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2025-09-16 - 09:05

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 Tue Sep 16, 2025 00:46:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24432792434389,13sleep100-21swapper/1019:09:362
24430322333311,14sleep120-21swapper/1219:06:414
24431072311293,11sleep130-21swapper/1319:07:305
24432652272252,13sleep20-21swapper/219:09:288
24422352264255,6sleep30-21swapper/319:05:279
24432952260241,12sleep80-21swapper/819:09:5014
24432002260240,13sleep00-21swapper/019:08:380
24429722260249,7sleep60-21swapper/619:06:0312
24432852258241,10sleep150-21swapper/1519:09:417
24432812256239,11sleep110-21swapper/1119:09:373
24429892251235,10sleep10-21swapper/119:06:141
24431402250228,15sleep70-21swapper/719:07:5613
24432842245228,10sleep140-21swapper/1419:09:406
24430042242221,14sleep90-21swapper/919:06:2215
24432742144124,13sleep50-21swapper/519:09:3111
243980228784,1sleep40-21swapper/419:05:1210
2443773994640,5cyclictest2490997-21latency_hist20:04:5912
2443773994241,1cyclictest2624703-21kworker/u32:1+events_unbound23:15:1912
2443771994140,1cyclictest2276337-21kworker/5:1+events19:18:2711
2443805993938,1cyclictest2443095-21kworker/u32:2+flush-259:019:25:207
2443805993936,0cyclictest2586626-21kworker/15:1+events23:47:337
2443805993936,0cyclictest2586626-21kworker/15:1+events23:47:337
2443771993939,0cyclictest2548579-21kworker/5:2+events23:51:2211
2443771993939,0cyclictest2548579-21kworker/5:2+events23:51:2211
2443805993737,0cyclictest2455610-21kworker/15:0+events21:16:427
2443805993737,0cyclictest2455610-21kworker/15:0+events20:26:207
2443805993736,1cyclictest2586626-21kworker/15:1+events23:11:167
2443805993736,1cyclictest2455610-21kworker/15:0+events20:24:207
2443805993736,1cyclictest2455610-21kworker/15:0+events19:56:527
2443782993713,24cyclictest97-21ksoftirqd/819:32:1714
2443805993636,0cyclictest2586626-21kworker/15:1+events22:49:227
2443805993636,0cyclictest2455610-21kworker/15:0+events21:22:347
2443782993625,11cyclictest0-21swapper/823:55:5314
2443777993632,2cyclictest2702047-21kworker/u32:1+flush-259:000:38:3013
2443805993535,0cyclictest2455610-21kworker/15:0+events21:07:547
2443805993535,0cyclictest2455610-21kworker/15:0+events20:13:147
2443805993535,0cyclictest2455610-21kworker/15:0+events19:41:327
2443805993535,0cyclictest2331666-21kworker/15:2+events19:18:537
2443805993534,1cyclictest2586626-21kworker/15:1+events23:41:477
2443805993534,1cyclictest2586626-21kworker/15:1+events23:41:477
2443805993534,1cyclictest2586626-21kworker/15:1+events22:44:377
2443782993511,13cyclictest97-21ksoftirqd/819:43:1614
2443771993535,0cyclictest0-21swapper/523:35:0211
2443805993434,0cyclictest2586626-21kworker/15:1+events23:17:067
2443805993434,0cyclictest2586626-21kworker/15:1+events22:30:107
2443805993434,0cyclictest2455610-21kworker/15:0+events21:48:207
2443805993434,0cyclictest2455610-21kworker/15:0+events20:01:387
2443805993433,1cyclictest2586626-21kworker/15:1+events23:56:267
2443805993433,1cyclictest2586626-21kworker/15:1+events22:54:117
2443805993433,1cyclictest2455610-21kworker/15:0+events21:39:487
2443777993429,3cyclictest2494139-21kworker/u32:2+events_unbound20:28:2413
2443773993434,0cyclictest0-21swapper/621:05:0012
2443773993434,0cyclictest0-21swapper/620:35:1612
2443773993434,0cyclictest0-21swapper/620:35:1612
2443773993433,1cyclictest2565547-21kworker/u32:3+events_unbound21:50:2012
2443773993432,2cyclictest2638510-21kworker/u32:4+events_unbound23:12:2112
2443761993433,1cyclictest2525507-21kworker/u32:0+flush-259:021:25:208
2443805993333,0cyclictest2586626-21kworker/15:1+events23:36:347
2443805993333,0cyclictest2586626-21kworker/15:1+events23:22:427
2443805993333,0cyclictest2586626-21kworker/15:1+events22:22:287
2443805993333,0cyclictest2586626-21kworker/15:1+events00:37:407
2443805993333,0cyclictest2586626-21kworker/15:1+events00:14:127
2443805993333,0cyclictest2586626-21kworker/15:1+events00:08:347
2443805993333,0cyclictest2455610-21kworker/15:0+events20:44:107
2443805993333,0cyclictest2455610-21kworker/15:0+events20:44:107
2443805993333,0cyclictest2455610-21kworker/15:0+events19:47:407
2443805993332,1cyclictest2474782-21kworker/u32:4+flush-259:020:05:217
244380299330,30cyclictest0-21swapper/1423:15:246
2443771993333,0cyclictest0-21swapper/522:52:4411
2443805993232,0cyclictest2586626-21kworker/15:1+events22:26:437
2443805993232,0cyclictest2586626-21kworker/15:1+events22:01:147
2443805993232,0cyclictest2586626-21kworker/15:1+events21:59:227
2443805993232,0cyclictest2586626-21kworker/15:1+events00:02:127
2443805993232,0cyclictest2455610-21kworker/15:0+events20:18:127
244380299320,32cyclictest0-21swapper/1420:11:386
244378299328,11cyclictest0-21swapper/821:33:0614
244377799320,30cyclictest894049-21systemd-journal23:26:5413
244377799320,30cyclictest894049-21systemd-journal19:51:2613
244377799320,29cyclictest0-21swapper/723:22:3613
244377799320,29cyclictest0-21swapper/722:21:2613
244377799320,29cyclictest0-21swapper/720:43:1813
244377799320,29cyclictest0-21swapper/720:43:1813
244377799320,29cyclictest0-21swapper/719:48:5113
244377799320,29cyclictest0-21swapper/719:10:0713
2443773993232,0cyclictest0-21swapper/620:09:3412
2443773993232,0cyclictest0-21swapper/600:29:2612
2443773993232,0cyclictest0-21swapper/600:15:5812
2443773993228,4cyclictest0-21swapper/621:10:1612
2443773993227,5cyclictest0-21swapper/621:47:5812
244377199320,29cyclictest0-21swapper/523:10:1711
2443805993131,0cyclictest2586626-21kworker/15:1+events23:31:407
2443805993131,0cyclictest2586626-21kworker/15:1+events00:22:107
2443805993130,1cyclictest2586626-21kworker/15:1+events23:26:167
2443805993130,1cyclictest2586626-21kworker/15:1+events00:32:287
2443805993130,1cyclictest2494139-21kworker/u32:2+events_unbound21:40:157
2443798993130,1cyclictest1813-21snmpd21:01:575
2443793993130,1cyclictest0-21swapper/1120:22:473
244379399310,30cyclictest0-21swapper/1123:12:543
244379399310,30cyclictest0-21swapper/1122:34:363
244379399310,0cyclictest0-21swapper/1119:40:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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