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2026-01-07 - 07:46

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 Jan 07, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391850,25ptp4l0-21swapper/019:05:140
145792640,0sleep3401ktimersoftd/321:15:013
111391620,5ptp4l0-21swapper/119:05:061
111391600,6ptp4l0-21swapper/419:06:394
1909725635,7sleep30-21swapper/319:07:513
1914725534,6sleep60-21swapper/619:08:346
1913025543,7sleep70-21swapper/719:08:197
1891124737,6sleep20-21swapper/219:05:342
1922824534,7sleep50-21swapper/519:09:375
111391330,6ptp4l0-21swapper/123:35:191
111391320,0ptp4l0-21swapper/121:13:521
111391310,3ptp4l0-21swapper/500:20:005
111391310,0ptp4l0-21swapper/521:50:205
111391300,0ptp4l0-21swapper/522:58:385
111391300,0ptp4l0-21swapper/521:10:135
111391300,0ptp4l0-21swapper/423:10:204
111391300,0ptp4l0-21swapper/423:10:204
111391300,0ptp4l0-21swapper/123:29:331
111391300,0ptp4l0-21swapper/123:20:001
111391300,0ptp4l0-21swapper/100:36:061
111391290,2ptp4l0-21swapper/521:31:545
111391290,0ptp4l0-21swapper/100:32:391
111391280,0ptp4l0-21swapper/522:50:105
111391280,0ptp4l0-21swapper/322:00:163
111391280,0ptp4l0-21swapper/123:50:501
111391280,0ptp4l0-21swapper/122:45:191
111391280,0ptp4l0-21swapper/122:21:101
111391280,0ptp4l0-21swapper/100:20:231
111391270,0ptp4l0-21swapper/521:59:515
111391270,0ptp4l0-21swapper/521:40:095
111391270,0ptp4l0-21swapper/521:23:595
111391270,0ptp4l0-21swapper/500:35:225
111391270,0ptp4l0-21swapper/500:01:175
111391270,0ptp4l0-21swapper/423:45:554
111391270,0ptp4l0-21swapper/423:02:324
111391270,0ptp4l0-21swapper/422:55:354
111391270,0ptp4l0-21swapper/122:06:571
111391270,0ptp4l0-21swapper/100:02:331
111391260,0ptp4l0-21swapper/523:25:355
111391260,0ptp4l0-21swapper/522:37:275
111391260,0ptp4l0-21swapper/522:25:255
111391260,0ptp4l0-21swapper/521:36:445
111391260,0ptp4l0-21swapper/519:55:115
111391260,0ptp4l0-21swapper/500:28:425
111391260,0ptp4l0-21swapper/500:13:125
111391260,0ptp4l0-21swapper/123:12:541
111391260,0ptp4l0-21swapper/123:12:541
111391260,0ptp4l0-21swapper/122:56:201
111391260,0ptp4l0-21swapper/122:40:061
111391260,0ptp4l0-21swapper/122:15:451
111391260,0ptp4l0-21swapper/122:12:321
111391260,0ptp4l0-21swapper/122:02:251
111391260,0ptp4l0-21swapper/119:34:371
111391260,0ptp4l0-21swapper/100:29:021
111391260,0ptp4l0-21swapper/100:11:131
111391250,7ptp4l0-21swapper/521:27:005
111391250,5ptp4l15035-21kworker/0:122:41:230
111391250,0ptp4l0-21swapper/523:46:095
111391250,0ptp4l0-21swapper/523:44:025
111391250,0ptp4l0-21swapper/523:20:145
111391250,0ptp4l0-21swapper/523:08:265
111391250,0ptp4l0-21swapper/523:08:265
111391250,0ptp4l0-21swapper/523:00:105
111391250,0ptp4l0-21swapper/521:18:365
111391250,0ptp4l0-21swapper/520:50:115
111391250,0ptp4l0-21swapper/520:45:185
111391250,0ptp4l0-21swapper/520:05:175
111391250,0ptp4l0-21swapper/323:44:553
111391250,0ptp4l0-21swapper/123:22:491
111391250,0ptp4l0-21swapper/121:59:091
111391250,0ptp4l0-21swapper/121:35:471
111391250,0ptp4l0-21swapper/121:30:231
111391250,0ptp4l0-21swapper/121:28:011
111391250,0ptp4l0-21swapper/121:23:121
111391250,0ptp4l0-21swapper/120:15:151
111391250,0ptp4l0-21swapper/119:15:001
111391240,2ptp4l0-21swapper/020:25:160
111391240,1ptp4l3565-21unixbench_multi00:30:204
111391240,1ptp4l21269-21smart_sda20:20:191
111391240,0ptp4l11801-21cpuspeed_turbos22:35:101
111391240,0ptp4l0-21swapper/523:55:445
111391240,0ptp4l0-21swapper/523:15:555
111391240,0ptp4l0-21swapper/522:49:135
111391240,0ptp4l0-21swapper/520:00:125
111391240,0ptp4l0-21swapper/519:50:005
111391240,0ptp4l0-21swapper/519:20:165
111391240,0ptp4l0-21swapper/500:15:555
111391240,0ptp4l0-21swapper/422:40:164
111391240,0ptp4l0-21swapper/422:05:404
111391240,0ptp4l0-21swapper/421:46:104
111391240,0ptp4l0-21swapper/323:45:163
111391240,0ptp4l0-21swapper/123:59:131
111391240,0ptp4l0-21swapper/123:30:201
111391240,0ptp4l0-21swapper/123:00:171
111391240,0ptp4l0-21swapper/122:52:191
111391240,0ptp4l0-21swapper/121:46:111
111391240,0ptp4l0-21swapper/121:40:161
111391240,0ptp4l0-21swapper/100:05:011
111391230,1ptp4l1068-21runrttasks22:05:133
111391230,0ptp4l4299-21hddtemp_smartct22:25:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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