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2026-05-24 - 09:38

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 Sun May 24, 2026 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391660,28ptp4l0-21swapper/119:05:131
83852600,0sleep30-21swapper/319:25:203
233112590,1sleep09-21ksoftirqd/021:53:090
142492580,0sleep60-21swapper/623:52:116
111391580,5ptp4l0-21swapper/519:09:555
3150725736,6sleep20-21swapper/219:09:012
1881915733,7phc2sys0-21swapper/419:08:234
242232560,0sleep30-21swapper/321:10:183
3145025444,6sleep70-21swapper/719:08:187
3143225139,7sleep00-21swapper/019:08:020
3124924634,7sleep30-21swapper/319:05:413
3153124534,6sleep60-21swapper/619:09:216
111391330,0ptp4l0-21swapper/023:35:110
111391320,0ptp4l0-21swapper/522:47:305
111391320,0ptp4l0-21swapper/423:29:554
111391320,0ptp4l0-21swapper/420:35:194
111391320,0ptp4l0-21swapper/119:15:171
111391310,4ptp4l0-21swapper/422:46:184
111391310,3ptp4l0-21swapper/023:01:200
111391310,3ptp4l0-21swapper/022:15:010
111391310,3ptp4l0-21swapper/022:15:000
111391310,0ptp4l0-21swapper/400:19:214
111391310,0ptp4l0-21swapper/200:37:552
111391310,0ptp4l0-21swapper/021:19:400
111391300,2ptp4l0-21swapper/522:44:475
111391300,0ptp4l0-21swapper/720:10:177
111391300,0ptp4l0-21swapper/423:44:174
111391300,0ptp4l0-21swapper/023:44:440
111391300,0ptp4l0-21swapper/000:16:020
111391290,0ptp4l0-21swapper/422:38:024
111391290,0ptp4l0-21swapper/422:23:134
111391290,0ptp4l0-21swapper/022:52:480
111391290,0ptp4l0-21swapper/021:47:460
111391290,0ptp4l0-21swapper/021:30:570
111391280,0ptp4l0-21swapper/623:33:176
111391280,0ptp4l0-21swapper/600:37:566
111391280,0ptp4l0-21swapper/522:14:295
111391280,0ptp4l0-21swapper/522:14:295
111391280,0ptp4l0-21swapper/423:30:174
111391280,0ptp4l0-21swapper/422:41:204
111391280,0ptp4l0-21swapper/400:21:174
111391280,0ptp4l0-21swapper/023:07:470
111391280,0ptp4l0-21swapper/022:36:170
111391280,0ptp4l0-21swapper/020:56:050
111391280,0ptp4l0-21swapper/020:35:120
111391270,1ptp4l22614-21diskmemload21:31:146
111391270,1ptp4l0-21swapper/023:57:190
111391270,0ptp4l0-21swapper/422:08:414
111391270,0ptp4l0-21swapper/421:41:204
111391270,0ptp4l0-21swapper/421:18:524
111391270,0ptp4l0-21swapper/122:12:011
111391270,0ptp4l0-21swapper/122:12:001
111391270,0ptp4l0-21swapper/122:06:061
111391270,0ptp4l0-21swapper/023:49:050
111391270,0ptp4l0-21swapper/023:15:030
111391270,0ptp4l0-21swapper/021:12:350
111391260,4ptp4l0-21swapper/400:11:094
111391260,0ptp4l0-21swapper/523:57:505
111391260,0ptp4l0-21swapper/520:25:015
111391260,0ptp4l0-21swapper/520:06:235
111391260,0ptp4l0-21swapper/519:10:135
111391260,0ptp4l0-21swapper/500:02:405
111391260,0ptp4l0-21swapper/423:57:424
111391260,0ptp4l0-21swapper/422:56:564
111391260,0ptp4l0-21swapper/421:38:044
111391260,0ptp4l0-21swapper/421:22:404
111391260,0ptp4l0-21swapper/420:17:254
111391260,0ptp4l0-21swapper/400:37:424
111391260,0ptp4l0-21swapper/121:58:501
111391260,0ptp4l0-21swapper/023:24:010
111391260,0ptp4l0-21swapper/022:58:110
111391260,0ptp4l0-21swapper/020:40:140
111391260,0ptp4l0-21swapper/000:39:270
111391260,0ptp4l0-21swapper/000:01:580
111391250,1ptp4l20342-21munin-run21:49:594
111391250,0ptp4l0-21swapper/622:45:456
111391250,0ptp4l0-21swapper/621:28:126
111391250,0ptp4l0-21swapper/520:25:135
111391250,0ptp4l0-21swapper/423:21:494
111391250,0ptp4l0-21swapper/422:34:524
111391250,0ptp4l0-21swapper/422:13:284
111391250,0ptp4l0-21swapper/422:13:274
111391250,0ptp4l0-21swapper/421:27:554
111391250,0ptp4l0-21swapper/419:40:184
111391250,0ptp4l0-21swapper/222:00:182
111391250,0ptp4l0-21swapper/123:57:561
111391250,0ptp4l0-21swapper/121:51:101
111391250,0ptp4l0-21swapper/120:20:181
111391250,0ptp4l0-21swapper/021:29:000
111391250,0ptp4l0-21swapper/000:32:230
111391250,0ptp4l0-21swapper/000:13:240
111391240,1ptp4l8907-21irqrtprio23:45:164
111391240,1ptp4l4947-21df00:25:110
111391240,1ptp4l4289-21cat23:39:593
111391240,1ptp4l31497-21cat21:20:165
111391240,1ptp4l31213-21smart_sda20:15:200
111391240,1ptp4l27268-21ssh23:25:201
111391240,1ptp4l12838-21latency_hist21:40:011
111391240,0ptp4l0-21swapper/620:55:206
111391240,0ptp4l0-21swapper/620:15:146
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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