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2026-06-20 - 05:07

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 Sat Jun 20, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70299250,24cyclictest20061-21diskstats00:35:103
69799250,24cyclictest4063-21ssh23:49:442
69799250,24cyclictest0-21swapper/200:39:402
69799250,23cyclictest27574-21diskmemload21:11:332
69499250,25cyclictest0-21swapper/122:54:301
69499250,24cyclictest0-21swapper/123:12:431
692992523,1cyclictest0-21swapper/000:17:490
70299240,24cyclictest27574-21diskmemload22:39:063
70299240,24cyclictest0-21swapper/323:49:333
70299240,23cyclictest27574-21diskmemload21:42:453
70299240,0cyclictest27574-21diskmemload22:44:543
697992424,0cyclictest0-21swapper/223:52:462
69799240,23cyclictest27574-21diskmemload23:36:582
69799240,23cyclictest0-21swapper/222:51:222
69799240,23cyclictest0-21swapper/222:36:052
694992422,1cyclictest10279-21cron19:30:011
694992422,1cyclictest0-21swapper/121:39:111
69499241,22cyclictest20731-21cstates00:05:111
69499240,24cyclictest0-21swapper/100:31:531
69499240,23cyclictest5515-21munin-run19:20:011
69499240,23cyclictest29800-21sh23:42:401
69499240,23cyclictest25111-21cron20:00:011
69499240,23cyclictest0-21swapper/122:14:301
69499240,0cyclictest27574-21diskmemload23:58:361
69499240,0cyclictest0-21swapper/119:35:021
692992423,1cyclictest14289-21ssh22:27:220
692992423,1cyclictest0-21swapper/021:30:340
692992420,3cyclictest25378-21diskmemload23:39:330
69299240,24cyclictest0-21swapper/022:09:560
69299240,23cyclictest30055-21ssh22:11:250
69299240,23cyclictest27574-21diskmemload21:16:580
69299240,23cyclictest23213-21ssh00:37:550
69299240,23cyclictest0-21swapper/022:57:240
69299240,23cyclictest0-21swapper/022:16:360
69299240,1cyclictest25425-21apt-get20:00:080
702992323,0cyclictest27574-21diskmemload21:54:043
702992323,0cyclictest27574-21diskmemload00:25:223
702992323,0cyclictest0-21swapper/323:25:213
702992323,0cyclictest0-21swapper/323:04:423
702992322,1cyclictest27574-21diskmemload00:04:213
702992322,1cyclictest0-21swapper/323:39:163
702992321,1cyclictest31281-21sh21:13:013
702992320,2cyclictest18553-21sh00:33:543
702992320,2cyclictest12290-21ssh22:25:153
70299230,23cyclictest27574-21diskmemload22:34:453
70299230,23cyclictest24502-21ssh21:36:273
70299230,23cyclictest0-21swapper/321:31:083
70299230,23cyclictest0-21swapper/300:11:443
70299230,22cyclictest25037-21seq23:08:413
70299230,22cyclictest17996-21ssh23:31:223
70299230,22cyclictest1560-21ssh23:16:083
70299230,1cyclictest15262-21sh22:59:453
70299230,0cyclictest27574-21diskmemload21:18:033
70299230,0cyclictest0-21swapper/323:14:213
70299230,0cyclictest0-21swapper/322:22:503
697992323,0cyclictest0-21swapper/223:08:212
697992323,0cyclictest0-21swapper/222:13:152
697992323,0cyclictest0-21swapper/221:52:152
697992323,0cyclictest0-21swapper/221:42:492
697992323,0cyclictest0-21swapper/221:20:302
697992320,2cyclictest20598-21sh22:34:002
697992320,2cyclictest18287-21sh21:30:352
69799230,23cyclictest0-21swapper/223:10:292
69799230,23cyclictest0-21swapper/222:57:172
69799230,23cyclictest0-21swapper/222:42:452
69799230,23cyclictest0-21swapper/221:38:172
69799230,23cyclictest0-21swapper/200:29:562
69799230,23cyclictest0-21swapper/200:22:212
69799230,22cyclictest25188-21turbostat21:05:012
69799230,22cyclictest20036-21ssh23:04:002
69799230,22cyclictest19121-21ssh23:33:062
69799230,1cyclictest0-21swapper/223:16:202
69799230,0cyclictest0-21swapper/222:27:412
69799230,0cyclictest0-21swapper/221:48:532
69799230,0cyclictest0-21swapper/200:11:452
694992323,0cyclictest0-21swapper/123:25:371
694992323,0cyclictest0-21swapper/123:16:571
694992323,0cyclictest0-21swapper/122:21:571
694992323,0cyclictest0-21swapper/122:04:001
694992323,0cyclictest0-21swapper/121:17:471
694992322,0cyclictest0-21swapper/122:55:101
694992321,1cyclictest7594-21ssh21:50:181
694992321,1cyclictest32505-21apt-get21:45:081
694992321,1cyclictest0-21swapper/121:27:041
694992321,1cyclictest0-21swapper/120:40:001
694992320,2cyclictest2326-21sendmail20:20:001
69499230,2cyclictest32345-21perf20:15:011
69499230,23cyclictest0-21swapper/123:20:561
69499230,23cyclictest0-21swapper/122:31:011
69499230,22cyclictest4727-21awk00:20:131
69499230,22cyclictest0-21swapper/123:33:551
69499230,1cyclictest0-21swapper/122:47:341
69499230,1cyclictest0-21swapper/100:25:101
69499230,0cyclictest27574-21diskmemload23:51:111
69499230,0cyclictest27574-21diskmemload21:20:281
69499230,0cyclictest0-21swapper/123:47:331
69499230,0cyclictest0-21swapper/123:03:081
69499230,0cyclictest0-21swapper/122:15:171
69499230,0cyclictest0-21swapper/100:37:451
692992323,0cyclictest27574-21diskmemload21:11:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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