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2026-06-06 - 02:51

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 06, 2026 00:46:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14482472380359,13sleep120-21swapper/1219:07:024
14482462364323,14sleep110-21swapper/1119:07:013
14483882358338,13sleep60-21swapper/619:08:5012
14449882357316,14sleep100-21swapper/1019:05:082
14482432355335,13sleep90-21swapper/919:06:5915
14481682355334,14sleep50-21swapper/519:06:0711
14482932354334,13sleep130-21swapper/1319:07:375
14481222354335,13sleep40-21swapper/419:05:3410
14484462353330,15sleep70-21swapper/719:09:3913
14481632351333,12sleep20-21swapper/219:06:048
14482332350331,12sleep10-21swapper/119:06:511
14446222350329,13sleep30-21swapper/319:05:019
14482882349329,13sleep80-21swapper/819:07:3014
14482752349328,14sleep150-21swapper/1519:07:217
14484362347324,15sleep140-21swapper/1419:09:306
14484182347328,13sleep00-21swapper/019:09:160
1448899994545,0cyclictest0-21swapper/221:20:178
1448899993938,1cyclictest1540488-21kworker/u32:2+events_unbound21:11:018
1448899993938,1cyclictest1540488-21kworker/u32:2+events_unbound21:11:008
1448899993737,0cyclictest1813916-21ssh00:32:018
1448899993734,3cyclictest1494639-21processes20:00:228
1448920993636,0cyclictest0-21swapper/923:02:4015
1448899993532,3cyclictest0-21swapper/220:20:178
1448931993431,1cyclictest1411ktimers/1300:00:145
1448920993434,0cyclictest0-21swapper/923:09:3115
1448903993434,0cyclictest0-21swapper/300:18:179
1448903993434,0cyclictest0-21swapper/300:18:179
1448903993433,1cyclictest1540488-21kworker/u32:2+events_unbound21:35:169
1448899993433,1cyclictest1455657-21cstates19:15:128
1448899993433,1cyclictest0-21swapper/223:31:158
1448899993431,3cyclictest0-21swapper/223:59:558
144892699330,1cyclictest0-21swapper/1119:42:043
1448903993333,0cyclictest0-21swapper/322:02:179
1448899993333,0cyclictest0-21swapper/219:49:398
1448899993333,0cyclictest0-21swapper/200:11:078
1448899993333,0cyclictest0-21swapper/200:11:078
1448899993332,1cyclictest1677787-21kworker/u32:0+events_unbound22:47:428
1448899993332,1cyclictest1452482-21kworker/u32:6+events_unbound20:15:158
1448899993332,0cyclictest0-21swapper/223:11:478
1448899993331,2cyclictest1610916-21cat21:55:148
1448899993331,2cyclictest0-21swapper/223:51:008
1448899993331,2cyclictest0-21swapper/223:38:098
1448899993331,2cyclictest0-21swapper/222:35:208
144889999332,31cyclictest0-21swapper/222:00:278
144889999330,31cyclictest0-21swapper/219:50:208
144893599320,29cyclictest0-21swapper/1423:15:146
1448926993224,2cyclictest0-21swapper/1119:30:153
1448924993230,1cyclictest1729187-21kworker/10:2+events23:38:052
1448924993230,1cyclictest1536000-21kworker/10:2+events21:18:132
144889999329,23cyclictest0-21swapper/220:57:548
1448899993232,0cyclictest0-21swapper/223:18:268
1448899993232,0cyclictest0-21swapper/222:55:128
1448899993232,0cyclictest0-21swapper/200:35:218
1448899993232,0cyclictest0-21swapper/200:21:148
1448899993230,2cyclictest1794886-21sh00:17:338
1448899993230,2cyclictest1794886-21sh00:17:328
1448899993230,2cyclictest1590986-21ssh21:40:128
1448899993229,3cyclictest0-21swapper/223:20:178
1448899993228,3cyclictest1668735-21df22:40:128
144889999320,30cyclictest0-21swapper/223:40:108
144889999320,29cyclictest1562120-21ssh21:18:128
144889999320,29cyclictest0-21swapper/220:45:118
1448939993129,1cyclictest1453893-21cat19:15:017
144893999310,30cyclictest0-21swapper/1522:32:197
144893599317,13cyclictest0-21swapper/1422:12:576
144893599310,30cyclictest0-21swapper/1423:53:246
144893199310,30cyclictest0-21swapper/1323:23:015
1448929993130,1cyclictest1774-21snmpd21:22:524
144892699310,30cyclictest0-21swapper/1123:48:263
1448924993129,1cyclictest1763579-21kworker/10:1+events00:27:232
1448924993129,1cyclictest1729187-21kworker/10:2+events23:40:492
1448924993129,1cyclictest1633756-21kworker/10:2+events22:37:142
1448924993129,1cyclictest1633756-21kworker/10:2+events22:18:212
144892499310,30cyclictest0-21swapper/1023:48:002
144892499310,30cyclictest0-21swapper/1022:53:252
144892499310,30cyclictest0-21swapper/1022:24:032
144892499310,30cyclictest0-21swapper/1020:30:252
144891899310,30cyclictest0-21swapper/822:21:5414
1448908993131,0cyclictest0-21swapper/523:26:0911
1448908993131,0cyclictest0-21swapper/521:05:2111
1448908993131,0cyclictest0-21swapper/521:05:2011
1448908993129,1cyclictest70-21ksoftirqd/522:15:4611
1448903993131,0cyclictest0-21swapper/322:15:479
1448903993131,0cyclictest0-21swapper/321:50:499
1448899993130,1cyclictest0-21swapper/223:27:468
1448899993130,1cyclictest0-21swapper/222:05:598
1448899993130,0cyclictest0-21swapper/222:24:328
1448899993129,2cyclictest0-21swapper/200:01:288
1448899993127,3cyclictest1578768-21ssh21:30:178
1448899993122,4cyclictest1649255-21kworker/2:1-events22:26:038
144889999310,31cyclictest0-21swapper/200:06:338
144889999310,31cyclictest0-21swapper/200:06:338
144889999310,29cyclictest1742460-21kworker/2:1+events23:47:178
144889999310,0cyclictest0-21swapper/200:25:178
1448897993130,1cyclictest0-21swapper/120:22:511
144889799310,30cyclictest0-21swapper/122:01:151
1448893993130,1cyclictest1774-21snmpd21:29:280
1448939993029,1cyclictest0-21swapper/1522:43:157
144893999300,30cyclictest0-21swapper/1521:04:117
144893999300,30cyclictest0-21swapper/1521:04:107
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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