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2026-05-15 - 07:21

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 May 15, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2038992623,2cyclictest31366-21interrupts23:07:163
203899250,24cyclictest0-21swapper/323:18:343
2034992523,1cyclictest0-21swapper/221:55:102
203499250,24cyclictest32043-21ssh00:05:342
203499250,24cyclictest28052-21diskmemload22:33:022
203499250,24cyclictest28052-21diskmemload00:01:592
203499250,1cyclictest0-21swapper/221:13:152
203499250,1cyclictest0-21swapper/220:42:092
203399250,24cyclictest22271-21ssh21:32:211
203399250,24cyclictest0-21swapper/123:21:411
203399250,24cyclictest0-21swapper/100:28:311
2032992523,1cyclictest0-21swapper/021:57:090
203299250,24cyclictest0-21swapper/022:46:200
203899240,24cyclictest28052-21diskmemload22:20:533
203899240,23cyclictest28052-21diskmemload23:34:033
203899240,23cyclictest18473-21basename20:50:013
203899240,23cyclictest0-21swapper/321:45:133
203899240,23cyclictest0-21swapper/300:34:563
203899240,23cyclictest0-21swapper/300:12:363
203899240,1cyclictest30850-21ssh21:40:593
2034992422,1cyclictest0-21swapper/222:13:172
2034992422,1cyclictest0-21swapper/222:13:172
203499240,23cyclictest0-21swapper/221:43:192
203399240,23cyclictest6277-21sh23:42:151
203399240,23cyclictest5720-21sh21:18:201
203399240,23cyclictest28052-21diskmemload22:58:051
203399240,23cyclictest28052-21diskmemload21:52:411
203399240,23cyclictest0-21swapper/122:51:331
203399240,23cyclictest0-21swapper/121:43:371
203399240,23cyclictest0-21swapper/100:30:321
203399240,1cyclictest28052-21diskmemload21:26:071
203399240,0cyclictest0-21swapper/123:52:141
2032992424,0cyclictest28052-21diskmemload21:37:140
2032992423,1cyclictest28052-21diskmemload23:31:460
203299242,0cyclictest0-21swapper/022:23:530
203299240,24cyclictest0-21swapper/000:03:120
203299240,23cyclictest6598-21rm21:19:330
203299240,23cyclictest32522-21sh22:39:470
203299240,23cyclictest28092-21idleruntime-cro21:10:000
203299240,1cyclictest20281-21ssh21:32:020
203299240,1cyclictest0-21swapper/000:30:000
203299240,0cyclictest0-21swapper/000:23:370
203299240,0cyclictest0-21swapper/000:18:260
2038992323,0cyclictest28052-21diskmemload22:01:113
2038992323,0cyclictest14104-21apt-get20:42:083
2038992323,0cyclictest0-21swapper/323:01:353
2038992323,0cyclictest0-21swapper/300:20:393
2038992322,1cyclictest28052-21diskmemload22:05:203
2038992321,1cyclictest0-21swapper/322:58:003
2038992321,1cyclictest0-21swapper/322:41:383
2038992321,1cyclictest0-21swapper/322:17:493
2038992321,1cyclictest0-21swapper/300:25:333
203899230,23cyclictest0-21swapper/323:57:333
203899230,23cyclictest0-21swapper/323:38:033
203899230,23cyclictest0-21swapper/322:46:033
203899230,23cyclictest0-21swapper/322:37:123
203899230,23cyclictest0-21swapper/322:11:213
203899230,23cyclictest0-21swapper/322:11:213
203899230,23cyclictest0-21swapper/321:55:013
203899230,23cyclictest0-21swapper/300:06:093
203899230,22cyclictest6478-21perf20:25:003
203899230,22cyclictest29993-21ssh00:02:593
203899230,22cyclictest22687-21ssh22:31:343
203899230,22cyclictest21288-21apt-get20:57:093
203899230,22cyclictest14842-21ssh23:21:593
203899230,1cyclictest0-21swapper/321:20:043
203899230,0cyclictest28052-21diskmemload22:28:263
203899230,0cyclictest28052-21diskmemload21:39:373
203899230,0cyclictest0-21swapper/322:54:403
203899230,0cyclictest0-21swapper/321:12:483
2034992323,0cyclictest28052-21diskmemload22:45:192
2034992323,0cyclictest0-21swapper/223:43:492
2034992323,0cyclictest0-21swapper/200:35:352
2034992321,1cyclictest0-21swapper/223:16:152
2034992321,1cyclictest0-21swapper/223:12:342
2034992321,1cyclictest0-21swapper/222:57:292
2034992321,1cyclictest0-21swapper/221:48:062
2034992320,2cyclictest11162-21sh22:21:112
203499231,21cyclictest15630-21ssh23:51:112
203499230,2cyclictest10713-21ssh23:47:102
203499230,23cyclictest0-21swapper/200:26:512
203499230,22cyclictest28052-21diskmemload00:17:002
203499230,22cyclictest21351-21latency_hist22:30:012
203499230,22cyclictest0-21swapper/223:56:092
203499230,22cyclictest0-21swapper/223:20:132
203499230,22cyclictest0-21swapper/221:27:102
203499230,1cyclictest0-21swapper/221:30:332
203499230,0cyclictest0-21swapper/222:51:242
203499230,0cyclictest0-21swapper/221:20:382
2033992323,0cyclictest0-21swapper/123:57:051
2033992323,0cyclictest0-21swapper/123:05:321
2033992323,0cyclictest0-21swapper/122:14:151
2033992323,0cyclictest0-21swapper/122:14:151
2033992323,0cyclictest0-21swapper/122:05:041
2033992323,0cyclictest0-21swapper/121:55:251
2033992323,0cyclictest0-21swapper/121:10:291
2033992323,0cyclictest0-21swapper/100:00:341
2033992321,1cyclictest619-21polkitd21:10:001
2033992321,1cyclictest4833-21apt-get19:17:071
2033992320,2cyclictest11280-21ssh23:17:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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