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2026-06-27 - 18:52

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 27, 2026 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
298982640,1sleep1241ktimersoftd/112:20:151
3162026251,7sleep70-21swapper/707:05:267
111391610,5ptp4l0-21swapper/107:09:041
1881916038,6phc2sys0-21swapper/407:07:434
154262590,0sleep125-21ksoftirqd/109:42:261
111391590,5ptp4l0-21swapper/507:06:225
111391590,28ptp4l0-21swapper/007:09:410
3195125040,6sleep20-21swapper/207:09:382
3187324837,6sleep60-21swapper/607:08:386
3166024534,7sleep30-21swapper/307:05:543
111391350,1ptp4l31835-21ssh09:20:174
111391350,0ptp4l0-21swapper/510:27:255
111391340,1ptp4l745-21gdbus12:40:000
111391340,1ptp4l23736-21diskstats09:10:144
111391340,1ptp4l23736-21diskstats09:10:144
111391340,0ptp4l0-21swapper/012:15:000
111391330,0ptp4l0-21swapper/011:25:200
111391330,0ptp4l0-21swapper/010:40:240
111391320,0ptp4l0-21swapper/410:13:244
111391320,0ptp4l0-21swapper/010:49:360
111391320,0ptp4l0-21swapper/009:48:520
111391320,0ptp4l0-21swapper/009:44:090
111391310,0ptp4l0-21swapper/610:04:176
111391310,0ptp4l0-21swapper/408:50:154
111391310,0ptp4l0-21swapper/012:27:590
111391310,0ptp4l0-21swapper/011:01:260
111391300,4ptp4l0-21swapper/408:55:214
111391300,0ptp4l0-21swapper/511:45:165
111391300,0ptp4l0-21swapper/510:10:195
111391300,0ptp4l0-21swapper/412:37:324
111391300,0ptp4l0-21swapper/410:42:474
111391300,0ptp4l0-21swapper/410:05:174
111391300,0ptp4l0-21swapper/010:20:180
111391290,4ptp4l0-21swapper/412:24:514
111391290,0ptp4l0-21swapper/509:27:235
111391290,0ptp4l0-21swapper/412:16:174
111391290,0ptp4l0-21swapper/410:52:424
111391290,0ptp4l0-21swapper/410:39:154
111391290,0ptp4l0-21swapper/409:41:034
111391280,3ptp4l0-21swapper/012:31:100
111391280,0ptp4l0-21swapper/409:30:224
111391280,0ptp4l0-21swapper/011:35:460
111391280,0ptp4l0-21swapper/011:14:070
111391280,0ptp4l0-21swapper/010:06:520
111391280,0ptp4l0-21swapper/009:36:520
111391280,0ptp4l0-21swapper/009:14:050
111391280,0ptp4l0-21swapper/009:14:040
111391270,3ptp4l101ktimersoftd/010:55:220
111391270,0ptp4l0-21swapper/412:31:024
111391270,0ptp4l0-21swapper/412:28:394
111391270,0ptp4l0-21swapper/411:57:474
111391270,0ptp4l0-21swapper/411:53:074
111391270,0ptp4l0-21swapper/411:53:074
111391270,0ptp4l0-21swapper/411:11:324
111391270,0ptp4l0-21swapper/410:30:134
111391270,0ptp4l0-21swapper/409:56:454
111391270,0ptp4l0-21swapper/409:37:444
111391270,0ptp4l0-21swapper/110:23:201
111391270,0ptp4l0-21swapper/109:50:161
111391270,0ptp4l0-21swapper/011:43:380
111391270,0ptp4l0-21swapper/011:30:150
111391270,0ptp4l0-21swapper/011:19:120
111391270,0ptp4l0-21swapper/010:30:550
111391260,0ptp4l0-21swapper/511:41:505
111391260,0ptp4l0-21swapper/412:02:114
111391260,0ptp4l0-21swapper/411:40:224
111391260,0ptp4l0-21swapper/411:27:064
111391260,0ptp4l0-21swapper/409:54:064
111391260,0ptp4l0-21swapper/409:29:214
111391260,0ptp4l0-21swapper/111:43:001
111391260,0ptp4l0-21swapper/109:32:571
111391260,0ptp4l0-21swapper/010:02:090
111391260,0ptp4l0-21swapper/009:59:020
111391260,0ptp4l0-21swapper/009:54:010
111391250,4ptp4l0-21swapper/010:36:570
111391250,0ptp4l23008-21diskmemload12:19:545
111391250,0ptp4l0-21swapper/712:35:207
111391250,0ptp4l0-21swapper/510:24:425
111391250,0ptp4l0-21swapper/508:35:205
111391250,0ptp4l0-21swapper/507:30:145
111391250,0ptp4l0-21swapper/410:26:094
111391250,0ptp4l0-21swapper/410:20:454
111391250,0ptp4l0-21swapper/410:16:144
111391250,0ptp4l0-21swapper/409:00:214
111391250,0ptp4l0-21swapper/408:48:574
111391250,0ptp4l0-21swapper/407:20:124
111391250,0ptp4l0-21swapper/111:55:451
111391250,0ptp4l0-21swapper/110:45:321
111391250,0ptp4l0-21swapper/012:22:140
111391250,0ptp4l0-21swapper/012:08:550
111391250,0ptp4l0-21swapper/011:24:500
111391250,0ptp4l0-21swapper/009:34:180
111391250,0ptp4l0-21swapper/009:20:440
111391250,0ptp4l0-21swapper/008:50:170
3227999242,0cyclictest0-21swapper/508:55:115
111391240,1ptp4l5593-21hddtemp_smartct07:20:130
111391240,1ptp4l4696-21latency_hist08:30:004
111391240,1ptp4l30867-21cpuspeed_turbos11:35:134
111391240,1ptp4l22071-21cat07:55:164
111391240,1ptp4l21998-21cat12:10:004
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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