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2026-03-20 - 05:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #3

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 rack0slot3s.osadl.org (updated Fri Mar 20, 2026 00:44:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11394772274211,17sleep00-21swapper/019:05:490
11395542273265,5sleep10-21swapper/119:06:471
11397442261219,32sleep50-21swapper/519:09:155
11397692257213,34sleep30-21swapper/319:09:383
11395572256206,17sleep40-21swapper/419:06:504
11394992256247,6sleep70-21swapper/719:06:047
11396082249209,31sleep20-21swapper/219:07:282
11396662244206,27sleep60-21swapper/619:08:116
1140099993715,1cyclictest0-21swapper/622:07:346
1140093993531,4cyclictest0-21swapper/519:49:325
1140093992927,1cyclictest0-21swapper/522:00:085
1140103992718,5cyclictest0-21swapper/721:49:027
1140078992718,7cyclictest0-21swapper/222:06:242
1140073992722,4cyclictest1385-21snmpd19:50:281
114010399260,22cyclictest0-21swapper/721:14:227
114010399260,22cyclictest0-21swapper/719:23:047
114009999260,22cyclictest0-21swapper/620:58:116
114008599260,25cyclictest0-21swapper/422:12:034
114007899260,24cyclictest0-21swapper/223:24:352
114007399260,22cyclictest0-21swapper/100:02:151
114006999260,24cyclictest0-21swapper/022:57:420
114006999260,24cyclictest0-21swapper/022:57:420
1140103992522,3cyclictest1295775-21cat23:50:157
1140103992518,5cyclictest0-21swapper/722:51:427
1140103992518,3cyclictest0-21swapper/721:32:037
1140099992521,3cyclictest1385-21snmpd23:30:296
1140099992521,3cyclictest1385-21snmpd20:13:376
1140099992518,5cyclictest0-21swapper/623:54:266
1140093992521,3cyclictest1385-21snmpd00:32:135
1140085992518,3cyclictest0-21swapper/419:19:154
114008599251,22cyclictest0-21swapper/419:49:004
114008599250,23cyclictest0-21swapper/422:31:334
114008599250,23cyclictest0-21swapper/420:32:474
114008599250,23cyclictest0-21swapper/420:32:464
114008599250,1cyclictest0-21swapper/400:30:484
114008599250,1cyclictest0-21swapper/400:24:104
1140082992522,3cyclictest1241-21ntpd22:02:423
1140082992521,3cyclictest1385-21snmpd19:56:283
1140078992521,3cyclictest1385-21snmpd22:42:122
1140078992518,5cyclictest0-21swapper/221:15:002
1140078992518,5cyclictest0-21swapper/219:20:142
114007399250,25cyclictest0-21swapper/119:25:301
114007399250,22cyclictest0-21swapper/119:46:371
1140069992518,5cyclictest0-21swapper/022:30:280
1140069992518,5cyclictest0-21swapper/021:27:000
1140103992422,2cyclictest1385-21snmpd22:40:167
1140103992421,3cyclictest1276531-21awk23:15:157
1140103992421,2cyclictest2735-21gnome-shell22:17:597
1140103992421,2cyclictest1385-21snmpd21:16:347
1140103992420,3cyclictest1199698-21cat20:55:157
114010399240,22cyclictest0-21swapper/720:33:267
114010399240,22cyclictest0-21swapper/720:33:267
1140099992421,3cyclictest1385-21snmpd23:58:336
1140099992421,3cyclictest1385-21snmpd00:19:496
1140099992417,5cyclictest0-21swapper/623:43:506
1140099992417,5cyclictest0-21swapper/619:59:386
1140099992417,5cyclictest0-21swapper/619:51:136
114009999240,22cyclictest0-21swapper/622:24:366
1140093992421,2cyclictest523-21systemd-journal21:56:195
1140093992420,3cyclictest1385-21snmpd21:33:485
114009399240,3cyclictest523-21systemd-journal19:53:595
114009399240,2cyclictest523-21systemd-journal20:25:595
114009399240,2cyclictest523-21systemd-journal20:25:595
1140085992422,1cyclictest1385-21snmpd19:40:334
1140085992420,3cyclictest1188733-21cat20:35:144
114008599240,2cyclictest0-21swapper/419:51:034
114008599240,22cyclictest0-21swapper/422:09:544
114008599240,22cyclictest0-21swapper/421:01:184
1140082992422,1cyclictest1385-21snmpd21:40:443
1140082992422,1cyclictest1385-21snmpd00:15:333
1140082992420,3cyclictest1385-21snmpd22:45:463
1140082992420,3cyclictest1385-21snmpd20:16:283
1140082992419,3cyclictest0-21swapper/320:37:413
1140082992417,5cyclictest0-21swapper/322:17:003
114008299240,22cyclictest0-21swapper/319:27:423
1140078992420,3cyclictest1385-21snmpd23:06:272
1140078992420,3cyclictest1385-21snmpd21:07:522
1140078992417,5cyclictest0-21swapper/219:10:032
114007899240,22cyclictest0-21swapper/200:05:322
1140073992421,3cyclictest1385-21snmpd22:48:541
1140073992420,3cyclictest1385-21snmpd21:58:011
114007399240,22cyclictest0-21swapper/120:41:261
1140069992420,3cyclictest1385-21snmpd22:44:460
1140069992417,5cyclictest0-21swapper/023:15:500
1140069992417,3cyclictest0-21swapper/023:00:150
1140069992417,3cyclictest0-21swapper/023:00:150
114006999240,23cyclictest0-21swapper/021:30:090
114006999240,1cyclictest0-21swapper/019:57:420
1140103992322,1cyclictest1385-21snmpd00:19:397
1140103992321,1cyclictest1385-21snmpd19:27:157
1140103992319,3cyclictest1385-21snmpd23:29:477
114010399230,23cyclictest0-21swapper/723:30:177
114010399230,22cyclictest0-21swapper/719:13:217
114010399230,1cyclictest0-21swapper/700:13:207
1140099992322,1cyclictest0-21swapper/619:44:216
1140099992321,2cyclictest0-21swapper/619:12:216
1140099992319,3cyclictest1213430-21cat21:20:166
1140099992316,5cyclictest0-21swapper/600:35:156
114009999230,22cyclictest0-21swapper/620:18:116
114009999230,1cyclictest0-21swapper/623:12:386
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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