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2026-07-22 - 05:51

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 Wed Jul 22, 2026 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246622940,0sleep70-21swapper/723:55:177
111391640,5ptp4l0-21swapper/619:05:056
111391610,30ptp4l0-21swapper/119:05:371
111391600,5ptp4l0-21swapper/219:05:092
3268725949,6sleep70-21swapper/719:05:057
111391570,5ptp4l0-21swapper/519:07:185
200325241,6sleep40-21swapper/419:07:114
192024837,7sleep30-21swapper/319:06:063
193524735,7sleep00-21swapper/019:06:180
111391350,1ptp4l10087-21cpuspeed_turbos20:35:104
111391330,1ptp4l14239-21ssh22:17:594
111391330,1ptp4l14239-21ssh22:17:594
111391320,0ptp4l0-21swapper/422:04:424
111391310,0ptp4l0-21swapper/521:49:365
111391310,0ptp4l0-21swapper/519:40:185
111391310,0ptp4l0-21swapper/422:52:464
111391310,0ptp4l0-21swapper/422:32:384
111391310,0ptp4l0-21swapper/422:10:584
111391310,0ptp4l0-21swapper/123:44:441
111391310,0ptp4l0-21swapper/122:46:201
111391310,0ptp4l0-21swapper/019:30:140
111391300,0ptp4l25622-21diskmemload22:19:420
111391300,0ptp4l25622-21diskmemload22:19:420
111391300,0ptp4l0-21swapper/523:20:145
111391300,0ptp4l0-21swapper/500:22:185
111391300,0ptp4l0-21swapper/423:27:054
111391300,0ptp4l0-21swapper/123:35:201
111391300,0ptp4l0-21swapper/122:52:451
111391300,0ptp4l0-21swapper/121:34:001
111391300,0ptp4l0-21swapper/023:25:170
111391300,0ptp4l0-21swapper/000:20:180
111391290,1ptp4l25622-21diskmemload00:32:370
111391290,0ptp4l0-21swapper/600:37:516
111391290,0ptp4l0-21swapper/523:39:595
111391290,0ptp4l0-21swapper/422:26:174
111391290,0ptp4l0-21swapper/421:20:324
111391290,0ptp4l0-21swapper/400:23:164
111391290,0ptp4l0-21swapper/100:00:151
111391280,3ptp4l241ktimersoftd/122:02:401
111391280,0ptp4l0-21swapper/521:23:045
111391280,0ptp4l0-21swapper/500:39:195
111391280,0ptp4l0-21swapper/423:30:564
111391280,0ptp4l0-21swapper/121:16:141
111391280,0ptp4l0-21swapper/023:55:250
111391280,0ptp4l0-21swapper/023:07:170
111391280,0ptp4l0-21swapper/022:56:300
111391280,0ptp4l0-21swapper/022:04:430
111391280,0ptp4l0-21swapper/021:20:180
111391280,0ptp4l0-21swapper/000:00:040
2522992725,1cyclictest24485-21turbostat21:50:007
111391270,0ptp4l0-21swapper/523:46:165
111391270,0ptp4l0-21swapper/521:32:215
111391270,0ptp4l0-21swapper/500:16:185
111391270,0ptp4l0-21swapper/500:13:265
111391270,0ptp4l0-21swapper/423:16:254
111391270,0ptp4l0-21swapper/423:10:594
111391270,0ptp4l0-21swapper/422:55:234
111391270,0ptp4l0-21swapper/422:09:074
111391270,0ptp4l0-21swapper/421:35:484
111391270,0ptp4l0-21swapper/421:17:444
111391270,0ptp4l0-21swapper/022:33:050
111391270,0ptp4l0-21swapper/022:29:020
111391270,0ptp4l0-21swapper/021:34:330
111391270,0ptp4l0-21swapper/000:19:590
111391260,0ptp4l0-21swapper/600:05:456
111391260,0ptp4l0-21swapper/522:15:565
111391260,0ptp4l0-21swapper/522:15:565
111391260,0ptp4l0-21swapper/521:11:575
111391260,0ptp4l0-21swapper/423:24:164
111391260,0ptp4l0-21swapper/421:55:384
111391260,0ptp4l0-21swapper/421:43:524
111391260,0ptp4l0-21swapper/419:50:144
111391260,0ptp4l0-21swapper/419:10:134
111391260,0ptp4l0-21swapper/121:52:211
111391260,0ptp4l0-21swapper/120:13:181
111391260,0ptp4l0-21swapper/022:49:310
111391260,0ptp4l0-21swapper/022:44:040
111391260,0ptp4l0-21swapper/022:08:590
111391260,0ptp4l0-21swapper/000:09:070
111391250,1ptp4l6275-21df00:15:134
111391250,0ptp4l0-21swapper/623:18:226
111391250,0ptp4l0-21swapper/523:40:115
111391250,0ptp4l0-21swapper/521:40:565
111391250,0ptp4l0-21swapper/519:20:155
111391250,0ptp4l0-21swapper/422:36:374
111391250,0ptp4l0-21swapper/421:26:434
111391250,0ptp4l0-21swapper/420:45:004
111391250,0ptp4l0-21swapper/420:35:004
111391250,0ptp4l0-21swapper/419:18:174
111391250,0ptp4l0-21swapper/123:47:271
111391250,0ptp4l0-21swapper/121:11:401
111391250,0ptp4l0-21swapper/119:25:141
111391250,0ptp4l0-21swapper/022:36:130
111391250,0ptp4l0-21swapper/021:59:120
111391250,0ptp4l0-21swapper/021:19:520
111391250,0ptp4l0-21swapper/020:25:140
111391250,0ptp4l0-21swapper/019:50:110
111391240,1ptp4l49-21ksoftirqd/423:55:244
111391240,1ptp4l3815-21find00:10:194
111391240,1ptp4l31122-21fw_conntrack20:10:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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