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2026-09-05 - 11:34
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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
Characteristics of the 50 highest latencies:
System rackcslot4.osadl.org (updated Sat Sep 05, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25116932285223,48sleep10-21swapper/119:08:111
25114642270211,44sleep00-21swapper/019:05:430
25203232640,11sleep126-21ksoftirqd/119:25:241
251199499563,7cyclictest2662708-21apt-get23:35:131
251199499542,6cyclictest2702518-21apt-get00:35:121
136599520,4rtkit-daemon1364-21rtkit-daemon22:15:471
251199499512,6cyclictest2699064-21apt-get00:30:121
251199499512,6cyclictest2676549-21apt-get23:55:131
136599510,4rtkit-daemon1364-21rtkit-daemon21:26:311
251199499503,5cyclictest2574809-21apt-get21:30:131
136599500,4rtkit-daemon1364-21rtkit-daemon23:31:521
136599500,4rtkit-daemon1364-21rtkit-daemon21:01:301
25265182490,4sleep10-21swapper/119:40:231
251199499492,6cyclictest2666131-21apt-get23:40:121
136599490,3rtkit-daemon1364-21rtkit-daemon22:04:480
251199499482,6cyclictest2568244-21apt-get21:20:121
251199499482,3cyclictest2696420-21ntp_states00:25:221
251199499472,7cyclictest2648834-21apt-get23:15:111
251199499462,5cyclictest2655784-21apt-get23:25:141
251199499451,10cyclictest2610171-21apt-get22:20:121
136599450,3rtkit-daemon1364-21rtkit-daemon00:00:340
26167782420,2sleep12616779-21sh22:29:391
251199499417,6cyclictest26-21ksoftirqd/119:10:111
136599390,4rtkit-daemon1364-21rtkit-daemon22:52:470
136599390,3rtkit-daemon0-21swapper/122:10:061
251199499382,11cyclictest2624100-21apt-get22:40:121
136599380,6rtkit-daemon2680752-21ntp_states00:00:191
136599380,6rtkit-daemon2531073-21cron19:55:010
136599380,3rtkit-daemon0-21swapper/120:59:520
251199499376,29cyclictest0-21swapper/121:45:001
2511994993716,19cyclictest2561790-21grep21:10:211
251199499371,13cyclictest2564518-21apt-get21:15:131
251199499370,3cyclictest2628000-21apt-config22:45:041
251199499362,12cyclictest2589271-21apt-get21:50:121
2511990993621,5cyclictest835-21file16:32:060
136599360,3rtkit-daemon0-21swapper/119:34:550
251199499351,6cyclictest2599753-21apt-get22:05:141
136599350,4rtkit-daemon1364-21rtkit-daemon21:56:081
136599350,3rtkit-daemon0-21swapper/023:04:310
251199499342,11cyclictest2552932-21apt-get20:50:151
2511990993413,9cyclictest13-21ksoftirqd/021:45:020
136599340,4rtkit-daemon1364-21rtkit-daemon22:59:131
136599340,3rtkit-daemon1364-21rtkit-daemon23:14:141
136599340,3rtkit-daemon0-21swapper/121:55:090
136599340,3rtkit-daemon0-21swapper/023:51:181
251199499337,8cyclictest2517528-21ls19:20:171
251199499333,6cyclictest2638509-21apt-get23:00:111
251199499332,6cyclictest2689182-21python300:15:011
251199499332,12cyclictest2620596-21apt-get22:35:111
251199499331,7cyclictest2554893-21apt-get20:55:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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