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2026-03-16 - 05:19
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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 Mon Mar 16, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31018272275194,28sleep00-21swapper/019:09:590
31015782262183,29sleep10-21swapper/119:07:201
179699890,4rtkit-daemon1795-21rtkit-daemon00:38:020
179699710,3rtkit-daemon1795-21rtkit-daemon00:35:061
179699660,4rtkit-daemon1795-21rtkit-daemon00:16:471
179699600,3rtkit-daemon1795-21rtkit-daemon00:03:261
179699540,3rtkit-daemon1795-21rtkit-daemon22:03:001
179699520,3rtkit-daemon1795-21rtkit-daemon23:05:361
31728572510,4sleep10-21swapper/121:40:101
179699500,3rtkit-daemon0-21swapper/020:42:150
310194099452,14cyclictest3282670-21ls00:15:010
179699450,3rtkit-daemon1795-21rtkit-daemon19:27:491
179699430,4rtkit-daemon1795-21rtkit-daemon23:39:180
310194099425,13cyclictest3194765-21apt-get22:10:130
32586932410,2sleep00-21swapper/023:40:140
310194099402,10cyclictest3149932-21diskmemload23:50:010
310194099402,10cyclictest1-21systemd23:15:020
310194099392,7cyclictest3215570-21latency_hist22:40:010
310194099391,9cyclictest3164551-21apt-get21:30:020
310194099391,8cyclictest3140343-21/usr/sbin/munin20:45:230
179699390,2rtkit-daemon1795-21rtkit-daemon00:20:341
310194599383,7cyclictest3161193-21apt-get21:25:131
310194099381,10cyclictest3124638-21cat20:05:010
179699380,5rtkit-daemon3149932-21diskmemload22:16:500
310194099375,12cyclictest3248001-21expr23:25:180
310194099373,14cyclictest3223728-21ssh22:50:220
310194099372,14cyclictest3252824-21grep23:30:330
310194099371,11cyclictest1728325-1kworker/0:1H21:00:010
310194099370,11cyclictest3282797-20journal-offline00:15:010
179699370,7rtkit-daemon3209072-21kworker/u8:222:34:050
179699370,5rtkit-daemon3109017-40apt-check19:25:210
179699370,4rtkit-daemon1795-21rtkit-daemon23:21:410
179699370,3rtkit-daemon0-21swapper/119:48:551
179699370,18rtkit-daemon3149932-21diskmemload23:12:191
32216072360,12sleep013-21ksoftirqd/022:47:580
310194099361,12cyclictest3216556-21ntpq22:40:210
310194099361,11cyclictest3236828-21date23:10:010
179699360,8rtkit-daemon3150759-21rm21:10:190
179699360,3rtkit-daemon0-21swapper/121:55:091
179699360,3rtkit-daemon0-21swapper/119:51:330
310194599353,8cyclictest3212098-21apt-get22:35:121
310194599353,7cyclictest3269224-21apt-get23:55:141
310194099357,9cyclictest3182314-21sh21:51:200
310194099357,8cyclictest3149932-21diskmemload21:45:030
310194099356,7cyclictest3111012-21apt-get19:30:140
310194099351,14cyclictest3142452-21ls20:50:150
310194099350,9cyclictest3150035-21date21:10:010
310194099350,11cyclictest3117926-21grep19:45:230
310194099350,11cyclictest3115978-21switchtime19:40:230
179699350,8rtkit-daemon26-21ksoftirqd/120:31:251
179699350,4rtkit-daemon1795-21rtkit-daemon00:25:520
179699350,3rtkit-daemon0-21swapper/120:24:431
179699350,3rtkit-daemon0-21swapper/021:41:190
179699350,3rtkit-daemon0-21swapper/020:16:430
310194599344,8cyclictest3222785-21apt-get22:50:151
310194099347,8cyclictest3149932-21diskmemload00:30:030
310194099344,7cyclictest3229964-21taskset23:00:120
310194099342,11cyclictest3191998-21ssh22:05:200
310194099340,13cyclictest3124991-21grep20:05:160
179699340,4rtkit-daemon1795-21rtkit-daemon00:09:250
179699340,3rtkit-daemon0-21swapper/123:58:480
179699340,3rtkit-daemon0-21swapper/119:51:121
310194599333,11cyclictest3191180-21apt-get22:05:111
310194599332,10cyclictest3136439-21apt-get20:35:131
310194099334,8cyclictest3226920-21if_enp2s022:55:180
310194099333,8cyclictest3287809-21timerandwakeup00:20:240
3101940993317,9cyclictest3146227-21apt-get21:00:100
310194099331,13cyclictest3188627-21find22:00:240
310194099331,12cyclictest3205986-21ntpq22:25:210
310194099331,12cyclictest3186039-21runrttasks21:57:090
310194099331,12cyclictest3137265-21grep20:35:220
310194099331,11cyclictest3113704-21ntpq19:35:210
310194099330,13cyclictest3273642-21fschecks_time00:00:180
310194099330,12cyclictest3157657-21ssh21:20:080
179699330,4rtkit-daemon1795-21rtkit-daemon23:16:240
179699330,4rtkit-daemon1795-21rtkit-daemon21:37:540
179699330,4rtkit-daemon1795-21rtkit-daemon21:29:550
179699330,3rtkit-daemon0-21swapper/020:03:211
310194599324,8cyclictest3153950-21apt-get21:15:131
310194599323,9cyclictest3293977-21apt-get00:30:131
310194599322,9cyclictest3276831-21apt-get00:05:131
310194599322,8cyclictest3168916-21apt-get21:35:121
310194099324,8cyclictest3201821-21cat22:20:150
310194099321,9cyclictest3135455-21tr20:30:250
310194099321,11cyclictest3126664-21cpu20:10:150
310194099321,10cyclictest3149932-21diskmemload21:15:130
310194099320,9cyclictest3121725-21mailstats19:55:220
179699320,4rtkit-daemon1795-21rtkit-daemon21:30:091
310194599311,13cyclictest3251769-21sshd23:30:201
310194099314,7cyclictest3102235-21cstates19:10:140
310194099311,7cyclictest3132541-21apt-get20:25:140
179699310,4rtkit-daemon1795-21rtkit-daemon21:08:461
179699310,3rtkit-daemon0-21swapper/023:36:531
179699310,3rtkit-daemon0-21swapper/023:29:521
179699310,3rtkit-daemon0-21swapper/023:19:061
310194599302,8cyclictest3102093-21apt-get19:10:121
310194599302,12cyclictest850-21runrttasks23:50:121
310194599301,13cyclictest3176832-21apt-get21:45:131
310194099302,10cyclictest3106591-21apt-get19:20:090
310194099301,7cyclictest3104618-21apt-get19:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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