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2026-07-08 - 11:00

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Wed Jul 08, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15240993029,1cyclictest13-21ksoftirqd/022:16:230
1524099270,1cyclictest32452-21memory22:56:420
15247992623,2cyclictest13445-21sh22:40:002
15240992624,1cyclictest0-21swapper/023:30:430
1524099260,25cyclictest19426-21sh23:13:330
15251992523,1cyclictest0-21swapper/322:26:423
15251992523,1cyclictest0-21swapper/321:23:123
15247992520,4cyclictest0-21swapper/221:11:242
1524799250,2cyclictest3517-21/usr/sbin/munin22:31:392
1524799250,24cyclictest23350-21rm00:14:252
1524799250,24cyclictest10030-21apt-get20:06:362
1524799250,24cyclictest0-21swapper/221:55:572
15242992524,1cyclictest14046-21rm23:09:261
15242992522,2cyclictest22152-21idleruntime-cro23:45:001
1524299250,1cyclictest20475-21ssh21:48:221
1524099250,24cyclictest8489-21diskmemload22:40:280
1524099250,24cyclictest0-21swapper/021:38:240
15251992422,1cyclictest13439-21cron22:40:003
15251992422,1cyclictest12660-21grep00:05:013
15251992422,1cyclictest0-21swapper/323:36:143
1525199240,2cyclictest9858-21ssh23:34:043
1525199240,23cyclictest8489-21diskmemload23:06:113
1525199240,23cyclictest8489-21diskmemload23:00:443
1525199240,23cyclictest8489-21diskmemload21:28:033
1525199240,23cyclictest18645-21sh23:12:263
1525199240,23cyclictest16124-21apt-get23:40:023
1525199240,23cyclictest0-21swapper/322:53:203
1525199240,0cyclictest0-21swapper/321:55:573
1524799240,24cyclictest8489-21diskmemload00:25:242
1524799240,23cyclictest22160-21dump-pmu-power23:45:002
1524799240,23cyclictest0-21swapper/223:10:542
1524799240,23cyclictest0-21swapper/221:23:122
1524299240,24cyclictest0-21swapper/123:37:131
1524299240,24cyclictest0-21swapper/122:36:571
1524299240,23cyclictest8489-21diskmemload23:26:301
1524299240,0cyclictest8489-21diskmemload00:39:501
1524299240,0cyclictest0-21swapper/122:14:221
15240992423,1cyclictest13-21ksoftirqd/023:39:390
15240992423,1cyclictest0-21swapper/000:15:030
15240992422,1cyclictest0-21swapper/023:28:020
15240992422,1cyclictest0-21swapper/022:21:310
1524099240,24cyclictest8489-21diskmemload23:21:290
1524099240,24cyclictest0-21swapper/021:44:440
1524099240,23cyclictest8489-21diskmemload23:15:580
1524099240,23cyclictest8489-21diskmemload22:39:280
1524099240,23cyclictest31734-21sh21:30:130
1524099240,23cyclictest0-21swapper/023:51:470
1524099240,0cyclictest8489-21diskmemload22:26:220
1524099240,0cyclictest0-21swapper/000:10:260
15251992323,0cyclictest0-21swapper/300:25:243
15251992323,0cyclictest0-21swapper/300:08:273
15251992321,1cyclictest3282-21cron23:00:003
15251992321,1cyclictest26091-21sh23:47:103
15251992321,1cyclictest0-21swapper/323:15:453
15251992321,1cyclictest0-21swapper/321:10:123
15251992320,2cyclictest8489-21diskmemload21:41:493
15251992320,2cyclictest24481-21sh22:21:133
15251992320,2cyclictest1470-21sh22:01:003
15251992320,2cyclictest11770-21awk00:31:473
1525199230,2cyclictest22725-21sh21:51:093
1525199230,23cyclictest8489-21diskmemload23:58:193
1525199230,23cyclictest0-21swapper/323:52:573
1525199230,22cyclictest9843-21sh22:06:473
1525199230,22cyclictest8489-21diskmemload22:32:313
1525199230,0cyclictest0-21swapper/323:20:213
1525199230,0cyclictest0-21swapper/321:37:533
15247992323,0cyclictest0-21swapper/223:36:142
15247992323,0cyclictest0-21swapper/222:41:212
15247992321,1cyclictest31118-21expr00:21:362
15247992321,1cyclictest0-21swapper/222:19:562
15247992320,2cyclictest737-21ssh23:26:382
15247992318,4cyclictest0-21swapper/221:41:122
1524799230,2cyclictest16604-21ssh00:07:522
1524799230,23cyclictest0-21swapper/221:28:262
1524799230,22cyclictest31370-21ssh23:24:312
1524799230,22cyclictest24602-21ssh23:18:002
1524799230,22cyclictest21251-21ssh21:49:292
1524799230,22cyclictest15114-21ssh00:36:042
1524799230,1cyclictest13184-21ssh23:08:082
1524799230,0cyclictest0-21swapper/223:52:572
1524799230,0cyclictest0-21swapper/222:53:202
1524799230,0cyclictest0-21swapper/222:05:162
1524799230,0cyclictest0-21swapper/221:34:412
1524799230,0cyclictest0-21swapper/200:34:242
15242992323,0cyclictest8489-21diskmemload22:25:181
15242992323,0cyclictest0-21swapper/123:54:161
15242992323,0cyclictest0-21swapper/121:18:451
15242992322,1cyclictest8489-21diskmemload00:00:391
15242992321,1cyclictest24913-21sh22:50:121
1524299230,23cyclictest0-21swapper/123:02:531
1524299230,23cyclictest0-21swapper/122:55:221
1524299230,23cyclictest0-21swapper/122:47:431
1524299230,23cyclictest0-21swapper/100:34:351
1524299230,22cyclictest606-21dbus-daemon00:25:011
1524299230,22cyclictest31774-21sh21:30:161
1524299230,22cyclictest30930-21sh23:23:511
1524299230,22cyclictest0-21swapper/123:10:011
1524299230,22cyclictest0-21swapper/121:25:491
1524299230,22cyclictest0-21swapper/100:06:211
1524299230,0cyclictest8489-21diskmemload22:40:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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