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2026-06-12 - 10:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #6

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 rack0slot6s.osadl.org (updated Fri Jun 12, 2026 00:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6333392271231,32sleep140-21swapper/1419:08:146
6331462248229,12sleep120-21swapper/1219:05:314
6333912247228,12sleep190-21swapper/1919:08:5811
6334152245207,12sleep00-21swapper/019:09:190
6331602244236,5sleep20-21swapper/219:05:4012
6334562241221,12sleep90-21swapper/919:09:4919
6331942240221,12sleep80-21swapper/819:06:0618
6334352239219,12sleep170-21swapper/1719:09:369
6333072239220,12sleep50-21swapper/519:07:4515
6332652239219,12sleep70-21swapper/719:07:0617
6332462239220,12sleep150-21swapper/1519:06:547
6333202238219,12sleep160-21swapper/1619:07:558
6332202236217,12sleep110-21swapper/1119:06:313
6334182234216,11sleep30-21swapper/319:09:2313
6331742233214,12sleep130-21swapper/1319:05:525
6334122232212,13sleep180-21swapper/1819:09:1710
6332362232213,12sleep60-21swapper/619:06:4516
6332082229210,12sleep10-21swapper/119:06:201
6331702221202,12sleep100-21swapper/1019:05:482
6333502213195,11sleep40-21swapper/419:08:2414
633898993231,1cyclictest194550irq/149-eno122:00:0111
633832993232,0cyclictest667494-21kworker/0:1+pm21:31:560
63389499316,24cyclictest0-21swapper/1821:27:5610
633832993131,0cyclictest667494-21kworker/0:1+pm21:12:000
633832993131,0cyclictest629127-21kworker/0:0+pm19:23:580
633832993030,0cyclictest667494-21kworker/0:1+pm20:25:490
633832992929,0cyclictest667494-21kworker/0:1+pm21:24:080
633832992929,0cyclictest629127-21kworker/0:0+pm19:32:280
633832992928,1cyclictest667494-21kworker/0:1+pm19:47:450
63386499280,27cyclictest0-21swapper/1023:06:502
63386499280,27cyclictest0-21swapper/1020:50:352
63386499280,27cyclictest0-21swapper/1019:34:172
63386499280,0cyclictest0-21swapper/1000:02:182
633832992828,0cyclictest667494-21kworker/0:1+pm19:50:340
633832992727,0cyclictest833402-21kworker/0:0+pm23:36:010
633832992727,0cyclictest833402-21kworker/0:0+pm23:36:010
633832992727,0cyclictest833402-21kworker/0:0+pm00:00:130
633832992727,0cyclictest667494-21kworker/0:1+pm22:13:010
633832992727,0cyclictest667494-21kworker/0:1+pm21:59:000
633832992727,0cyclictest667494-21kworker/0:1+pm21:51:100
633832992727,0cyclictest667494-21kworker/0:1+pm21:40:450
633832992727,0cyclictest667494-21kworker/0:1+pm21:37:250
633832992727,0cyclictest667494-21kworker/0:1+pm21:04:550
633832992727,0cyclictest667494-21kworker/0:1+pm20:52:130
633832992727,0cyclictest667494-21kworker/0:1+pm20:31:320
633832992727,0cyclictest667494-21kworker/0:1+pm20:07:440
633832992727,0cyclictest667494-21kworker/0:1+pm19:59:330
63389499260,22cyclictest701037-21systemd20:30:0110
633859992626,0cyclictest0-21swapper/921:21:2819
633851992617,8cyclictest0-21swapper/620:00:2116
633832992626,0cyclictest833402-21kworker/0:0+pm23:56:140
633832992626,0cyclictest833402-21kworker/0:0+pm23:23:080
633832992626,0cyclictest833402-21kworker/0:0+pm00:32:350
633832992626,0cyclictest833402-21kworker/0:0+pm00:29:540
633832992626,0cyclictest833402-21kworker/0:0+pm00:13:080
633832992626,0cyclictest800266-21kworker/0:2+pm22:47:430
633832992626,0cyclictest667494-21kworker/0:1+pm22:29:040
633832992626,0cyclictest667494-21kworker/0:1+pm22:03:150
633832992626,0cyclictest667494-21kworker/0:1+pm20:47:010
633832992626,0cyclictest629127-21kworker/0:0+pm19:44:470
633832992626,0cyclictest629127-21kworker/0:0+pm19:37:020
633832992626,0cyclictest629127-21kworker/0:0+pm19:17:160
633894992524,1cyclictest194550irq/149-eno119:40:1810
633881992520,5cyclictest0-21swapper/1421:10:006
633864992525,0cyclictest0-21swapper/1021:57:362
633864992525,0cyclictest0-21swapper/1019:41:422
633864992524,1cyclictest0-21swapper/1023:59:242
633864992524,0cyclictest0-21swapper/1019:55:472
633832992525,0cyclictest833402-21kworker/0:0+pm23:47:550
633832992525,0cyclictest833402-21kworker/0:0+pm23:15:530
633832992525,0cyclictest833402-21kworker/0:0+pm00:24:070
633832992525,0cyclictest800266-21kworker/0:2+pm23:09:040
633832992525,0cyclictest800266-21kworker/0:2+pm22:51:080
633832992525,0cyclictest800266-21kworker/0:2+pm22:36:590
633832992525,0cyclictest667494-21kworker/0:1+pm21:45:150
633832992525,0cyclictest667494-21kworker/0:1+pm21:26:050
633832992525,0cyclictest667494-21kworker/0:1+pm21:08:420
633832992525,0cyclictest667494-21kworker/0:1+pm20:56:230
633832992525,0cyclictest667494-21kworker/0:1+pm20:17:410
633832992525,0cyclictest667494-21kworker/0:1+pm20:17:400
633832992525,0cyclictest629127-21kworker/0:0+pm19:29:010
633832992524,0cyclictest833402-21kworker/0:0+pm23:30:320
633832992524,0cyclictest833402-21kworker/0:0+pm23:30:320
633832992523,1cyclictest629127-21kworker/0:0+pm19:13:120
63389499240,23cyclictest725826-21latency_hist21:00:0110
63389499240,0cyclictest0-21swapper/1822:30:0010
633881992422,2cyclictest0-21swapper/1421:35:216
633881992421,2cyclictest0-21swapper/1421:20:196
63388199241,23cyclictest0-21swapper/1419:45:016
633878992420,3cyclictest2178-21snmpd00:17:215
633864992423,1cyclictest0-21swapper/1021:10:012
633864992421,2cyclictest0-21swapper/1021:35:202
633859992424,0cyclictest0-21swapper/921:46:2819
633851992417,7cyclictest0-21swapper/620:30:0016
633842992422,1cyclictest0-21swapper/300:17:5713
633832992424,0cyclictest833402-21kworker/0:0+pm23:28:160
633832992424,0cyclictest833402-21kworker/0:0+pm23:28:160
633832992424,0cyclictest833402-21kworker/0:0+pm00:35:550
633832992424,0cyclictest800266-21kworker/0:2+pm22:42:500
633832992424,0cyclictest667494-21kworker/0:1+pm22:24:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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