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2026-03-22 - 09:15
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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 Mar 22, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13693932266184,29sleep10-21swapper/119:06:371
13693252257181,25sleep00-21swapper/019:05:540
155593921560,4sleep00-21swapper/000:20:210
14868872470,3sleep0161rcuc/022:43:070
179699430,4rtkit-daemon1390523-21apt-get20:00:140
179699390,4rtkit-daemon0-21swapper/119:56:531
14214912370,4sleep01421472-21munin-run21:15:000
14191032340,4sleep11419101-21ssh21:10:231
1369844993430,2cyclictest1454658-1kworker/0:2H22:30:290
136984999327,5cyclictest806-21in:imuxsock23:40:011
136984999320,20cyclictest1458788-21apt-key22:05:011
14121582310,5sleep10-21swapper/120:55:151
136984499319,7cyclictest1521150-21ntp_states23:30:220
179699300,5rtkit-daemon1417691-21diskmemload00:33:530
136984999302,5cyclictest1429351-40apt-check21:25:171
179699290,21rtkit-daemon0-21swapper/000:37:520
14397122290,17sleep00-21swapper/021:39:260
136984999299,6cyclictest1557681-21ssh00:23:151
136984999297,17cyclictest141rcu_preempt00:25:191
1369849992924,3cyclictest1459240-21ssh22:05:061
1369849992910,4cyclictest26-21ksoftirqd/123:41:351
136984499295,17cyclictest1378377-21apt-get19:30:130
1369844992911,6cyclictest0-21swapper/021:42:080
179699280,12rtkit-daemon1429152-21appstreamcli21:25:050
136984499283,9cyclictest141rcu_preempt21:50:050
179699270,20rtkit-daemon1550050-21ssh00:10:270
14356982270,4sleep00-21swapper/021:33:140
136984999277,3cyclictest141rcu_preempt23:08:491
136984999273,17cyclictest1392470-21apt-get20:05:121
1369844992723,3cyclictest66950irq/132-enp2s022:49:270
1369844992715,10cyclictest1499973-21sendmail_mailst23:00:230
1369844992712,2cyclictest141rcu_preempt23:57:250
15054462260,3sleep00-21swapper/023:09:010
136984999268,3cyclictest141rcu_preempt21:45:181
1369849992619,5cyclictest1518203-21ssh23:25:381
1369849992610,10cyclictest1519610-1kworker/u9:000:00:131
136984999252,3cyclictest141rcu_preempt21:35:101
1369849992520,3cyclictest26-21ksoftirqd/122:00:001
1369849992514,6cyclictest1417691-21diskmemload00:05:021
136984999251,2cyclictest141rcu_preempt19:50:121
1369849992511,9cyclictest1519610-1kworker/u9:023:50:131
1369849992511,9cyclictest1509610-21apt-get23:15:121
136984999250,4cyclictest1474458-21memory22:25:201
136984499253,14cyclictest1545467-21apt-get00:05:140
136984499250,3cyclictest1454809-21apt-config22:00:010
179699240,3rtkit-daemon0-21swapper/022:52:430
179699240,3rtkit-daemon0-21swapper/021:24:000
179699240,3rtkit-daemon0-21swapper/020:48:060
15546782240,2sleep11417691-21diskmemload00:19:241
136984999247,2cyclictest141rcu_preempt21:44:571
136984999244,3cyclictest0-21swapper/122:11:141
136984999244,2cyclictest141rcu_preempt23:55:171
136984999242,5cyclictest26-21ksoftirqd/122:50:161
136984999242,14cyclictest1402241-21apt-get20:30:141
1369849992412,7cyclictest26-21ksoftirqd/120:10:131
136984999240,5cyclictest1531878-21pmu-power23:45:221
136984999240,5cyclictest1380694-21gltestperf19:35:191
136984999240,4cyclictest1428825-1kworker/1:2H21:25:001
136984499248,4cyclictest0-21swapper/020:12:310
136984499241,5cyclictest1389943-21python320:00:010
136984499241,3cyclictest1447130-21python321:50:000
1369844992413,8cyclictest1509830-21df23:15:150
136984499241,2cyclictest141rcu_preempt22:10:060
1369844992412,11cyclictest13-21ksoftirqd/023:40:220
179699230,3rtkit-daemon0-21swapper/022:05:560
179699230,3rtkit-daemon0-21swapper/020:26:060
179699230,15rtkit-daemon0-21swapper/020:22:020
136984999238,9cyclictest1472007-21kworker/u8:022:30:121
136984999235,16cyclictest1565747-21cat00:35:011
136984999232,2cyclictest141rcu_preempt22:55:121
136984999232,2cyclictest141rcu_preempt22:47:501
136984999232,15cyclictest1408111-21apt-get20:45:131
136984999232,13cyclictest1415939-21apt-get21:05:151
1369849992317,4cyclictest1370206-21/usr/sbin/munin19:10:161
136984999231,6cyclictest850-21runrttasks19:15:011
136984999231,3cyclictest141rcu_preempt21:30:121
136984999231,3cyclictest141rcu_preempt00:35:131
1369849992312,7cyclictest1464625-1kworker/u9:222:40:111
1369849992312,6cyclictest26-21ksoftirqd/121:15:121
136984999231,20cyclictest1400597-21fschecks_time20:25:171
1369849992311,8cyclictest1513142-21apt-get23:20:131
136984999230,4cyclictest1521504-21ssh23:30:251
136984499233,13cyclictest1470241-21apt-get22:20:130
136984499232,15cyclictest1516737-21apt-get23:25:130
136984499231,9cyclictest1558668-21apt-get00:25:120
1369844992313,5cyclictest66950irq/132-enp2s023:45:130
179699220,3rtkit-daemon0-21swapper/122:16:071
179699220,3rtkit-daemon0-21swapper/023:37:460
179699220,3rtkit-daemon0-21swapper/021:00:290
136984999228,9cyclictest1447324-21kworker/u8:321:50:111
136984999228,4cyclictest0-21swapper/123:10:331
136984999228,12cyclictest0-21swapper/120:45:011
136984999224,10cyclictest1390523-21apt-get20:00:141
136984999223,2cyclictest141rcu_preempt22:20:241
136984999223,12cyclictest1376425-21apt-get19:25:141
136984999223,10cyclictest1404194-21apt-get20:35:131
136984999222,3cyclictest141rcu_preempt22:35:271
136984999222,2cyclictest141rcu_preempt20:24:591
136984999222,13cyclictest1396364-21apt-get20:15:121
136984999222,13cyclictest1374476-21apt-get19:20:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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