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2026-06-01 - 19:29

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 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 Mon Jun 01, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
945099250,24cyclictest3199-21diskmemload11:08:282
945099250,24cyclictest3199-21diskmemload10:13:212
945099250,24cyclictest3199-21diskmemload09:58:392
945099250,24cyclictest1073-21cron08:00:002
9446992523,1cyclictest0-21swapper/110:58:391
944699250,24cyclictest4682-21apt-get10:43:361
944699250,24cyclictest3199-21diskmemload12:09:531
944699250,24cyclictest0-21swapper/111:12:121
9442992523,1cyclictest1-21systemd07:40:000
944299250,24cyclictest3199-21diskmemload11:23:450
944299250,24cyclictest3199-21diskmemload10:38:110
944299250,24cyclictest1797-21sh11:10:000
944299250,24cyclictest14373-21apt-get12:23:380
944299250,24cyclictest0-21swapper/011:45:000
944299250,24cyclictest0-21swapper/009:21:270
9454992423,0cyclictest3199-21diskmemload12:25:213
945499240,23cyclictest3199-21diskmemload11:11:543
945499240,23cyclictest3199-21diskmemload10:50:123
945499240,23cyclictest0-21swapper/312:34:423
945499240,23cyclictest0-21swapper/310:46:133
945499240,23cyclictest0-21swapper/310:24:263
945499240,0cyclictest0-21swapper/310:14:413
9450992420,1cyclictest0-21swapper/211:31:282
945099240,23cyclictest26301-21apt-get11:03:362
945099240,23cyclictest0-21swapper/211:50:302
945099240,23cyclictest0-21swapper/211:46:302
945099240,23cyclictest0-21swapper/209:37:222
945099240,1cyclictest0-21swapper/212:09:362
944699240,2cyclictest19014-21perf07:30:011
944699240,0cyclictest3199-21diskmemload11:34:081
944299242,21cyclictest62550irq/127-eno110:23:310
944299240,2cyclictest29732-21ssh12:37:470
944299240,24cyclictest3199-21diskmemload10:02:470
944299240,24cyclictest0-21swapper/011:33:560
944299240,23cyclictest3199-21diskmemload10:17:300
944299240,23cyclictest3199-21diskmemload10:06:260
944299240,23cyclictest3199-21diskmemload09:55:080
944299240,23cyclictest20410-21hddtemp_smartct12:28:390
944299240,23cyclictest17081-21if_err_eno109:53:410
944299240,23cyclictest0-21swapper/009:49:370
944299240,23cyclictest0-21swapper/009:38:010
944299240,22cyclictest7498-21rm11:45:550
944299240,0cyclictest0-21swapper/010:13:370
9454992323,0cyclictest0-21swapper/311:45:273
9454992323,0cyclictest0-21swapper/310:09:533
9454992323,0cyclictest0-21swapper/309:29:543
9454992322,1cyclictest3199-21diskmemload11:55:293
9454992321,1cyclictest2289-21ssh11:40:583
945499231,1cyclictest14288-21taskset11:53:113
945499230,2cyclictest1362-21sh11:09:183
945499230,23cyclictest3199-21diskmemload11:25:393
945499230,23cyclictest0-21swapper/312:37:113
945499230,23cyclictest0-21swapper/312:00:423
945499230,23cyclictest0-21swapper/309:43:263
945499230,23cyclictest0-21swapper/309:19:403
945499230,22cyclictest3199-21diskmemload11:22:153
945499230,22cyclictest3199-21diskmemload10:26:063
945499230,22cyclictest29074-21ssh11:35:373
945499230,22cyclictest2662-21ssh12:12:423
945499230,22cyclictest26540-21ssh11:33:383
945499230,0cyclictest3199-21diskmemload12:22:203
945499230,0cyclictest0-21swapper/309:23:403
9450992323,0cyclictest0-21swapper/210:01:182
9450992323,0cyclictest0-21swapper/209:26:012
9450992321,2cyclictest32246-21ssh10:38:372
9450992321,1cyclictest0-21swapper/210:31:372
945099230,2cyclictest1333-21runrttasks10:08:432
945099230,23cyclictest0-21swapper/212:01:302
945099230,23cyclictest0-21swapper/211:23:362
945099230,22cyclictest3199-21diskmemload09:53:392
945099230,22cyclictest3199-21diskmemload09:23:402
945099230,22cyclictest25977-21rm09:31:332
945099230,22cyclictest19028-21ssh11:26:282
945099230,22cyclictest15977-21apt08:30:002
945099230,22cyclictest0-21swapper/212:15:382
945099230,0cyclictest3199-21diskmemload12:25:182
945099230,0cyclictest0-21swapper/212:20:372
945099230,0cyclictest0-21swapper/212:12:052
945099230,0cyclictest0-21swapper/210:52:122
945099230,0cyclictest0-21swapper/209:13:032
9446992323,0cyclictest3199-21diskmemload11:39:201
9446992323,0cyclictest0-21swapper/112:31:461
9446992323,0cyclictest0-21swapper/112:28:361
9446992323,0cyclictest0-21swapper/111:44:431
9446992323,0cyclictest0-21swapper/110:51:051
9446992323,0cyclictest0-21swapper/110:25:291
9446992323,0cyclictest0-21swapper/110:02:081
9446992323,0cyclictest0-21swapper/109:39:391
9446992323,0cyclictest0-21swapper/109:18:191
9446992321,1cyclictest19808-21ssh09:25:091
9446992321,1cyclictest0-21swapper/110:21:191
9446992321,1cyclictest0-21swapper/110:11:061
9446992321,1cyclictest0-21swapper/110:08:441
9446992321,1cyclictest0-21swapper/108:30:001
9446992320,2cyclictest0-21swapper/112:15:021
944699230,2cyclictest30041-21runrttasks11:06:231
944699230,23cyclictest0-21swapper/111:26:281
944699230,23cyclictest0-21swapper/111:20:501
944699230,22cyclictest9302-21ssh09:46:031
944699230,22cyclictest3687-21rm09:10:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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