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2026-10-23 - 22:11

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 Fri Oct 23, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1746099260,1cyclictest0-21swapper/010:20:370
1746699250,24cyclictest21039-21cron12:15:003
1746599251,23cyclictest10793-21diskmemload10:57:262
1746599250,24cyclictest10492-21ssh12:34:562
1746599250,24cyclictest0-21swapper/209:46:372
1746499250,2cyclictest18708-21/usr/sbin/munin09:15:361
17460992524,1cyclictest0-21swapper/009:23:420
1746099250,24cyclictest23308-21ssh10:48:260
1746099250,24cyclictest10793-21diskmemload10:56:010
17466992423,1cyclictest10793-21diskmemload12:37:183
17466992422,1cyclictest32618-21ssh10:26:403
1746699240,24cyclictest12874-21ssh12:06:023
1746699240,23cyclictest23191-21ssh09:49:473
1746699240,23cyclictest17379-21ssh09:15:193
1746699240,1cyclictest0-21swapper/310:14:243
17465992423,1cyclictest2260-21apt-get07:45:322
17465992422,0cyclictest0-21swapper/212:17:112
17465992419,4cyclictest0-21swapper/209:12:002
1746599240,23cyclictest25323-21apt-get10:50:322
1746599240,23cyclictest21135-21ssh10:15:492
1746599240,23cyclictest0-21swapper/210:28:052
1746599240,23cyclictest0-21swapper/210:12:242
1746599240,22cyclictest313-21systemd-journal11:40:002
1746599240,21cyclictest0-21swapper/212:02:542
1746599240,1cyclictest24135-21ssh10:49:432
17464992424,0cyclictest0-21swapper/110:37:141
1746499240,24cyclictest0-21swapper/112:14:351
1746499240,23cyclictest0-21swapper/110:56:311
1746499240,0cyclictest0-21swapper/112:05:111
1746499240,0cyclictest0-21swapper/110:15:241
17460992422,2cyclictest13-21ksoftirqd/008:30:000
1746099240,2cyclictest22670-21ssh09:20:000
1746099240,23cyclictest25751-21ssh12:18:500
1746099240,23cyclictest17964-21ssh11:11:550
1746099240,23cyclictest0-21swapper/011:00:420
1746099240,23cyclictest0-21swapper/010:52:110
1746099240,1cyclictest4823-21munin-plugin-st12:00:010
1746099240,1cyclictest10793-21diskmemload09:56:140
17466992323,0cyclictest10793-21diskmemload10:15:023
17466992323,0cyclictest0-21swapper/311:32:193
17466992323,0cyclictest0-21swapper/309:58:593
17466992319,3cyclictest10591-21perf12:35:013
1746699231,21cyclictest32221-21apt-get07:40:313
1746699230,23cyclictest10793-21diskmemload12:04:423
1746699230,23cyclictest0-21swapper/312:26:313
1746699230,23cyclictest0-21swapper/309:27:123
1746699230,22cyclictest9169-21basename08:00:013
1746699230,22cyclictest28395-21sendmail08:40:013
1746699230,22cyclictest28007-21ssh09:53:563
1746699230,22cyclictest23300-21ssh11:46:013
1746699230,22cyclictest10793-21diskmemload10:37:443
1746699230,22cyclictest0-21swapper/310:22:033
1746699230,0cyclictest10793-21diskmemload12:21:383
17465992323,0cyclictest0-21swapper/210:09:592
17465992323,0cyclictest0-21swapper/209:51:202
17465992322,0cyclictest10793-21diskmemload11:27:502
17465992321,1cyclictest0-21swapper/211:55:122
17465992321,1cyclictest0-21swapper/210:00:332
1746599230,2cyclictest31455-21ssh12:24:102
1746599230,23cyclictest10793-21diskmemload11:00:082
1746599230,23cyclictest0-21swapper/209:57:552
1746599230,22cyclictest27012-21dump-pmu-power07:30:002
1746599230,22cyclictest15915-21sh12:39:512
1746599230,22cyclictest14103-21ssh10:40:312
1746599230,22cyclictest0-21swapper/211:16:162
1746599230,0cyclictest10793-21diskmemload11:45:292
1746599230,0cyclictest10793-21diskmemload11:06:062
1746599230,0cyclictest0-21swapper/212:14:202
17464992323,0cyclictest0-21swapper/111:40:221
17464992323,0cyclictest0-21swapper/110:43:271
17464992323,0cyclictest0-21swapper/110:31:271
17464992323,0cyclictest0-21swapper/110:27:401
17464992323,0cyclictest0-21swapper/110:09:171
17464992322,0cyclictest0-21swapper/109:57:081
17464992321,1cyclictest0-21swapper/111:32:031
17464992320,2cyclictest2909-21/usr/sbin/munin10:00:391
1746499231,21cyclictest0-21swapper/111:05:331
1746499230,2cyclictest7367-21rm12:30:411
1746499230,23cyclictest0-21swapper/111:19:121
1746499230,23cyclictest0-21swapper/111:12:151
1746499230,22cyclictest29115-21ssh10:53:211
1746499230,22cyclictest24854-21sh11:48:171
1746499230,22cyclictest10800-21latency_hist09:10:001
1746499230,22cyclictest0-21swapper/111:26:131
1746499230,22cyclictest0-21swapper/111:01:391
1746499230,22cyclictest0-21swapper/110:46:201
1746499230,0cyclictest0-21swapper/112:37:571
1746499230,0cyclictest0-21swapper/112:27:391
1746499230,0cyclictest0-21swapper/112:16:511
17460992323,0cyclictest10793-21diskmemload09:47:330
17460992323,0cyclictest0-21swapper/012:23:420
17460992323,0cyclictest0-21swapper/012:05:430
17460992323,0cyclictest0-21swapper/012:01:240
17460992323,0cyclictest0-21swapper/011:15:150
17460992323,0cyclictest0-21swapper/009:54:030
17460992323,0cyclictest0-21swapper/009:40:210
17460992322,1cyclictest13261-21ssh12:36:030
17460992322,1cyclictest0-21swapper/011:33:430
17460992321,1cyclictest10793-21diskmemload12:10:270
17460992320,2cyclictest2801-21ssh10:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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