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2026-08-19 - 22:48
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Wed Aug 19, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30553662277217,46sleep10-21swapper/107:09:141
30554272258189,53sleep00-21swapper/007:09:540
305553699189183,4cyclictest3096350-21kworker/u8:108:53:240
32289142610,4sleep10-21swapper/112:05:201
31473112570,4sleep10-21swapper/110:08:531
136599550,4rtkit-daemon1364-21rtkit-daemon10:43:421
32193242530,3sleep00-21swapper/011:50:560
136599480,4rtkit-daemon1364-21rtkit-daemon07:24:441
136599470,4rtkit-daemon1364-21rtkit-daemon07:38:090
136599460,3rtkit-daemon1364-21rtkit-daemon11:33:131
31967152450,1chrt3196714-21turbostat11:20:000
32099922440,4sleep126-21ksoftirqd/111:38:271
30625862440,4sleep13062589-21gltestperf07:25:171
136599440,4rtkit-daemon1364-21rtkit-daemon08:55:081
136599430,4rtkit-daemon1364-21rtkit-daemon07:15:251
136599400,7rtkit-daemon3230179-21ssh12:07:050
305553999391,8cyclictest26-21ksoftirqd/109:45:021
305553999380,9cyclictest26-21ksoftirqd/112:00:011
305553999380,8cyclictest26-21ksoftirqd/112:10:241
305553999380,10cyclictest26-21ksoftirqd/111:15:011
136599370,3rtkit-daemon0-21swapper/112:29:561
305553999367,7cyclictest26-21ksoftirqd/110:20:211
305553999360,9cyclictest26-21ksoftirqd/110:40:011
305553999360,8cyclictest3203747-21cat11:30:001
305553999360,8cyclictest26-21ksoftirqd/112:30:241
305553999360,6cyclictest3227908-21ssh12:05:001
136599360,8rtkit-daemon3079705-21taskset08:09:340
136599360,4rtkit-daemon0-21swapper/111:45:520
305553999355,9cyclictest26-21ksoftirqd/109:16:191
305553999351,9cyclictest26-21ksoftirqd/112:20:111
305553999351,7cyclictest26-21ksoftirqd/109:55:011
305553999350,8cyclictest26-21ksoftirqd/111:20:011
305553999350,6cyclictest26-21ksoftirqd/110:30:001
136599350,3rtkit-daemon0-21swapper/108:25:241
136599350,3rtkit-daemon0-21swapper/011:11:490
136599350,3rtkit-daemon0-21swapper/009:13:570
305553999345,9cyclictest26-21ksoftirqd/107:45:141
305553999344,8cyclictest26-21ksoftirqd/111:44:051
305553999340,9cyclictest26-21ksoftirqd/110:55:191
136599340,3rtkit-daemon0-21swapper/110:29:260
136599340,3rtkit-daemon0-21swapper/009:38:040
305553999330,9cyclictest26-21ksoftirqd/110:45:211
305553999330,9cyclictest26-21ksoftirqd/108:30:231
305553999330,8cyclictest26-21ksoftirqd/109:55:241
305553999330,8cyclictest26-21ksoftirqd/109:30:001
136599330,4rtkit-daemon1364-21rtkit-daemon07:52:231
136599330,3rtkit-daemon1364-21rtkit-daemon11:02:081
136599330,3rtkit-daemon0-21swapper/107:24:510
305553999321,9cyclictest26-21ksoftirqd/112:15:091
305553999321,8cyclictest26-21ksoftirqd/109:10:551
305553999320,9cyclictest26-21ksoftirqd/109:35:151
305553999320,8cyclictest26-21ksoftirqd/110:50:241
305553999320,8cyclictest26-21ksoftirqd/108:24:591
305553999320,8cyclictest26-21ksoftirqd/107:45:011
305553999320,7cyclictest3101458-21which09:00:231
305553999320,10cyclictest3214993-21/usr/sbin/munin11:45:191
305553999320,10cyclictest26-21ksoftirqd/112:35:211
136599320,4rtkit-daemon1364-21rtkit-daemon10:18:301
136599320,4rtkit-daemon1364-21rtkit-daemon09:27:380
136599320,3rtkit-daemon1364-21rtkit-daemon11:17:571
136599320,3rtkit-daemon0-21swapper/110:47:520
136599320,3rtkit-daemon0-21swapper/108:28:200
136599320,3rtkit-daemon0-21swapper/008:15:561
305553999317,9cyclictest26-21ksoftirqd/109:30:191
305553999313,4cyclictest26-21ksoftirqd/110:02:191
305553999313,3cyclictest26-21ksoftirqd/107:55:231
305553999311,10cyclictest26-21ksoftirqd/111:09:091
305553999310,7cyclictest3149076-21sendmail_mailtr10:10:231
305553999310,7cyclictest3102278-21python309:05:021
305553999310,10cyclictest26-21ksoftirqd/109:22:271
305553699310,6cyclictest3086204-21date08:25:000
136599310,4rtkit-daemon3133371-21ssh09:49:100
136599310,3rtkit-daemon0-21swapper/008:53:081
136599310,3rtkit-daemon0-21swapper/008:12:431
136599310,3rtkit-daemon0-21swapper/007:37:441
305553999300,6cyclictest31275602sleep109:40:221
136599300,4rtkit-daemon3169543-21strings10:40:210
136599300,3rtkit-daemon0-21swapper/112:12:070
136599300,3rtkit-daemon0-21swapper/110:37:180
136599300,3rtkit-daemon0-21swapper/108:40:320
305553999292,4cyclictest26-21ksoftirqd/111:55:001
305553999291,7cyclictest251rcuc/108:37:481
305553999290,8cyclictest26-21ksoftirqd/108:40:171
305553999290,7cyclictest3162489-21/usr/sbin/munin10:30:191
3055536992914,9cyclictest3245879-21apt-get12:30:140
136599290,3rtkit-daemon1364-21rtkit-daemon09:32:430
136599290,3rtkit-daemon1364-21rtkit-daemon09:05:430
136599290,3rtkit-daemon0-21swapper/112:03:130
136599290,23rtkit-daemon3055532-21cyclictest07:45:170
305553999282,8cyclictest26-21ksoftirqd/107:12:061
305553999280,9cyclictest26-21ksoftirqd/108:00:271
305553999280,9cyclictest26-21ksoftirqd/107:30:171
305553699282,21cyclictest3094559-21apt-get08:45:140
136599280,4rtkit-daemon26-21ksoftirqd/107:12:450
136599280,4rtkit-daemon1364-21rtkit-daemon11:22:260
136599280,3rtkit-daemon1364-21rtkit-daemon10:14:140
136599280,3rtkit-daemon0-21swapper/108:33:140
305553999270,7cyclictest3095026-21/usr/sbin/munin08:45:191
3055536992715,10cyclictest13-21ksoftirqd/010:20:000
305553699270,6cyclictest0-21swapper/008:11:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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