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2026-04-16 - 04:23

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 Thu Apr 16, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2050599270,23cyclictest0-21swapper/200:08:212
2050599270,1cyclictest0-21swapper/223:51:002
20510992614,4cyclictest14942-21diskmemload23:18:473
20510992610,15cyclictest18337-21ssh23:53:483
2051099260,2cyclictest6598-21latency_hist22:05:003
20505992622,4cyclictest14942-21diskmemload22:50:532
2050599260,25cyclictest790-21sshd00:28:462
2050599260,25cyclictest0-21swapper/221:28:372
2050599260,1cyclictest0-21swapper/223:06:382
2050599260,0cyclictest0-21swapper/223:00:062
2050599260,0cyclictest0-21swapper/223:00:062
20510992523,1cyclictest0-21swapper/323:13:363
20510992521,3cyclictest0-21swapper/322:52:293
2051099250,25cyclictest0-21swapper/321:10:203
2051099250,24cyclictest31105-21apt-get23:34:423
2051099250,24cyclictest14942-21diskmemload00:39:193
2051099250,24cyclictest0-21swapper/322:34:103
2051099250,22cyclictest0-21swapper/300:08:183
2051099250,1cyclictest0-21swapper/321:51:183
2051099250,1cyclictest0-21swapper/300:26:303
20505992521,3cyclictest0-21swapper/223:43:172
20505992519,5cyclictest3541-21apt-get19:44:412
2050599250,24cyclictest0-21swapper/223:36:312
2050599250,24cyclictest0-21swapper/200:33:052
2050599250,21cyclictest0-21swapper/221:35:552
20501992523,1cyclictest0-21swapper/121:41:491
2050199250,24cyclictest14942-21diskmemload22:37:411
2049899252,22cyclictest13-21ksoftirqd/022:53:080
20510992424,0cyclictest0-21swapper/321:16:243
20510992422,1cyclictest19383-21ssh22:19:063
20510992421,3cyclictest0-21swapper/323:43:173
20510992420,3cyclictest0-21swapper/321:32:393
20510992420,3cyclictest0-21swapper/300:34:243
20510992419,4cyclictest0-21swapper/319:44:413
2051099240,24cyclictest0-21swapper/300:16:223
2051099240,23cyclictest14942-21diskmemload23:45:233
2051099240,23cyclictest0-21swapper/322:20:463
2051099240,23cyclictest0-21swapper/322:09:443
2051099240,23cyclictest0-21swapper/321:39:293
2051099240,1cyclictest14942-21diskmemload23:03:003
2051099240,1cyclictest14942-21diskmemload23:03:003
2051099240,0cyclictest17948-21ssh22:49:373
2051099240,0cyclictest0-21swapper/323:36:313
2051099240,0cyclictest0-21swapper/323:22:293
2051099240,0cyclictest0-21swapper/322:25:023
20505992421,2cyclictest0-21swapper/221:30:062
20505992420,3cyclictest0-21swapper/221:51:232
20505992420,3cyclictest0-21swapper/221:11:092
2050599240,3cyclictest0-21swapper/222:36:322
2050599240,23cyclictest0-21swapper/223:22:292
2050599240,21cyclictest20491-21cyclictest22:12:362
2050599240,1cyclictest14942-21diskmemload00:38:262
2050599240,0cyclictest14942-21diskmemload22:04:522
2050599240,0cyclictest0-21swapper/222:58:532
2050599240,0cyclictest0-21swapper/200:02:072
2050199240,0cyclictest0-21swapper/122:07:191
2050199240,0cyclictest0-21swapper/100:15:231
20498992423,1cyclictest14104-21ssh21:40:570
2049899240,24cyclictest0-21swapper/021:39:270
2049899240,24cyclictest0-21swapper/021:17:210
2049899240,23cyclictest0-21swapper/022:46:170
2049899240,0cyclictest14942-21diskmemload23:59:150
2049899240,0cyclictest14942-21diskmemload23:22:360
20510992318,4cyclictest0-21swapper/300:02:033
20510992316,6cyclictest14919-21latency_hist20:05:003
2051099230,2cyclictest5568-21taskset23:09:113
2051099230,23cyclictest0-21swapper/323:25:513
2051099230,23cyclictest0-21swapper/321:43:083
2051099230,23cyclictest0-21swapper/321:28:503
2051099230,22cyclictest5274-21ssh22:35:253
2051099230,22cyclictest24523-21basename20:25:003
2051099230,22cyclictest10309-21ssh22:40:163
2051099230,1cyclictest452-21perf19:35:003
2051099230,0cyclictest14942-21diskmemload22:58:543
2051099230,0cyclictest14942-21diskmemload00:23:243
20505992323,0cyclictest14942-21diskmemload23:48:072
20505992323,0cyclictest0-21swapper/223:25:512
20505992323,0cyclictest0-21swapper/221:16:242
20505992321,1cyclictest27689-21munin-run19:25:002
20505992320,3cyclictest0-21swapper/223:15:502
20505992319,3cyclictest0-21swapper/221:55:362
2050599230,23cyclictest0-21swapper/221:49:012
2050599230,23cyclictest0-21swapper/200:23:242
2050599230,22cyclictest0-21swapper/223:32:102
2050599230,20cyclictest0-21swapper/222:45:152
2050599230,1cyclictest14942-21diskmemload23:55:182
2050599230,0cyclictest0-21swapper/222:31:532
2050599230,0cyclictest0-21swapper/222:20:462
2050599230,0cyclictest0-21swapper/222:09:442
2050599230,0cyclictest0-21swapper/221:24:562
2050599230,0cyclictest0-21swapper/220:24:432
20501992323,0cyclictest14942-21diskmemload22:51:081
20501992323,0cyclictest14942-21diskmemload21:12:201
20501992323,0cyclictest0-21swapper/123:12:231
20501992323,0cyclictest0-21swapper/123:00:041
20501992323,0cyclictest0-21swapper/123:00:041
20501992323,0cyclictest0-21swapper/100:13:531
20501992321,1cyclictest14298-21ssh23:16:541
20501992321,1cyclictest0-21swapper/123:24:521
20501992321,1cyclictest0-21swapper/121:19:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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