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2026-03-27 - 12:21

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 Mar 27, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10256992520,4cyclictest0-21swapper/222:24:502
10256992517,0cyclictest0-21swapper/222:35:042
1025699251,1cyclictest271rcuc/200:25:182
1025699250,1cyclictest21893-21sendmail-msp20:40:012
10251992523,1cyclictest0-21swapper/100:20:231
1025199250,24cyclictest0-21swapper/123:15:041
1025199250,24cyclictest0-21swapper/100:05:581
1025199250,1cyclictest4302-21diskmemload21:19:131
10247992524,1cyclictest4302-21diskmemload22:37:390
1024799250,24cyclictest30055-21ssh00:29:130
1024799250,24cyclictest0-21swapper/022:54:140
1026099240,1cyclictest10363-21ssh21:16:383
1026099240,0cyclictest0-21swapper/300:04:283
10256992423,1cyclictest28-21ksoftirqd/223:45:012
10256992422,1cyclictest8350-21cron22:30:012
1025699240,24cyclictest0-21swapper/221:58:152
1025699240,23cyclictest6008-21idleruntime-cro21:50:002
1025699240,23cyclictest0-21swapper/223:08:442
1025699240,23cyclictest0-21swapper/200:13:032
1025699240,1cyclictest0-21swapper/221:24:512
10251992420,0cyclictest151rcu_preempt00:37:371
1025199240,23cyclictest0-21swapper/123:41:501
1025199240,23cyclictest0-21swapper/123:20:581
1025199240,23cyclictest0-21swapper/122:17:421
1025199240,1cyclictest0-21swapper/121:21:541
1025199240,0cyclictest0-21swapper/100:27:261
10247992424,0cyclictest62550irq/127-eno121:56:520
10247992421,2cyclictest0-21swapper/023:43:030
1024799240,2cyclictest20583-21rm23:15:080
1024799240,24cyclictest4302-21diskmemload23:02:200
1024799240,23cyclictest9862-21dump-pmu-power00:10:000
1024799240,23cyclictest4302-21diskmemload00:35:060
1024799240,23cyclictest28456-21ssh21:34:230
1024799240,23cyclictest19639-21ssh21:25:330
1024799240,23cyclictest0-21swapper/022:00:290
1024799240,23cyclictest0-21swapper/021:10:170
10260992323,0cyclictest7707-21ssh21:52:273
10260992323,0cyclictest0-21swapper/323:40:403
10260992323,0cyclictest0-21swapper/323:14:423
10260992323,0cyclictest0-21swapper/322:40:513
10260992323,0cyclictest0-21swapper/322:06:013
10260992323,0cyclictest0-21swapper/321:22:023
10260992323,0cyclictest0-21swapper/300:13:493
1026099230,23cyclictest0-21swapper/323:31:153
1026099230,23cyclictest0-21swapper/322:58:543
1026099230,23cyclictest0-21swapper/322:53:163
1026099230,23cyclictest0-21swapper/322:45:513
1026099230,23cyclictest0-21swapper/321:10:553
1026099230,23cyclictest0-21swapper/300:25:053
1026099230,23cyclictest0-21swapper/300:17:173
1026099230,22cyclictest31359-21ssh23:26:353
1026099230,22cyclictest30715-21sh21:37:463
1026099230,22cyclictest27089-21ssh23:22:413
1026099230,22cyclictest21893-21sendmail-msp20:40:013
1026099230,0cyclictest0-21swapper/322:36:503
1026099230,0cyclictest0-21swapper/322:27:243
1026099230,0cyclictest0-21swapper/322:10:133
1026099230,0cyclictest0-21swapper/322:10:133
10256992323,0cyclictest0-21swapper/222:55:162
10256992323,0cyclictest0-21swapper/221:43:132
10256992323,0cyclictest0-21swapper/200:35:352
10256992323,0cyclictest0-21swapper/200:21:032
10256992322,1cyclictest28-21ksoftirqd/223:01:472
10256992322,1cyclictest28-21ksoftirqd/222:15:042
1025699232,1cyclictest28-21ksoftirqd/223:45:412
1025699232,1cyclictest28-21ksoftirqd/223:18:142
10256992321,2cyclictest4302-21diskmemload21:51:112
10256992321,2cyclictest27881-21ssh21:33:182
10256992321,1cyclictest30740-21ssh23:25:362
10256992321,1cyclictest271rcuc/221:15:002
10256992321,1cyclictest0-21swapper/222:13:152
10256992321,1cyclictest0-21swapper/222:13:152
1025699230,23cyclictest0-21swapper/223:53:312
1025699230,23cyclictest0-21swapper/222:09:062
1025699230,23cyclictest0-21swapper/221:35:202
1025699230,22cyclictest5640-21sh00:05:522
1025699230,22cyclictest4302-21diskmemload23:35:052
1025699230,22cyclictest313-21systemd-journal21:30:012
1025699230,22cyclictest271rcuc/222:30:322
1025699230,22cyclictest19955-21ssh00:19:372
1025699230,0cyclictest0-21swapper/223:23:152
10251992323,0cyclictest0-21swapper/123:11:271
10251992323,0cyclictest0-21swapper/122:35:381
10251992321,1cyclictest0-21swapper/122:25:021
10251992321,1cyclictest0-21swapper/121:53:471
10251992321,1cyclictest0-21swapper/121:37:511
1025199230,2cyclictest23151-21sh22:44:571
1025199230,23cyclictest0-21swapper/123:57:561
1025199230,23cyclictest0-21swapper/122:12:481
1025199230,23cyclictest0-21swapper/122:12:481
1025199230,22cyclictest5095-21sh21:48:261
1025199230,22cyclictest4302-21diskmemload23:27:071
1025199230,22cyclictest0-21swapper/123:37:031
1025199230,22cyclictest0-21swapper/123:01:581
1025199230,22cyclictest0-21swapper/122:50:561
1025199230,1cyclictest24081-21sh23:52:291
1025199230,0cyclictest0-21swapper/123:46:391
1025199230,0cyclictest0-21swapper/122:48:031
1025199230,0cyclictest0-21swapper/122:32:351
1025199230,0cyclictest0-21swapper/122:20:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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