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2026-08-26 - 02:46

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 Aug 25, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1887499260,25cyclictest0-21swapper/009:13:370
1887799250,24cyclictest8175-21sh09:34:263
1887799250,24cyclictest0-21swapper/310:13:343
18876992523,1cyclictest607-21in:imuxsock08:10:012
18875992523,1cyclictest21574-21cron10:15:001
1887499253,1cyclictest13-21ksoftirqd/009:54:540
1887499250,24cyclictest24061-21apt09:20:000
1887499250,24cyclictest12255-21diskmemload09:27:260
1887499250,23cyclictest313-21systemd-journal08:10:010
18877992423,0cyclictest12255-21diskmemload10:01:003
18877992422,1cyclictest34-21ksoftirqd/312:35:003
18877992422,1cyclictest0-21swapper/312:38:243
18877992421,1cyclictest151rcu_preempt12:10:013
1887799240,23cyclictest4695-21sendmail-msp10:00:003
1887799240,23cyclictest30596-21sh10:22:043
1887799240,23cyclictest12255-21diskmemload12:15:143
1887799240,23cyclictest12255-21diskmemload11:55:143
1887799240,23cyclictest12255-21diskmemload11:12:063
1887799240,23cyclictest0-21swapper/311:01:233
1887699240,24cyclictest32313-21ssh11:50:072
1887699240,24cyclictest0-21swapper/210:47:442
18875992421,2cyclictest25586-21cat09:50:011
1887599240,23cyclictest3372-21apt-get07:45:021
1887599240,23cyclictest13139-21ssh11:32:551
1887599240,1cyclictest12255-21diskmemload11:23:321
18874992422,2cyclictest0-21swapper/011:06:150
1887499240,24cyclictest0-21swapper/010:37:240
1887499240,23cyclictest27020-21ssh10:19:460
1887499240,23cyclictest22093-21munin-run12:10:010
1887499240,23cyclictest12255-21diskmemload10:47:320
1887499240,23cyclictest12255-21diskmemload09:22:300
1887499240,23cyclictest0-21swapper/010:56:450
1887499240,1cyclictest0-21swapper/011:03:540
1887499240,0cyclictest0-21swapper/012:02:420
1887499240,0cyclictest0-21swapper/010:44:450
18877992322,0cyclictest34-21ksoftirqd/309:13:353
18877992322,0cyclictest12255-21diskmemload11:54:563
18877992321,1cyclictest13131-21sh11:32:553
18877992321,1cyclictest0-21swapper/312:05:483
18877992321,1cyclictest0-21swapper/310:56:253
18877992321,1cyclictest0-21swapper/309:41:343
18877992321,1cyclictest0-21swapper/308:50:013
18877992321,0cyclictest151rcu_preempt10:28:463
18877992320,2cyclictest24757-21ssh10:45:443
1887799230,23cyclictest0-21swapper/311:38:183
1887799230,23cyclictest0-21swapper/311:07:273
1887799230,22cyclictest8720-21sh11:29:333
1887799230,22cyclictest26377-21apt-get07:25:373
1887799230,22cyclictest21660-21sh09:45:453
1887799230,22cyclictest16235-21ssh12:04:383
1887799230,22cyclictest12255-21diskmemload09:29:233
1887799230,22cyclictest11468-21ssh12:29:003
1887799230,22cyclictest0-21swapper/311:21:273
1887799230,0cyclictest22325-21apt-get10:15:383
18876992323,0cyclictest12255-21diskmemload09:30:252
18876992322,1cyclictest12255-21diskmemload09:51:252
18876992320,2cyclictest32573-21expr09:55:382
1887699230,2cyclictest19233-21rm12:06:012
1887699230,23cyclictest12255-21diskmemload12:18:402
1887699230,23cyclictest12255-21diskmemload10:38:112
1887699230,23cyclictest0-21swapper/212:36:512
1887699230,23cyclictest0-21swapper/210:33:402
1887699230,23cyclictest0-21swapper/209:25:162
1887699230,22cyclictest29056-21ssh10:50:292
1887699230,22cyclictest24854-21ssh11:15:072
1887699230,22cyclictest16117-21ssh12:32:052
1887699230,22cyclictest13321-21munin-run11:05:002
1887699230,22cyclictest0-21swapper/209:12:182
1887699230,0cyclictest0-21swapper/212:27:362
1887699230,0cyclictest0-21swapper/210:07:192
1887699230,0cyclictest0-21swapper/210:04:432
18875992323,0cyclictest12255-21diskmemload12:05:061
18875992323,0cyclictest0-21swapper/111:29:391
18875992323,0cyclictest0-21swapper/110:07:061
18875992322,1cyclictest5350-21/usr/sbin/munin09:30:471
18875992322,1cyclictest17563-21ssh10:40:141
18875992321,1cyclictest32009-21ssh12:18:111
18875992321,1cyclictest2682-21ssh09:57:211
18875992321,1cyclictest21626-21sh12:36:511
18875992320,2cyclictest30418-21sh10:21:421
1887599230,23cyclictest12255-21diskmemload09:43:041
1887599230,23cyclictest0-21swapper/112:27:301
1887599230,23cyclictest0-21swapper/112:10:461
1887599230,23cyclictest0-21swapper/110:30:321
1887599230,23cyclictest0-21swapper/110:15:381
1887599230,22cyclictest8203-21ssh11:00:161
1887599230,22cyclictest21939-21sh11:11:171
1887599230,22cyclictest2108-21ssh10:55:181
1887599230,22cyclictest15945-21ssh11:05:511
1887599230,22cyclictest12255-21diskmemload10:36:581
1887599230,22cyclictest11471-21sh09:36:121
1887599230,0cyclictest12255-21diskmemload11:50:161
1887599230,0cyclictest12255-21diskmemload11:15:431
1887599230,0cyclictest0-21swapper/112:22:531
1887599230,0cyclictest0-21swapper/109:18:481
18874992323,0cyclictest12255-21diskmemload11:46:340
18874992323,0cyclictest0-21swapper/012:26:550
18874992323,0cyclictest0-21swapper/008:50:370
18874992322,1cyclictest62550irq/127-eno110:12:520
1887499231,21cyclictest62550irq/127-eno111:55:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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