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2026-09-05 - 14:45

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 Sep 05, 2026 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
133922690,0sleep50-21swapper/519:30:195
111391680,32ptp4l0-21swapper/019:09:110
30182610,1sleep03021-21sort22:55:180
198952600,1sleep09-21ksoftirqd/020:55:190
156325949,6sleep20-21swapper/219:09:022
148925734,7sleep10-21swapper/119:08:061
111391570,5ptp4l0-21swapper/519:06:335
268242560,0sleep70-21swapper/722:45:017
104752540,0sleep20-21swapper/223:54:572
127425342,6sleep70-21swapper/719:05:227
161125240,7sleep40-21swapper/419:09:364
3210124736,7sleep30-21swapper/319:05:023
222802460,0sleep20-21swapper/223:25:002
157524634,7sleep60-21swapper/619:09:066
111391330,1ptp4l14565-21if_eno119:35:130
111391320,0ptp4l0-21swapper/023:00:120
111391310,0ptp4l0-21swapper/023:15:140
111391300,1ptp4l28633-21ssh00:20:254
111391300,0ptp4l0-21swapper/423:35:184
111391300,0ptp4l0-21swapper/421:41:014
111391300,0ptp4l0-21swapper/023:43:100
111391300,0ptp4l0-21swapper/023:35:550
111391300,0ptp4l0-21swapper/023:30:180
111391300,0ptp4l0-21swapper/022:45:120
111391300,0ptp4l0-21swapper/022:11:470
111391300,0ptp4l0-21swapper/020:10:200
111391290,0ptp4l0-21swapper/423:53:424
111391290,0ptp4l0-21swapper/423:11:504
111391290,0ptp4l0-21swapper/422:06:094
111391290,0ptp4l0-21swapper/421:36:274
111391290,0ptp4l0-21swapper/420:54:594
111391290,0ptp4l0-21swapper/400:30:124
111391290,0ptp4l0-21swapper/023:49:340
111391290,0ptp4l0-21swapper/023:29:180
111391280,2ptp4l0-21swapper/422:11:174
111391280,2ptp4l0-21swapper/023:56:480
111391280,1ptp4l22885-21latency_hist21:05:000
111391280,0ptp4l0-21swapper/421:47:434
111391280,0ptp4l0-21swapper/400:28:574
111391280,0ptp4l0-21swapper/021:49:240
111391280,0ptp4l0-21swapper/021:40:380
111391280,0ptp4l0-21swapper/021:20:340
111391280,0ptp4l0-21swapper/021:17:390
111391270,0ptp4l0-21swapper/422:47:294
111391270,0ptp4l0-21swapper/422:33:324
111391270,0ptp4l0-21swapper/421:20:334
111391270,0ptp4l0-21swapper/421:16:274
111391270,0ptp4l0-21swapper/323:50:433
111391270,0ptp4l0-21swapper/119:25:151
111391270,0ptp4l0-21swapper/023:09:160
111391270,0ptp4l0-21swapper/022:26:580
111391270,0ptp4l0-21swapper/022:04:270
111391270,0ptp4l0-21swapper/020:35:130
111391270,0ptp4l0-21swapper/000:10:520
111391260,1ptp4l0-21swapper/021:50:550
111391260,0ptp4l0-21swapper/722:57:377
111391260,0ptp4l0-21swapper/423:34:404
111391260,0ptp4l0-21swapper/422:40:014
111391260,0ptp4l0-21swapper/422:40:004
111391260,0ptp4l0-21swapper/422:27:484
111391260,0ptp4l0-21swapper/422:20:494
111391260,0ptp4l0-21swapper/421:56:084
111391250,2ptp4l0-21swapper/000:03:130
111391250,1ptp4l2292-21cpuspeed_turbos19:10:100
111391250,0ptp4l49-21ksoftirqd/419:35:184
111391250,0ptp4l0-21swapper/523:40:115
111391250,0ptp4l0-21swapper/423:56:084
111391250,0ptp4l0-21swapper/423:41:594
111391250,0ptp4l0-21swapper/423:23:384
111391250,0ptp4l0-21swapper/422:51:554
111391250,0ptp4l0-21swapper/422:40:414
111391250,0ptp4l0-21swapper/421:52:284
111391250,0ptp4l0-21swapper/421:33:404
111391250,0ptp4l0-21swapper/420:45:204
111391250,0ptp4l0-21swapper/123:55:131
111391250,0ptp4l0-21swapper/123:31:241
111391250,0ptp4l0-21swapper/119:15:151
111391250,0ptp4l0-21swapper/023:23:230
111391250,0ptp4l0-21swapper/021:13:070
111391250,0ptp4l0-21swapper/020:49:560
111391250,0ptp4l0-21swapper/019:30:100
111391250,0ptp4l0-21swapper/019:15:140
111391250,0ptp4l0-21swapper/000:25:110
111391240,4ptp4l0-21swapper/022:15:500
111391240,3ptp4l0-21swapper/022:39:530
111391240,3ptp4l0-21swapper/022:39:530
111391240,1ptp4l7388-21hddtemp_smartct20:30:124
111391240,1ptp4l2769-21df_inode20:20:115
111391240,1ptp4l23917-21memory21:05:154
111391240,1ptp4l193399cyclictest23:50:004
111391240,1ptp4l16750-21cpuspeed_turbos22:30:140
111391240,1ptp4l10062-21cat19:25:140
111391240,0ptp4l0-21swapper/723:50:187
111391240,0ptp4l0-21swapper/700:06:537
111391240,0ptp4l0-21swapper/423:19:534
111391240,0ptp4l0-21swapper/423:08:434
111391240,0ptp4l0-21swapper/421:14:294
111391240,0ptp4l0-21swapper/421:00:194
111391240,0ptp4l0-21swapper/420:41:524
111391240,0ptp4l0-21swapper/420:10:134
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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