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2026-05-26 - 11:14

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 May 26, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23795992624,1cyclictest14468-21apt-get22:33:031
23804992523,1cyclictest0-21swapper/300:22:383
2380499250,1cyclictest0-21swapper/323:15:563
2379799250,24cyclictest18858-21apt-get00:03:052
2379799250,24cyclictest18217-21diskmemload23:20:532
2379799250,24cyclictest18217-21diskmemload21:52:132
2379799250,24cyclictest0-21swapper/223:11:212
2379599250,24cyclictest8343-21apt-get20:53:051
2379599250,24cyclictest32359-21latency_hist22:20:001
2379599250,24cyclictest2166-21ssh21:53:111
2379599250,24cyclictest0-21swapper/123:09:131
2379599250,1cyclictest2658-21chrt21:24:591
23791992523,1cyclictest27018-21cat23:13:050
2379199250,24cyclictest24242-21apt-get19:13:050
2379199250,24cyclictest18217-21diskmemload21:19:430
23804992423,1cyclictest0-21swapper/300:07:083
23804992422,1cyclictest5894-21cron22:25:003
2380499240,23cyclictest21089-21apt-get20:13:053
23797992423,1cyclictest18217-21diskmemload23:55:512
23797992423,1cyclictest0-21swapper/222:37:122
23797992419,4cyclictest0-21swapper/221:42:212
2379799240,23cyclictest18217-21diskmemload21:21:172
2379799240,23cyclictest0-21swapper/223:06:272
2379799240,23cyclictest0-21swapper/200:32:022
2379799240,0cyclictest0-21swapper/223:52:162
23795992424,0cyclictest0-21swapper/123:26:251
2379599240,23cyclictest12099-21awk00:25:011
2379599240,0cyclictest18217-21diskmemload00:04:561
2379599240,0cyclictest0-21swapper/122:58:391
2379599240,0cyclictest0-21swapper/100:12:591
23791992424,0cyclictest18217-21diskmemload21:23:310
23791992424,0cyclictest0-21swapper/023:03:220
23791992423,1cyclictest62550irq/127-eno100:32:170
23791992423,1cyclictest11035-21ssh23:55:070
23791992423,1cyclictest0-21swapper/023:44:010
23791992420,3cyclictest24426-21cron23:10:000
2379199240,24cyclictest0-21swapper/022:33:410
2379199240,24cyclictest0-21swapper/021:52:250
2379199240,24cyclictest0-21swapper/021:40:580
2379199240,23cyclictest313-21systemd-journal21:35:000
2379199240,0cyclictest0-21swapper/021:26:110
23804992323,0cyclictest18217-21diskmemload23:47:363
23804992323,0cyclictest18217-21diskmemload22:14:353
23804992323,0cyclictest0-21swapper/322:59:153
23804992323,0cyclictest0-21swapper/300:15:573
23804992321,1cyclictest0-21swapper/323:32:343
23804992321,1cyclictest0-21swapper/321:45:023
2380499231,21cyclictest0-21swapper/321:13:153
2380499230,23cyclictest0-21swapper/322:19:053
2380499230,23cyclictest0-21swapper/322:07:383
2380499230,22cyclictest31432-21munin-run23:45:013
2380499230,22cyclictest25788-21turbostat20:20:003
2380499230,22cyclictest23554-21ssh22:40:093
2380499230,22cyclictest18217-21diskmemload22:31:053
2380499230,22cyclictest18217-21diskmemload21:51:533
2380499230,22cyclictest18217-21diskmemload21:23:123
2380499230,22cyclictest18217-21diskmemload00:27:153
2380499230,22cyclictest18217-21diskmemload00:10:483
2380499230,22cyclictest0-21swapper/300:33:503
2380499230,0cyclictest18217-21diskmemload23:55:483
2380499230,0cyclictest18217-21diskmemload23:06:383
2380499230,0cyclictest18217-21diskmemload23:03:213
2380499230,0cyclictest0-21swapper/323:11:423
2380499230,0cyclictest0-21swapper/322:38:563
2380499230,0cyclictest0-21swapper/321:15:483
2380499230,0cyclictest0-21swapper/300:35:223
23797992323,0cyclictest0-21swapper/223:45:252
23797992323,0cyclictest0-21swapper/222:05:382
23797992321,2cyclictest28071-21sh23:42:492
23797992321,1cyclictest0-21swapper/223:36:212
23797992321,1cyclictest0-21swapper/223:31:272
23797992321,1cyclictest0-21swapper/221:16:532
23797992320,2cyclictest13235-21perf23:00:012
23797992319,0cyclictest0-21swapper/222:30:042
2379799230,3cyclictest0-21swapper/221:10:562
2379799230,2cyclictest18217-21diskmemload22:00:012
2379799230,22cyclictest17792-21perf00:30:012
2379799230,22cyclictest0-21swapper/221:36:512
2379799230,1cyclictest0-21swapper/221:31:032
2379799230,0cyclictest0-21swapper/223:04:252
2379799230,0cyclictest0-21swapper/222:29:442
2379799230,0cyclictest0-21swapper/200:37:472
23795992323,0cyclictest0-21swapper/123:00:171
23795992323,0cyclictest0-21swapper/121:30:521
23795992322,1cyclictest18217-21diskmemload00:27:491
23795992321,1cyclictest0-21swapper/100:15:541
2379599230,2cyclictest22903-21sh21:13:491
2379599230,2cyclictest20197-21munin-plugin-st23:35:011
2379599230,2cyclictest1885-21ssh23:48:001
2379599230,23cyclictest18217-21diskmemload22:38:331
2379599230,23cyclictest0-21swapper/122:50:391
2379599230,23cyclictest0-21swapper/100:30:141
2379599230,22cyclictest5645-21sh23:50:331
2379599230,22cyclictest30662-21perf20:30:011
2379599230,22cyclictest26754-21ssh22:15:011
2379599230,22cyclictest26298-21ssh21:46:031
2379599230,22cyclictest26207-21munin-run19:15:001
2379599230,22cyclictest22681-21sh00:05:371
2379599230,22cyclictest13368-21cron19:55:011
2379599230,22cyclictest1084-21sh22:20:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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