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2026-07-17 - 06:06
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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 rack3slot6.osadl.org (updated Fri Jul 17, 2026 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29097991076,82cyclictest0-21swapper/000:15:120
29097991076,82cyclictest0-21swapper/000:15:120
28626210317,34sleep10-21swapper/119:07:291
29097991027,78cyclictest0-21swapper/021:15:140
29102999879,9cyclictest26-21ksoftirqd/121:30:121
29102999774,10cyclictest26-21ksoftirqd/100:20:131
2909799967,16cyclictest0-21swapper/022:30:110
2848729622,27sleep00-21swapper/019:05:590
2909799948,73cyclictest0-21swapper/020:55:120
2909799928,16cyclictest0-21swapper/021:35:120
29102998859,18cyclictest26-21ksoftirqd/121:45:131
29102998560,17cyclictest26-21ksoftirqd/123:30:121
29102998554,21cyclictest26-21ksoftirqd/119:40:131
110402830,8chrt0-21swapper/021:20:160
110402830,8chrt0-21swapper/021:20:160
29102998252,17cyclictest26-21ksoftirqd/120:20:151
29102998226,31cyclictest2691-21munin-run00:00:011
2909799826,12cyclictest0-21swapper/000:10:240
29102997937,20cyclictest27584-21/usr/sbin/munin20:35:391
29102997925,19cyclictest3230-21apt-get00:00:181
29102997827,21cyclictest30453-21apt-get22:15:011
29102997826,26cyclictest455-21rs:main1
29102997825,21cyclictest32719-21turbostat20:50:001
29102997825,21cyclictest32719-21turbostat20:50:001
29102997821,34cyclictest457-21dbus-daemon23:05:001
29102997726,26cyclictest4505-21apt-get19:30:111
29102997726,25cyclictest1-21systemd22:00:201
29102997726,25cyclictest1-21systemd22:00:201
29102997725,20cyclictest17887-21idleruntime-cro21:40:001
29102997647,16cyclictest26-21ksoftirqd/123:45:121
29102997626,25cyclictest1-21systemd20:00:201
29102997625,26cyclictest562-21runrttasks22:55:201
29102997625,21cyclictest23980-21ntpq21:55:281
29102997624,22cyclictest6576-21apt-get00:10:131
29102997624,20cyclictest9047-21sh21:15:011
29102997623,24cyclictest1825-21cron22:25:001
29102997623,24cyclictest1825-21cron22:25:001
29102997617,36cyclictest11454-21cat19:50:011
29102997549,14cyclictest29405-21apt-get20:40:121
29102997526,21cyclictest28924-21apt-get19:10:151
29102997525,26cyclictest9765-21runrttasks22:45:331
29102997524,26cyclictest22349-21sed23:20:351
29102997524,20cyclictest243-21systemd-journal23:40:001
29102997523,26cyclictest7417-21tail22:40:171
29102997523,26cyclictest7417-21tail22:40:171
29102997523,26cyclictest3413-21strings19:25:261
29102997523,22cyclictest243-21systemd-journal20:10:001
29102997523,20cyclictest28404-21cron22:10:001
29102997523,20cyclictest18394-21apt-get20:10:131
29102997522,24cyclictest503-21snmpd21:00:201
29102997520,23cyclictest0-21swapper/119:20:101
29102997443,22cyclictest26-21ksoftirqd/121:40:121
29102997425,24cyclictest27008-21runrttasks20:30:411
29102997425,21cyclictest4848-21grep22:30:371
29102997424,21cyclictest2921-21ntp_states20:55:291
29102997424,20cyclictest10799-21munin-run21:20:001
29102997423,26cyclictest32482-21cron22:20:001
29102997423,26cyclictest24962-21runrttasks20:25:351
29102997423,26cyclictest16885-21sed00:35:381
29102997423,26cyclictest13825-21grep21:25:361
29102997423,25cyclictest8999-21taskset00:15:181
29102997423,25cyclictest8999-21taskset00:15:181
29102997422,27cyclictest14407-21seq19:55:361
29102997422,26cyclictest3557-21cron22:30:001
29102997422,26cyclictest22208-21tr20:20:011
29102997422,25cyclictest562-21runrttasks23:50:251
29102997422,22cyclictest15596-21turbostat.cron00:35:001
29102997422,19cyclictest7315-21apt21:10:001
29102997339,21cyclictest19531-21apt-get23:15:151
29102997324,21cyclictest5616-21needreboot00:05:321
29102997322,27cyclictest562-21runrttasks22:50:261
29102997322,27cyclictest12141-21tail19:50:271
29102997322,27cyclictest12141-21tail19:50:271
29102997322,26cyclictest5740-21cut22:35:181
29102997322,26cyclictest17896-21cut23:10:171
29102997322,26cyclictest12972-21awk00:25:271
29102997322,24cyclictest32743-21grep19:15:371
29102997321,27cyclictest29225-21wc23:40:361
29102997321,26cyclictest562-21runrttasks23:05:291
29102997321,26cyclictest2026-21idleruntime-cro20:55:001
29102997320,20cyclictest7880-21ls19:40:011
2909799737,14cyclictest0-21swapper/020:40:110
29102997222,25cyclictest12546-21cron21:25:001
29102997222,25cyclictest12546-21cron21:25:001
29102997219,28cyclictest22267-21ntpq21:50:301
29097997249,9cyclictest7286-21/usr/sbin/munin22:40:360
29097997249,9cyclictest7286-21/usr/sbin/munin22:40:360
29097997246,9cyclictest14-21ksoftirqd/019:34:550
2909799717,13cyclictest0-21swapper/021:30:140
2909799716,56cyclictest14025-21apt-get00:30:120
29097996829,13cyclictest14-21ksoftirqd/023:05:170
2909799665,46cyclictest0-21swapper/020:50:130
2909799657,14cyclictest0-21swapper/000:20:120
2909799656,47cyclictest0-21swapper/023:35:130
2909799656,11cyclictest0-21swapper/000:05:170
2909799654,14cyclictest14-21ksoftirqd/023:05:000
29097996529,13cyclictest14-21ksoftirqd/023:20:150
29097996515,34cyclictest26018-21taskset23:31:370
29097996430,18cyclictest14-21ksoftirqd/022:17:420
29097996429,13cyclictest14-21ksoftirqd/019:15:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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