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2026-07-14 - 12:26

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 Tue Jul 14, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
536399260,25cyclictest0-21swapper/222:24:332
5363992523,1cyclictest0-21swapper/221:15:352
536399250,24cyclictest10935-21ssh21:21:122
536399250,1cyclictest23806-21sh22:30:002
5357992523,1cyclictest0-21swapper/121:54:351
535799250,24cyclictest0-21swapper/123:55:241
535799250,24cyclictest0-21swapper/122:31:081
5353992523,1cyclictest3562-21ssh22:40:590
535399250,24cyclictest0-21swapper/022:30:090
536799240,1cyclictest31029-21diskmemload23:24:593
536799240,1cyclictest19007-21ssh21:27:173
5363992418,2cyclictest30198-21rm00:31:282
536399240,23cyclictest0-21swapper/223:33:212
536399240,23cyclictest0-21swapper/223:16:002
5357992422,1cyclictest31704-21grep22:37:091
535799240,24cyclictest0-21swapper/121:10:191
535799240,24cyclictest0-21swapper/100:21:431
535799240,24cyclictest0-21swapper/100:09:061
535799240,23cyclictest0-21swapper/122:01:481
535799240,23cyclictest0-21swapper/121:58:081
535799240,23cyclictest0-21swapper/121:36:021
535799240,0cyclictest0-21swapper/122:44:361
535799240,0cyclictest0-21swapper/122:07:381
535799240,0cyclictest0-21swapper/121:44:191
5353992423,1cyclictest0-21swapper/023:01:180
535399240,24cyclictest0-21swapper/022:23:530
535399240,23cyclictest6906-21latency_hist22:15:000
535399240,23cyclictest25157-21/usr/sbin/munin00:27:090
535399240,0cyclictest0-21swapper/022:48:100
5367992323,0cyclictest0-21swapper/323:51:453
5367992323,0cyclictest0-21swapper/322:55:203
5367992323,0cyclictest0-21swapper/321:47:343
5367992323,0cyclictest0-21swapper/300:34:403
5367992323,0cyclictest0-21swapper/300:25:123
5367992321,1cyclictest13909-21ssh00:17:063
536799230,2cyclictest30058-21cat23:32:163
536799230,23cyclictest31029-21diskmemload22:25:173
536799230,23cyclictest0-21swapper/323:17:313
536799230,23cyclictest0-21swapper/322:45:453
536799230,23cyclictest0-21swapper/322:00:483
536799230,23cyclictest0-21swapper/321:10:113
536799230,22cyclictest31902-21ssh23:05:573
536799230,22cyclictest16875-21sh22:23:143
536799230,1cyclictest0-21swapper/323:46:423
536799230,1cyclictest0-21swapper/321:20:003
536799230,0cyclictest0-21swapper/322:41:323
536799230,0cyclictest0-21swapper/321:34:403
536799230,0cyclictest0-21swapper/300:24:283
5363992323,0cyclictest31029-21diskmemload21:27:062
5363992323,0cyclictest0-21swapper/200:35:112
5363992321,1cyclictest4160-21sh23:09:542
5363992321,1cyclictest24327-21apt-get22:02:062
5363992321,1cyclictest0-21swapper/223:21:542
5363992321,1cyclictest0-21swapper/221:50:072
5363992321,1cyclictest0-21swapper/200:10:342
5363992320,2cyclictest17201-21ssh23:50:292
5363992320,2cyclictest13905-21/usr/sbin/munin00:17:162
536399230,2cyclictest26905-21rm23:58:482
536399230,23cyclictest0-21swapper/200:20:542
536399230,22cyclictest8224-21tail21:47:092
536399230,22cyclictest31703-21ssh21:10:332
536399230,22cyclictest28604-21ssh23:02:182
536399230,22cyclictest21631-21diskstats22:57:092
536399230,22cyclictest2152-21cron20:10:002
536399230,22cyclictest20221-21apt-get19:42:072
536399230,22cyclictest12069-21ssh22:47:372
536399230,22cyclictest0-21swapper/222:05:102
536399230,1cyclictest24318-21ssh00:26:032
536399230,0cyclictest31029-21diskmemload22:52:022
536399230,0cyclictest0-21swapper/223:38:072
536399230,0cyclictest0-21swapper/200:02:272
5357992323,0cyclictest0-21swapper/123:30:101
5357992323,0cyclictest0-21swapper/123:26:111
5357992323,0cyclictest0-21swapper/122:16:221
5357992323,0cyclictest0-21swapper/121:25:091
5357992322,0cyclictest0-21swapper/121:20:331
5357992321,2cyclictest4376-21ssh00:37:091
5357992321,1cyclictest0-21swapper/123:00:041
5357992321,1cyclictest0-21swapper/122:46:111
5357992321,1cyclictest0-21swapper/121:45:591
5357992321,1cyclictest0-21swapper/100:00:471
535799230,2cyclictest16666-21munin-run20:40:001
535799230,22cyclictest31293-21ssh23:05:011
535799230,22cyclictest0-21swapper/123:49:531
535799230,1cyclictest0-21swapper/123:41:141
535799230,1cyclictest0-21swapper/100:17:061
535799230,0cyclictest0-21swapper/123:20:261
535799230,0cyclictest0-21swapper/122:22:321
5353992323,0cyclictest0-21swapper/022:29:080
5353992323,0cyclictest0-21swapper/021:57:220
5353992323,0cyclictest0-21swapper/000:30:130
5353992323,0cyclictest0-21swapper/000:15:020
5353992322,1cyclictest28894-21ssh00:01:080
5353992322,1cyclictest0-21swapper/022:01:180
5353992321,1cyclictest29806-21sendmail-msp20:00:000
5353992321,1cyclictest0-21swapper/023:53:530
5353992321,1cyclictest0-21swapper/021:53:320
5353992320,2cyclictest28233-21ssh21:36:540
5353992320,2cyclictest22185-21diskmemload23:26:190
535399231,21cyclictest31306-21rm21:10:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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