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2026-04-26 - 10:49

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 Sun Apr 26, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1384702287281,4sleep70-21swapper/719:05:4217
1384702287281,4sleep70-21swapper/719:05:4217
1388022255247,5sleep100-21swapper/1019:09:462
1388022255247,5sleep100-21swapper/1019:09:462
1387702252245,4sleep120-21swapper/1219:09:294
1387702252245,4sleep120-21swapper/1219:09:284
1384642251244,4sleep30-21swapper/319:05:3813
1384642251244,4sleep30-21swapper/319:05:3813
1386232248228,12sleep50-21swapper/519:07:2115
1386232248228,12sleep50-21swapper/519:07:2115
1384732246239,4sleep90-21swapper/919:05:4419
1384732246239,4sleep90-21swapper/919:05:4419
1384962238218,12sleep10-21swapper/119:05:561
1384962238218,12sleep10-21swapper/119:05:561
1385472237195,12sleep160-21swapper/1619:06:328
1385472237195,12sleep160-21swapper/1619:06:328
1384682235198,30sleep60-21swapper/619:05:4116
1384682235198,30sleep60-21swapper/619:05:4116
1385822234214,12sleep190-21swapper/1919:06:5611
1385822234214,12sleep190-21swapper/1919:06:5511
1384662234214,12sleep40-21swapper/419:05:3914
1384662234214,12sleep40-21swapper/419:05:3914
1384772233225,5sleep110-21swapper/1119:05:463
1384772233225,5sleep110-21swapper/1119:05:463
1362012232212,12sleep180-21swapper/1819:05:1310
1362012232212,12sleep180-21swapper/1819:05:1310
1384882231223,5sleep170-21swapper/1719:05:529
1384882231223,5sleep170-21swapper/1719:05:529
1388222223204,11sleep20-21swapper/219:09:5912
1388222223204,11sleep20-21swapper/219:09:5912
1385552223204,11sleep00-21swapper/019:06:360
1385552223204,11sleep00-21swapper/019:06:360
1385972222203,12sleep80-21swapper/819:07:0418
1385972222203,12sleep80-21swapper/819:07:0418
1385762219199,13sleep150-21swapper/1519:06:517
1385762219199,13sleep150-21swapper/1519:06:517
1387022218200,11sleep140-21swapper/1419:08:306
1387022218200,11sleep140-21swapper/1419:08:306
1387712216198,11sleep130-21swapper/1319:09:295
1387712216198,11sleep130-21swapper/1319:09:295
13922999756,29cyclictest0-21swapper/1719:46:269
3910042510,0sleep50-21swapper/500:10:2215
2095612350,0sleep10-21swapper/120:30:221
192599330,0ntpd0-21swapper/621:16:2316
192599330,0ntpd0-21swapper/620:16:2316
13923499326,26cyclictest0-21swapper/1923:01:2611
139197993131,0cyclictest0-21swapper/820:39:5918
139184993131,0cyclictest0-21swapper/400:39:5814
139231992929,0cyclictest0-21swapper/1819:58:5910
13922999290,29cyclictest0-21swapper/1719:44:599
13918999290,0cyclictest0-21swapper/619:58:5916
13917799290,29cyclictest0-21swapper/219:44:5912
13917299290,29cyclictest0-21swapper/019:33:590
139234992828,0cyclictest0-21swapper/1920:24:5911
139229992828,0cyclictest0-21swapper/1719:59:599
139215992828,0cyclictest0-21swapper/1420:10:596
139182992817,10cyclictest3820-21gnome-shell20:12:4113
139177992828,0cyclictest0-21swapper/219:59:5912
139203992727,0cyclictest0-21swapper/1020:24:592
139197992727,0cyclictest0-21swapper/820:12:5918
139187992727,0cyclictest0-21swapper/519:50:5915
139174992727,0cyclictest0-21swapper/119:48:591
139172992727,0cyclictest0-21swapper/022:00:000
139224992626,0cyclictest0-21swapper/1619:42:598
139211992626,0cyclictest0-21swapper/1319:46:005
139211992625,1cyclictest0-21swapper/1300:15:165
13920899260,0cyclictest0-21swapper/1220:12:594
139187992626,0cyclictest0-21swapper/519:48:5915
139182992616,10cyclictest0-21swapper/320:25:1813
139174992626,0cyclictest0-21swapper/120:05:591
13920899250,25cyclictest0-21swapper/1220:09:594
139199992525,0cyclictest0-21swapper/920:09:5919
139197992524,1cyclictest412678-21updatedb00:39:5818
139174992525,0cyclictest0-21swapper/100:02:591
139172992525,0cyclictest0-21swapper/000:39:590
139229992424,0cyclictest0-21swapper/1720:13:599
13922999240,23cyclictest227696-21sed20:54:599
139211992424,0cyclictest0-21swapper/1319:43:595
13921199241,23cyclictest0-21swapper/1319:10:345
139208992424,0cyclictest0-21swapper/1220:22:594
139199992424,0cyclictest0-21swapper/900:39:4119
139199992423,1cyclictest1051rcuc/919:29:4019
139199992422,2cyclictest1051rcuc/919:55:1819
13919799240,0cyclictest0-21swapper/819:41:5918
139187992424,0cyclictest0-21swapper/520:59:5915
139184992424,0cyclictest0-21swapper/419:39:5914
139177992424,0cyclictest0-21swapper/220:14:0012
139174992416,6cyclictest0-21swapper/119:10:371
139172992424,0cyclictest0-21swapper/020:05:590
139234992323,0cyclictest0-21swapper/1922:19:5911
139234992323,0cyclictest0-21swapper/1922:19:5911
13923199230,0cyclictest0-21swapper/1819:45:0010
13922499230,22cyclictest97175-21kworker/16:0+i915-unordered19:30:598
139220992323,0cyclictest0-21swapper/1519:24:597
139211992312,11cyclictest0-21swapper/1300:09:585
139208992323,0cyclictest0-21swapper/1219:34:594
139199992321,1cyclictest0-21swapper/919:45:5919
13919999230,0cyclictest0-21swapper/919:39:5919
139189992321,2cyclictest3820-21gnome-shell20:41:5916
139187992323,0cyclictest0-21swapper/520:09:5915
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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