4l0-21swapper/110:30:561
111391290,0ptp4l0-21swapper/512:23:025
111391290,0ptp4l0-21swapper/510:53:435
111391290,0ptp4l0-21swapper/510:25:125
111391290,0ptp4l0-21swapper/411:33:314
111391290,0ptp4l0-21swapper/410:30:114
111391290,0ptp4l0-21swapper/410:30:104
111391290,0ptp4l0-21swapper/410:24:434
111391290,0ptp4l0-21swapper/112:03:221
111391280,8ptp4l29815-21ssh11:09:361
111391280,2ptp4l0-21swapper/512:12:375
111391280,2ptp4l0-21swapper/111:58:371
111391280,2ptp4l0-21swapper/109:48:321
111391280,1ptp4l25916-21diskstats09:40:113
111391280,0ptp4l0-21swapper/711:45:307
111391280,0ptp4l0-21swapper/709:43:217
111391280,0ptp4l0-21swapper/709:29:347
111391280,0ptp4l0-21swapper/709:11:257
111391280,0ptp4l0-21swapper/512:04:075
111391280,0ptp4l0-21swapper/511:51:225
111391280,0ptp4l0-21swapper/511:11:245
111391280,0ptp4l0-21swapper/509:45:315
111391280,0ptp4l0-21swapper/509:42:555
111391280,0ptp4l0-21swapper/411:55:004
111391280,0ptp4l0-21swapper/410:56:464
111391280,0ptp4l0-21swapper/410:12:484
111391280,0ptp4l0-21swapper/112:13:331
111391280,0ptp4l0-21swapper/112:06:421
111391280,0ptp4l0-21swapper/111:44:101
111391280,0ptp4l0-21swapper/111:32:271
111391270,4ptp4l0-21swapper/509:24:485
111391270,3ptp4l0-21swapper/711:27:117
111391270,3ptp4l0-21swapper/611:25:346
111391270,2ptp4l0-21swapper/509:12:465
111391270,1ptp4l0-21swapper/110:25:091
111391270,1ptp4l0-21swapper/109:26:501
111391270,0ptp4l0-21swapper/711:38:227
111391270,0ptp4l0-21swapper/710:18:257
111391270,0ptp4l0-21swapper/512:29:305
111391270,0ptp4l0-21swapper/511:35:015
111391270,0ptp4l0-21swapper/510:47:585
111391270,0ptp4l0-21swapper/510:22:405
111391270,0ptp4l0-21swapper/509:19:185
111391270,0ptp4l0-21swapper/412:27:174
111391270,0ptp4l0-21swapper/411:54:054
111391270,0ptp4l0-21swapper/408:20:014
111391270,0ptp4l0-21swapper/110:22:221
111391270,0ptp4l0-21swapper/109:42:541
111391260,3ptp4l0-21swapper/710:58:107
111391260,2ptp4l11225-21cpu10:45:121
111391260,1ptp4l4388-21munin-run08:05:004
111391260,0ptp4l0-21swapper/709:38:237
111391260,0ptp4l0-21swapper/512:09:155
111391260,0ptp4l0-21swapper/511:15:175
111391260,0ptp4l0-21swapper/510:56:055
111391260,0ptp4l0-21swapper/510:40:585
111391260,0ptp4l0-21swapper/411:36:274
111391260,0ptp4l0-21swapper/410:38:424
111391260,0ptp4l0-21swapper/409:40:384
111391260,0ptp4l0-21swapper/409:21:474
111391260,0ptp4l0-21swapper/409:18:554
111391260,0ptp4l0-21swapper/312:25:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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