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2026-07-05 - 09:42

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 Sun Jul 05, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2102899253,21cyclictest14230-21diskmemload00:36:553
2102899250,24cyclictest15685-21ssh22:08:183
2102899250,24cyclictest14230-21diskmemload00:31:403
2102899250,24cyclictest0-21swapper/322:26:293
2102899250,1cyclictest20483-21apt-get23:11:203
21023992523,1cyclictest0-21swapper/222:44:552
2102399250,24cyclictest0-21swapper/221:44:122
2102399250,1cyclictest28789-21ssh21:21:322
2102199250,24cyclictest14230-21diskmemload00:36:071
2102199250,24cyclictest0-21swapper/123:40:321
2102199250,24cyclictest0-21swapper/121:40:061
2101799250,25cyclictest18031-21ssh23:08:170
21028992422,1cyclictest8552-21apt-get19:51:223
2102899240,23cyclictest24405-21sh23:42:563
2102899240,23cyclictest14230-21diskmemload22:00:363
2102899240,23cyclictest12804-21rm00:01:323
2102899240,1cyclictest0-21swapper/322:56:583
2102899240,0cyclictest0-21swapper/321:31:503
21023992423,1cyclictest14698-21cron23:35:012
21023992423,1cyclictest0-21swapper/222:51:522
21023992423,1cyclictest0-21swapper/221:37:582
2102399240,23cyclictest0-21swapper/222:25:232
2102399240,23cyclictest0-21swapper/221:10:262
2102399240,23cyclictest0-21swapper/200:33:532
2102399240,22cyclictest0-21swapper/221:59:352
2102399240,1cyclictest14230-21diskmemload00:28:302
2102399240,1cyclictest14230-21diskmemload00:01:442
21021992424,0cyclictest0-21swapper/100:32:331
21021992421,2cyclictest23388-21turbostat.cron19:15:001
21021992421,2cyclictest15962-21cron21:40:001
2102199240,24cyclictest0-21swapper/100:18:101
2102199240,23cyclictest3379-21sendmail19:40:011
2102199240,23cyclictest14230-21diskmemload23:12:511
2102199240,23cyclictest0-21swapper/121:28:261
2102199240,1cyclictest0-21swapper/100:05:431
2102199240,0cyclictest14230-21diskmemload23:39:261
21017992424,0cyclictest0-21swapper/022:46:110
2101799240,2cyclictest6278-21perl23:56:240
2101799240,24cyclictest0-21swapper/021:31:450
2101799240,24cyclictest0-21swapper/000:11:150
2101799240,23cyclictest11343-21sh21:36:020
2101799240,1cyclictest6967-21ssh23:27:040
2101799240,0cyclictest14230-21diskmemload22:05:160
21028992323,0cyclictest14230-21diskmemload23:35:133
21028992323,0cyclictest14230-21diskmemload21:57:353
21028992322,1cyclictest19854-21perl22:41:253
21028992321,1cyclictest14968-21ssh21:10:373
21028992321,1cyclictest14230-21diskmemload21:17:553
21028992321,1cyclictest0-21swapper/323:25:123
21028992321,1cyclictest0-21swapper/300:16:343
2102899231,21cyclictest14230-21diskmemload21:40:363
2102899230,23cyclictest14230-21diskmemload22:47:073
2102899230,23cyclictest0-21swapper/323:58:363
2102899230,23cyclictest0-21swapper/322:37:343
2102899230,23cyclictest0-21swapper/321:50:363
2102899230,23cyclictest0-21swapper/300:28:083
2102899230,22cyclictest9442-21ssh23:30:123
2102899230,22cyclictest32156-21ssh21:25:143
2102899230,22cyclictest30170-21taskset22:50:503
2102899230,22cyclictest23270-21irqstats00:11:263
2102899230,22cyclictest18279-21ssh23:08:363
2102899230,1cyclictest0-21swapper/322:33:213
2102899230,0cyclictest0-21swapper/321:21:383
21023992323,0cyclictest0-21swapper/223:21:072
21023992323,0cyclictest0-21swapper/223:15:582
21023992323,0cyclictest0-21swapper/223:12:532
21023992323,0cyclictest0-21swapper/223:05:062
21023992321,1cyclictest24329-21hddtemp_smartct22:16:252
21023992321,1cyclictest0-21swapper/223:54:112
21023992321,1cyclictest0-21swapper/200:20:442
2102399230,2cyclictest9474-21awk21:00:012
2102399230,23cyclictest0-21swapper/221:16:382
2102399230,23cyclictest0-21swapper/200:35:112
2102399230,22cyclictest32341-21ssh21:54:392
2102399230,22cyclictest20229-21basename20:15:012
2102399230,22cyclictest14230-21diskmemload23:41:372
2102399230,22cyclictest12542-21apt22:06:222
2102399230,22cyclictest0-21swapper/223:36:372
2102399230,22cyclictest0-21swapper/222:11:252
2102399230,22cyclictest0-21swapper/221:45:192
2102399230,22cyclictest0-21swapper/221:45:192
2102399230,1cyclictest0-21swapper/222:36:362
2102399230,0cyclictest0-21swapper/222:32:092
2102399230,0cyclictest0-21swapper/222:04:512
21021992321,1cyclictest22683-21basename20:20:011
21021992321,1cyclictest0-21swapper/123:01:331
21021992321,1cyclictest0-21swapper/122:35:451
21021992321,1cyclictest0-21swapper/100:20:221
21021992320,2cyclictest32278-21basename20:40:001
21021992320,2cyclictest31597-21sh23:21:181
21021992320,2cyclictest28072-21ssh21:50:581
21021992320,2cyclictest26212-21ssh23:45:101
21021992320,2cyclictest14230-21diskmemload21:17:151
2102199230,23cyclictest0-21swapper/123:26:231
2102199230,23cyclictest0-21swapper/122:06:381
2102199230,23cyclictest0-21swapper/121:10:511
2102199230,22cyclictest9725-21ssh21:33:561
2102199230,22cyclictest23609-21/usr/sbin/munin22:16:251
2102199230,22cyclictest2023-21ssh22:54:301
2102199230,22cyclictest18492-21ssh22:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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