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2026-04-19 - 05:36
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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 Sun Apr 19, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5792242313269,29sleep00-21swapper/019:06:330
5793552266199,53sleep10-21swapper/119:07:561
179699920,3rtkit-daemon1795-21rtkit-daemon19:44:090
6787172610,5sleep00-21swapper/022:20:220
5924402600,4sleep0592436-21seq19:40:000
179699540,4rtkit-daemon1795-21rtkit-daemon23:27:571
179699520,4rtkit-daemon1795-21rtkit-daemon21:54:121
179699520,4rtkit-daemon1795-21rtkit-daemon20:11:360
179699510,4rtkit-daemon1795-21rtkit-daemon00:29:391
57966799490,20cyclictest757824-21latency_hist00:15:011
179699490,3rtkit-daemon1795-21rtkit-daemon23:30:051
579667994810,14cyclictest588445-21appstreamcli19:30:031
179699480,3rtkit-daemon1795-21rtkit-daemon00:20:301
57966799469,12cyclictest673801-21apt-get22:15:081
57966799462,31cyclictest0-21swapper/119:55:011
179699460,3rtkit-daemon1795-21rtkit-daemon00:35:371
57966799457,16cyclictest751863-21sed00:05:011
179699450,1rtkit-daemon1795-21rtkit-daemon23:50:390
57966799449,12cyclictest695449-21apt-get22:45:131
57966799448,20cyclictest649822-21apt-get21:40:121
57966799447,11cyclictest1-21systemd22:35:001
579667994410,12cyclictest670692-21apt-get22:10:121
57966799438,20cyclictest758052-21apt-get00:15:121
57966799438,12cyclictest631582-21apt-get21:15:131
57966799437,12cyclictest681532-21apt-get22:25:131
6442992420,3sleep0627639-21diskmemload21:32:000
57966799426,12cyclictest627747-21cat21:10:011
579667994212,10cyclictest719484-21ssh23:18:011
579667994211,11cyclictest627639-21diskmemload22:55:431
57966799417,19cyclictest767809-21apt-get00:30:131
57966799417,19cyclictest646301-21apt-get21:35:131
57966799415,21cyclictest594602-21apt-get19:45:131
57966799415,12cyclictest723842-21latency_hist23:25:001
579667994111,10cyclictest715983-21ssh23:13:041
579667994111,10cyclictest592295-21chrt19:38:451
579667994110,11cyclictest732823-21runrttasks23:35:371
579667994110,11cyclictest640557-21taskset21:26:401
179699410,1rtkit-daemon1795-21rtkit-daemon22:13:220
57966799409,11cyclictest737426-21ssh23:43:581
57966799407,18cyclictest655610-21sshd21:48:021
57966799406,11cyclictest609325-21sed20:20:221
57966799405,9cyclictest707350-21mailstats23:00:251
579667994010,12cyclictest700695-21chrt22:51:501
579667994010,11cyclictest747701-21taskset23:58:501
579667994010,10cyclictest693842-21chrt22:41:371
179699400,3rtkit-daemon0-21swapper/122:03:431
57966799399,8cyclictest677918-21apt-get22:20:131
57966799399,12cyclictest615590-21taskset20:37:001
57966799399,10cyclictest754728-21seq00:08:451
57966799397,12cyclictest627901-21apt-get21:10:121
57966799397,10cyclictest668765-21rm22:06:001
57966799395,20cyclictest741674-21apt-get23:50:131
579667993921,10cyclictest642272-21apt-get21:30:141
179699390,4rtkit-daemon1795-21rtkit-daemon23:58:140
57966799389,17cyclictest587833-21seq19:28:161
57966799389,16cyclictest613807-21seq20:33:461
57966799389,14cyclictest712017-21sshd23:08:031
57966799389,13cyclictest605893-21taskset20:12:451
57966799388,18cyclictest616892-21awk20:40:211
57966799388,18cyclictest616892-21awk20:40:201
57966799388,18cyclictest603874-21sshd20:07:021
57966799387,14cyclictest738301-21ls23:45:131
57966799386,20cyclictest583374-21sed19:15:241
57966799386,11cyclictest606963-21sed20:15:191
579667993821,10cyclictest660273-21apt-get21:55:111
579667993810,17cyclictest619721-21seq20:49:131
579667993810,10cyclictest637543-21ssh21:22:431
179699380,6rtkit-daemon598816-21fschecks_time19:55:160
57966799378,11cyclictest580418-21/usr/sbin/munin19:10:191
57966799377,14cyclictest625069-21sed21:00:221
57966799377,14cyclictest623072-21sed20:55:261
57966799377,10cyclictest584900-21latency19:20:191
57966799376,11cyclictest601530-21sed20:00:261
57966799375,9cyclictest689596-21cat22:35:241
179699370,4rtkit-daemon767541-21sh00:29:590
179699370,3rtkit-daemon0-21swapper/022:34:380
57966799367,18cyclictest620632-21sed20:50:191
57966799367,11cyclictest610843-21memory20:25:181
579663993628,6cyclictest638497-21cut21:25:010
179699360,3rtkit-daemon0-21swapper/123:09:110
179699360,3rtkit-daemon0-21swapper/022:55:110
57966799355,12cyclictest599608-21sed19:55:231
179699350,3rtkit-daemon0-21swapper/121:54:280
179699350,3rtkit-daemon0-21swapper/019:46:180
179699340,5rtkit-daemon719455-21ssh23:17:560
179699340,4rtkit-daemon1795-21rtkit-daemon21:28:560
179699340,3rtkit-daemon0-21swapper/100:36:130
179699340,3rtkit-daemon0-21swapper/023:34:090
179699340,3rtkit-daemon0-21swapper/023:00:400
57966799339,9cyclictest594128-21seq19:42:171
179699330,3rtkit-daemon0-21swapper/119:24:340
179699320,4rtkit-daemon1795-21rtkit-daemon20:04:370
179699320,4rtkit-daemon1795-21rtkit-daemon19:50:480
179699320,3rtkit-daemon0-21swapper/120:24:220
179699310,5rtkit-daemon725907-21ssh23:26:520
179699310,3rtkit-daemon1795-21rtkit-daemon00:00:360
179699310,3rtkit-daemon0-21swapper/120:40:280
179699310,3rtkit-daemon0-21swapper/120:40:270
179699310,3rtkit-daemon0-21swapper/100:31:580
179699300,3rtkit-daemon1795-21rtkit-daemon22:40:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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