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2026-05-01 - 18:19

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 Fri May 01, 2026 12:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119021020,0sleep00-21swapper/010:27:130
111391630,5ptp4l0-21swapper/107:09:441
121012620,0sleep50-21swapper/509:16:455
111391610,5ptp4l0-21swapper/007:05:540
196572600,1sleep1241ktimersoftd/110:09:591
111391600,5ptp4l0-21swapper/507:08:555
111391580,6ptp4l0-21swapper/407:05:064
1447725543,7sleep20-21swapper/207:09:552
1414825543,7sleep70-21swapper/707:05:457
1429925433,7sleep30-21swapper/307:07:413
1438424939,6sleep60-21swapper/607:08:486
111391320,0ptp4l0-21swapper/407:35:144
111391310,6ptp4l0-21swapper/409:37:544
111391310,0ptp4l0-21swapper/610:24:016
111391310,0ptp4l0-21swapper/410:46:304
111391310,0ptp4l0-21swapper/409:49:364
111391310,0ptp4l0-21swapper/009:49:580
111391300,0ptp4l0-21swapper/410:51:024
111391300,0ptp4l0-21swapper/410:11:304
111391300,0ptp4l0-21swapper/209:28:042
111391300,0ptp4l0-21swapper/109:35:501
111391300,0ptp4l0-21swapper/009:13:180
111391300,0ptp4l0-21swapper/009:13:170
111391290,0ptp4l0-21swapper/510:17:215
111391290,0ptp4l0-21swapper/410:39:154
111391290,0ptp4l0-21swapper/112:10:121
111391290,0ptp4l0-21swapper/111:53:541
111391290,0ptp4l0-21swapper/111:53:541
111391290,0ptp4l0-21swapper/110:51:371
111391290,0ptp4l0-21swapper/109:19:321
111391290,0ptp4l0-21swapper/012:18:590
111391290,0ptp4l0-21swapper/010:57:100
111391290,0ptp4l0-21swapper/010:09:370
111391280,0ptp4l0-21swapper/511:14:495
111391280,0ptp4l0-21swapper/412:31:074
111391280,0ptp4l0-21swapper/411:52:384
111391280,0ptp4l0-21swapper/411:52:374
111391280,0ptp4l0-21swapper/411:09:504
111391280,0ptp4l0-21swapper/410:57:404
111391280,0ptp4l0-21swapper/410:05:504
111391280,0ptp4l0-21swapper/409:50:424
111391280,0ptp4l0-21swapper/409:41:204
111391280,0ptp4l0-21swapper/310:18:493
111391280,0ptp4l0-21swapper/110:45:241
111391280,0ptp4l0-21swapper/109:44:511
111391280,0ptp4l0-21swapper/012:05:430
111391280,0ptp4l0-21swapper/011:43:420
111391280,0ptp4l0-21swapper/010:53:590
111391280,0ptp4l0-21swapper/010:15:360
111391280,0ptp4l0-21swapper/009:55:470
111391270,0ptp4l0-21swapper/512:28:285
111391270,0ptp4l0-21swapper/511:43:005
111391270,0ptp4l0-21swapper/412:03:074
111391270,0ptp4l0-21swapper/410:03:194
111391270,0ptp4l0-21swapper/409:11:144
111391270,0ptp4l0-21swapper/409:11:144
111391270,0ptp4l0-21swapper/408:40:164
111391270,0ptp4l0-21swapper/310:37:413
111391270,0ptp4l0-21swapper/111:59:361
111391270,0ptp4l0-21swapper/110:21:101
111391270,0ptp4l0-21swapper/109:56:571
111391270,0ptp4l0-21swapper/108:50:161
111391270,0ptp4l0-21swapper/012:27:170
111391270,0ptp4l0-21swapper/011:33:130
111391270,0ptp4l0-21swapper/010:35:190
111391270,0ptp4l0-21swapper/010:23:420
111391270,0ptp4l0-21swapper/010:01:320
111391260,1ptp4l22676-21ssh11:38:544
111391260,1ptp4l16832-21ssh12:13:540
111391260,0ptp4l0-21swapper/711:51:427
111391260,0ptp4l0-21swapper/711:51:417
111391260,0ptp4l0-21swapper/711:07:427
111391260,0ptp4l0-21swapper/509:31:435
111391260,0ptp4l0-21swapper/508:15:205
111391260,0ptp4l0-21swapper/411:56:444
111391260,0ptp4l0-21swapper/411:31:344
111391260,0ptp4l0-21swapper/411:26:114
111391260,0ptp4l0-21swapper/411:04:284
111391260,0ptp4l0-21swapper/410:44:404
111391260,0ptp4l0-21swapper/410:31:164
111391260,0ptp4l0-21swapper/409:18:514
111391260,0ptp4l0-21swapper/312:01:303
111391260,0ptp4l0-21swapper/311:49:323
111391260,0ptp4l0-21swapper/311:08:103
111391260,0ptp4l0-21swapper/208:00:142
111391260,0ptp4l0-21swapper/112:15:101
111391260,0ptp4l0-21swapper/108:19:521
111391260,0ptp4l0-21swapper/107:25:001
111391260,0ptp4l0-21swapper/011:56:490
111391260,0ptp4l0-21swapper/009:25:150
111391260,0ptp4l0-21swapper/009:24:080
111391250,2ptp4l481ktimersoftd/410:20:294
111391250,1ptp4l824-21fw_conntrack12:35:114
111391250,1ptp4l32447-21cat07:45:160
111391250,1ptp4l27679-21hddtemp_smartct11:45:144
111391250,1ptp4l26586-21sh10:18:367
111391250,1ptp4l26136-21expr09:35:145
111391250,1ptp4l25371-21uname07:30:155
111391250,1ptp4l10580-21smartctl10:40:121
111391250,0ptp4l121rcu_preempt09:19:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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