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2026-06-27 - 16:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 rack0slot4s.osadl.org (updated Sat Jun 27, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36665672365345,13sleep30-21swapper/319:08:489
36664202361323,13sleep140-21swapper/1419:06:496
36664072361343,12sleep10-21swapper/119:06:371
36666422358325,26sleep00-21swapper/019:09:500
36664442358338,13sleep150-21swapper/1519:07:077
36663992356336,13sleep100-21swapper/1019:06:302
36666592354335,13sleep90-21swapper/919:09:5915
36666272353333,13sleep20-21swapper/219:09:358
36666202352333,12sleep130-21swapper/1319:09:305
36664142350329,14sleep80-21swapper/819:06:4414
36631932348329,13sleep50-21swapper/519:05:0511
36664402347326,14sleep110-21swapper/1119:07:033
36664522346326,13sleep60-21swapper/619:07:1512
36666192345325,13sleep120-21swapper/1219:09:294
36663952344323,14sleep70-21swapper/719:06:2613
36664902341319,14sleep40-21swapper/419:07:4510
40088132890,0sleep30-21swapper/300:15:229
366708099544,25cyclictest0-21swapper/1423:59:586
3667036994139,2cyclictest3963290-21kworker/u32:0+flush-259:000:35:160
38140862380,0sleep140-21swapper/1421:45:126
3667080993827,0cyclictest0-21swapper/1421:04:146
366708099327,0cyclictest0-21swapper/1422:54:046
366707499320,29cyclictest0-21swapper/1220:35:154
3667059993230,1cyclictest1774-21snmpd21:29:2413
366705599320,29cyclictest0-21swapper/623:00:1512
366704299320,32cyclictest0-21swapper/223:30:138
3667084993130,1cyclictest1774-21snmpd22:47:447
3667084993130,1cyclictest0-21swapper/1521:34:337
366708099317,13cyclictest0-21swapper/1423:16:036
366708099317,13cyclictest0-21swapper/1419:25:236
366708099317,13cyclictest0-21swapper/1400:10:576
366708099317,12cyclictest0-21swapper/1422:43:056
366708099316,14cyclictest0-21swapper/1423:48:596
366708099310,30cyclictest0-21swapper/1422:47:086
366708099310,30cyclictest0-21swapper/1400:38:076
366707499310,30cyclictest0-21swapper/1220:05:144
366707199310,30cyclictest0-21swapper/1122:37:013
3667069993130,1cyclictest3990895-21kworker/10:2+events00:13:382
3667069993130,1cyclictest1774-21snmpd23:01:092
3667069993129,1cyclictest3966300-21kworker/10:2+events23:46:222
3667069993129,1cyclictest3517652-21kworker/10:1+events21:37:232
3667069993129,1cyclictest1774-21snmpd22:04:522
3667069993129,1cyclictest1774-21snmpd22:04:522
366706999310,30cyclictest0-21swapper/1022:41:132
3667064993129,1cyclictest3987024-21kworker/u32:5+flush-259:000:10:1615
366706499310,30cyclictest0-21swapper/919:45:1315
366705599310,1cyclictest0-21swapper/621:20:1412
366705399310,30cyclictest0-21swapper/523:37:2411
366704899310,30cyclictest0-21swapper/421:46:2410
3667042993130,1cyclictest1774-21snmpd00:32:528
366704299310,30cyclictest0-21swapper/220:07:288
366703699310,30cyclictest0-21swapper/000:00:140
3667084993029,1cyclictest1774-21snmpd20:53:507
3667084993029,1cyclictest1774-21snmpd00:14:317
366708099306,13cyclictest0-21swapper/1422:32:066
366708099306,13cyclictest0-21swapper/1420:42:166
366708099306,13cyclictest0-21swapper/1419:47:216
366708099306,13cyclictest0-21swapper/1419:14:246
366708099306,13cyclictest0-21swapper/1400:32:556
3667080993029,1cyclictest1774-21snmpd21:53:486
3667080993029,1cyclictest1774-21snmpd21:53:486
3667080993027,3cyclictest0-21swapper/1400:05:046
366708099300,30cyclictest0-21swapper/1420:00:456
366708099300,29cyclictest0-21swapper/1400:03:456
3667077993029,1cyclictest0-21swapper/1322:20:315
366707799300,29cyclictest0-21swapper/1321:15:565
366707799300,1cyclictest0-21swapper/1322:18:435
3667074993029,1cyclictest1774-21snmpd21:49:274
3667074993029,1cyclictest1774-21snmpd21:11:234
366707499300,27cyclictest0-21swapper/1220:50:134
3667071993029,1cyclictest1774-21snmpd22:57:143
3667071993029,1cyclictest1774-21snmpd22:42:223
3667071993029,1cyclictest1774-21snmpd20:09:583
3667071993029,1cyclictest0-21swapper/1122:18:493
3667071993029,1cyclictest0-21swapper/1121:15:173
3667069993030,0cyclictest3990895-21kworker/10:2+events00:05:592
3667069993030,0cyclictest3517652-21kworker/10:1+events21:55:352
3667069993030,0cyclictest3517652-21kworker/10:1+events21:55:352
3667069993030,0cyclictest3517652-21kworker/10:1+events21:23:292
3667069993030,0cyclictest3517652-21kworker/10:1+events19:49:132
3667069993029,1cyclictest3990895-21kworker/10:2+events00:18:192
3667069993029,1cyclictest3517652-21kworker/10:1+events23:06:252
3667069993029,1cyclictest3517652-21kworker/10:1+events22:10:032
3667069993029,1cyclictest1774-21snmpd22:27:132
366706999300,30cyclictest0-21swapper/1019:10:562
366706999300,1cyclictest0-21swapper/1019:33:092
3667064993029,1cyclictest0-21swapper/900:33:5815
366706499300,30cyclictest0-21swapper/921:34:4515
3667061993029,1cyclictest1774-21snmpd23:18:1414
3667061993029,1cyclictest1774-21snmpd20:03:3714
3667061993029,1cyclictest1774-21snmpd00:28:5814
3667061993029,1cyclictest0-21swapper/800:04:4514
366706199300,1cyclictest3768156-21diskmemload23:09:3814
366706199300,1cyclictest0-21swapper/819:25:4414
3667055993029,1cyclictest1774-21snmpd00:23:4612
3667053993029,1cyclictest1774-21snmpd19:10:1111
366705399300,30cyclictest0-21swapper/500:06:3311
366705399300,1cyclictest0-21swapper/520:38:2811
366704899300,30cyclictest0-21swapper/421:11:0210
3667044993029,1cyclictest1774-21snmpd00:32:319
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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