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2026-09-22 - 10:56

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 Sep 22, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2518199280,1cyclictest0-21swapper/300:12:213
2518199270,23cyclictest19233-21diskmemload22:35:093
2518199270,21cyclictest0-21swapper/321:42:543
2518199263,22cyclictest11931-21cron19:50:003
25181992623,3cyclictest0-21swapper/322:01:533
2518199260,25cyclictest29097-21ssh21:47:533
2518199260,25cyclictest19394-21ssh00:32:183
2518199260,1cyclictest2500-21perl23:47:553
2518099260,22cyclictest151rcu_preempt23:58:502
25179992624,1cyclictest0-21swapper/122:23:011
25181992523,1cyclictest13207-21dump-pmu-power22:30:013
25181992520,4cyclictest5125-21sh21:26:093
2518199250,24cyclictest31899-21sh23:44:463
2518199250,24cyclictest16297-21ssh23:02:553
2518199250,24cyclictest16297-21ssh23:02:553
2518199250,24cyclictest0-21swapper/300:29:213
2518199250,21cyclictest0-21swapper/323:30:443
2518199250,1cyclictest6724-21sh00:20:143
2518199250,1cyclictest12086-21ssh23:27:453
2517999250,24cyclictest0-21swapper/120:12:551
2517899250,25cyclictest0-21swapper/022:07:130
25181992422,1cyclictest0-21swapper/323:58:133
2518199240,23cyclictest19233-21diskmemload23:21:323
2518199240,23cyclictest0-21swapper/321:10:033
25180992422,1cyclictest0-21swapper/200:15:352
2518099240,23cyclictest0-21swapper/200:28:102
2518099240,1cyclictest19233-21diskmemload00:34:262
25179992423,1cyclictest0-21swapper/122:50:581
2517999240,24cyclictest0-21swapper/123:30:111
2517999240,23cyclictest32628-21sh23:45:331
2517999240,23cyclictest18768-21apt-get00:02:541
2517999240,23cyclictest0-21swapper/123:23:531
2517999240,1cyclictest9249-21ssh22:55:461
2517999240,1cyclictest0-21swapper/122:09:191
25178992423,1cyclictest6992-21ssh00:20:340
25178992423,1cyclictest2998-21ssh23:18:150
2517899240,24cyclictest19233-21diskmemload22:00:220
2517899240,24cyclictest0-21swapper/022:57:190
25181992323,0cyclictest0-21swapper/322:46:183
25181992320,3cyclictest19650-21apt-get20:07:573
25181992320,3cyclictest0-21swapper/323:53:543
25181992320,3cyclictest0-21swapper/322:12:123
25181992319,3cyclictest0-21swapper/319:22:533
2518199230,23cyclictest19233-21diskmemload23:10:213
2518199230,23cyclictest0-21swapper/322:30:413
2518199230,22cyclictest2364-21apt-get21:52:543
2518199230,22cyclictest20577-21sh22:07:583
2518199230,22cyclictest19233-21diskmemload21:55:163
2518199230,20cyclictest0-21swapper/323:36:593
2518199230,0cyclictest19233-21diskmemload22:53:283
2518199230,0cyclictest19233-21diskmemload21:17:013
25180992323,0cyclictest0-21swapper/222:49:132
25180992323,0cyclictest0-21swapper/222:16:472
25180992323,0cyclictest0-21swapper/222:01:222
25180992323,0cyclictest0-21swapper/200:39:182
25180992321,1cyclictest0-21swapper/223:31:262
25180992320,2cyclictest7666-21diskmemload00:21:352
25180992320,2cyclictest14025-21munin-plugin-st23:00:002
2518099230,23cyclictest0-21swapper/223:16:102
2518099230,23cyclictest0-21swapper/222:25:542
2518099230,23cyclictest0-21swapper/222:21:402
2518099230,23cyclictest0-21swapper/222:07:482
2518099230,22cyclictest5954-21ssh21:27:202
2518099230,22cyclictest28676-21rm22:43:252
2518099230,22cyclictest21609-21ssh23:07:382
2518099230,22cyclictest19233-21diskmemload22:13:542
2518099230,22cyclictest1108-21ssh23:46:532
2518099230,22cyclictest0-21swapper/223:40:122
2518099230,22cyclictest0-21swapper/200:11:222
2518099230,0cyclictest19233-21diskmemload23:24:462
25179992321,1cyclictest9634-21needreboot00:23:001
25179992321,1cyclictest23265-21ssh00:35:011
25179992321,1cyclictest0-21swapper/123:16:391
25179992320,2cyclictest31563-21sh23:44:201
25179992320,2cyclictest23765-21sh00:07:111
2517999230,23cyclictest12519-21ssh23:57:011
2517999230,22cyclictest9572-21sh22:27:261
2517999230,22cyclictest0-21swapper/122:10:181
2517999230,22cyclictest0-21swapper/122:04:001
2517999230,22cyclictest0-21swapper/100:26:481
2517999230,0cyclictest0-21swapper/121:58:581
2517999230,0cyclictest0-21swapper/121:33:391
2517999230,0cyclictest0-21swapper/100:31:421
25178992323,0cyclictest19233-21diskmemload21:35:060
25178992323,0cyclictest0-21swapper/022:53:010
25178992323,0cyclictest0-21swapper/022:26:090
25178992323,0cyclictest0-21swapper/022:16:310
25178992323,0cyclictest0-21swapper/021:55:470
25178992323,0cyclictest0-21swapper/000:10:190
25178992321,1cyclictest30582-21ssh23:14:180
2517899230,23cyclictest19233-21diskmemload21:31:020
2517899230,23cyclictest19233-21diskmemload21:16:010
2517899230,23cyclictest19233-21diskmemload00:18:340
2517899230,23cyclictest0-21swapper/023:36:370
2517899230,23cyclictest0-21swapper/000:06:210
2517899230,22cyclictest782-21ntp_kernel_err22:47:590
2517899230,22cyclictest28161-21sh23:42:050
2517899230,22cyclictest27727-21sh21:46:020
2517899230,22cyclictest24225-21cron22:40:000
2517899230,22cyclictest23676-21ssh00:35:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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