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2026-06-06 - 16:41

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 Jun 06, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2585526239,7sleep40-21swapper/419:09:584
2551626240,6sleep70-21swapper/719:05:367
111391610,30ptp4l0-21swapper/219:07:302
111391590,15ptp4l0-21swapper/519:07:255
111391580,5ptp4l0-21swapper/019:09:160
111391570,5ptp4l0-21swapper/119:05:501
2580325332,7sleep30-21swapper/319:09:243
2564224735,7sleep60-21swapper/619:07:186
111391330,1ptp4l1607-21sshd00:28:374
111391330,0ptp4l0-21swapper/522:10:105
111391310,0ptp4l0-21swapper/023:34:070
111391310,0ptp4l0-21swapper/023:25:170
111391310,0ptp4l0-21swapper/023:05:150
111391310,0ptp4l0-21swapper/000:01:070
111391300,1ptp4l24443-21ssh21:19:284
111391300,1ptp4l10191-21ssh22:26:051
111391300,0ptp4l0-21swapper/523:19:395
111391300,0ptp4l0-21swapper/422:30:194
111391300,0ptp4l0-21swapper/421:26:414
111391300,0ptp4l0-21swapper/123:50:121
111391300,0ptp4l0-21swapper/121:15:481
111391300,0ptp4l0-21swapper/023:00:180
111391300,0ptp4l0-21swapper/022:27:310
111391290,0ptp4l0-21swapper/422:16:534
111391290,0ptp4l0-21swapper/421:21:264
111391290,0ptp4l0-21swapper/419:55:104
111391290,0ptp4l0-21swapper/400:39:324
111391290,0ptp4l0-21swapper/122:16:251
111391290,0ptp4l0-21swapper/119:25:181
111391290,0ptp4l0-21swapper/100:07:031
111391290,0ptp4l0-21swapper/023:45:110
111391290,0ptp4l0-21swapper/023:37:060
111391290,0ptp4l0-21swapper/022:30:570
111391290,0ptp4l0-21swapper/021:37:270
111391290,0ptp4l0-21swapper/021:10:180
111391280,1ptp4l7026-21rm21:39:414
111391280,0ptp4l0-21swapper/721:37:597
111391280,0ptp4l0-21swapper/423:35:594
111391280,0ptp4l0-21swapper/423:34:234
111391280,0ptp4l0-21swapper/422:39:084
111391280,0ptp4l0-21swapper/422:12:314
111391280,0ptp4l0-21swapper/121:23:071
111391280,0ptp4l0-21swapper/100:16:321
111391280,0ptp4l0-21swapper/021:43:320
111391280,0ptp4l0-21swapper/021:33:350
111391280,0ptp4l0-21swapper/020:00:190
111391270,3ptp4l0-21swapper/419:54:294
111391270,2ptp4l0-21swapper/421:44:394
111391270,0ptp4l0-21swapper/423:41:074
111391270,0ptp4l0-21swapper/421:12:244
111391270,0ptp4l0-21swapper/400:04:474
111391270,0ptp4l0-21swapper/022:42:290
111391270,0ptp4l0-21swapper/021:59:050
111391270,0ptp4l0-21swapper/000:38:540
111391260,0ptp4l0-21swapper/622:56:186
111391260,0ptp4l0-21swapper/619:35:106
111391260,0ptp4l0-21swapper/523:42:285
111391260,0ptp4l0-21swapper/523:03:425
111391260,0ptp4l0-21swapper/500:40:005
111391260,0ptp4l0-21swapper/500:16:495
111391260,0ptp4l0-21swapper/423:23:354
111391260,0ptp4l0-21swapper/422:52:194
111391260,0ptp4l0-21swapper/422:45:094
111391260,0ptp4l0-21swapper/422:25:024
111391260,0ptp4l0-21swapper/421:34:554
111391260,0ptp4l0-21swapper/123:02:581
111391260,0ptp4l0-21swapper/122:34:051
111391260,0ptp4l0-21swapper/023:21:570
111391260,0ptp4l0-21swapper/022:58:470
111391260,0ptp4l0-21swapper/022:45:490
111391260,0ptp4l0-21swapper/022:07:550
111391260,0ptp4l0-21swapper/000:23:110
111391250,2ptp4l0-21swapper/419:30:294
111391250,1ptp4l9-21ksoftirqd/019:45:170
111391250,1ptp4l23469-21date23:30:004
111391250,0ptp4l0-21swapper/723:54:557
111391250,0ptp4l0-21swapper/620:15:136
111391250,0ptp4l0-21swapper/500:20:175
111391250,0ptp4l0-21swapper/423:45:124
111391250,0ptp4l0-21swapper/423:10:154
111391250,0ptp4l0-21swapper/423:05:424
111391250,0ptp4l0-21swapper/422:58:044
111391250,0ptp4l0-21swapper/421:45:194
111391250,0ptp4l0-21swapper/400:30:184
111391250,0ptp4l0-21swapper/400:30:184
111391250,0ptp4l0-21swapper/400:24:224
111391250,0ptp4l0-21swapper/400:05:184
111391250,0ptp4l0-21swapper/200:09:252
111391250,0ptp4l0-21swapper/022:50:060
111391250,0ptp4l0-21swapper/021:51:000
111391250,0ptp4l0-21swapper/021:51:000
111391250,0ptp4l0-21swapper/021:23:350
111391250,0ptp4l0-21swapper/021:15:130
111391250,0ptp4l0-21swapper/000:31:060
111391250,0ptp4l0-21swapper/000:31:060
111391250,0ptp4l0-21swapper/000:25:160
111391250,0ptp4l0-21swapper/000:05:140
111391240,4ptp4l0-21swapper/722:38:067
111391240,1ptp4l7283-21smartctl23:50:194
111391240,1ptp4l28303-21sed23:35:155
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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