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2026-01-19 - 08:54
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

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 Jan 19, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16712710,1sleep31068-21runrttasks22:55:153
111391680,2ptp4l0-21swapper/019:05:160
111391610,5ptp4l0-21swapper/419:07:174
1881916049,6phc2sys0-21swapper/119:06:221
2867725949,6sleep20-21swapper/219:05:432
2869025533,7sleep60-21swapper/619:05:556
2882825241,7sleep70-21swapper/719:07:397
2866024938,7sleep30-21swapper/319:05:283
111391470,0ptp4l28932-21diskmemload23:32:451
2709224635,7sleep50-21swapper/519:05:065
111391320,0ptp4l0-21swapper/523:20:205
111391320,0ptp4l0-21swapper/500:25:145
111391310,0ptp4l0-21swapper/422:46:164
111391310,0ptp4l0-21swapper/120:25:161
111391300,0ptp4l0-21swapper/423:44:214
111391300,0ptp4l0-21swapper/423:19:304
111391300,0ptp4l0-21swapper/123:13:421
111391290,2ptp4l0-21swapper/421:32:124
111391290,0ptp4l0-21swapper/422:36:084
111391290,0ptp4l0-21swapper/422:36:084
111391290,0ptp4l0-21swapper/422:24:294
111391290,0ptp4l0-21swapper/421:25:214
111391290,0ptp4l0-21swapper/400:04:264
111391290,0ptp4l0-21swapper/323:50:103
111391290,0ptp4l0-21swapper/123:20:191
111391280,0ptp4l0-21swapper/523:11:455
111391280,0ptp4l0-21swapper/500:13:095
111391280,0ptp4l0-21swapper/500:00:535
111391280,0ptp4l0-21swapper/422:16:364
111391280,0ptp4l0-21swapper/121:13:461
111391280,0ptp4l0-21swapper/120:05:201
111391280,0ptp4l0-21swapper/100:23:591
111391280,0ptp4l0-21swapper/023:25:170
2930199274,4cyclictest0-21swapper/419:55:354
111391270,1ptp4l241ktimersoftd/122:10:471
111391270,0ptp4l0-21swapper/422:03:554
111391270,0ptp4l0-21swapper/421:55:124
111391270,0ptp4l0-21swapper/421:49:494
111391270,0ptp4l0-21swapper/419:50:114
111391270,0ptp4l0-21swapper/400:33:504
111391270,0ptp4l0-21swapper/400:21:144
111391270,0ptp4l0-21swapper/400:07:184
111391270,0ptp4l0-21swapper/323:34:103
111391270,0ptp4l0-21swapper/323:16:323
111391270,0ptp4l0-21swapper/222:59:342
111391270,0ptp4l0-21swapper/023:11:070
111391270,0ptp4l0-21swapper/021:21:220
111391270,0ptp4l0-21swapper/000:17:150
111391260,4ptp4l0-21swapper/522:14:175
111391260,1ptp4l6544-21turbostat19:30:006
111391260,0ptp4l0-21swapper/622:53:376
111391260,0ptp4l0-21swapper/423:37:524
111391260,0ptp4l0-21swapper/423:00:164
111391260,0ptp4l0-21swapper/422:43:094
111391260,0ptp4l0-21swapper/422:43:094
111391260,0ptp4l0-21swapper/422:27:394
111391260,0ptp4l0-21swapper/400:15:014
111391260,0ptp4l0-21swapper/122:42:441
111391260,0ptp4l0-21swapper/122:42:441
111391260,0ptp4l0-21swapper/023:43:060
111391260,0ptp4l0-21swapper/023:19:280
111391260,0ptp4l0-21swapper/022:58:200
111391260,0ptp4l0-21swapper/000:31:480
111391260,0ptp4l0-21swapper/000:28:550
29301992520,4cyclictest1061-21snmpd22:09:474
111391250,1ptp4l25481-21cpuspeed_turbos20:10:120
111391250,0ptp4l0-21swapper/521:25:565
111391250,0ptp4l0-21swapper/500:05:215
111391250,0ptp4l0-21swapper/422:30:174
111391250,0ptp4l0-21swapper/421:10:354
111391250,0ptp4l0-21swapper/400:26:424
111391250,0ptp4l0-21swapper/322:05:113
111391250,0ptp4l0-21swapper/122:51:441
111391250,0ptp4l0-21swapper/023:22:140
111391250,0ptp4l0-21swapper/022:45:190
111391250,0ptp4l0-21swapper/022:37:230
111391250,0ptp4l0-21swapper/022:37:230
111391250,0ptp4l0-21swapper/022:20:320
111391250,0ptp4l0-21swapper/022:10:120
111391250,0ptp4l0-21swapper/021:05:160
111391250,0ptp4l0-21swapper/019:55:140
111391250,0ptp4l0-21swapper/000:20:240
111391240,1ptp4l7923-21switchtime20:40:212
111391240,1ptp4l4900-21df_inode19:25:124
111391240,1ptp4l30838-21kernelversion00:20:176
111391240,1ptp4l2842-21timerwakeupswit00:25:201
111391240,1ptp4l24367-21timerwakeupswit00:10:200
111391240,1ptp4l22033-21if_enp0s2521:55:140
111391240,1ptp4l16755-21timerandwakeup23:15:207
111391240,1ptp4l16258-21hwlatdetect21:00:140
111391240,0ptp4l31979-21tr21:25:110
111391240,0ptp4l0-21swapper/719:45:017
111391240,0ptp4l0-21swapper/522:38:405
111391240,0ptp4l0-21swapper/522:38:405
111391240,0ptp4l0-21swapper/521:40:135
111391240,0ptp4l0-21swapper/521:35:135
111391240,0ptp4l0-21swapper/500:22:545
111391240,0ptp4l0-21swapper/423:45:114
111391240,0ptp4l0-21swapper/423:00:014
111391240,0ptp4l0-21swapper/422:52:244
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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