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2026-01-11 - 23:16
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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 rackdslot3.osadl.org (updated Sun Jan 11, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206168,27phc2sys0-21swapper/307:06:283
48242205172,22sleep20-21swapper/207:07:092
47412202169,22sleep10-21swapper/107:06:031
50112200167,22sleep00-21swapper/007:09:280
1408921420,3sleep0534399cyclictest10:50:140
139391940,71ptp4l0-21swapper/307:10:003
534599614,16cyclictest8460-21/usr/sbin/munin09:30:172
534599565,11cyclictest30044-21date12:35:002
534599555,18cyclictest30419-21cat10:15:202
534599534,10cyclictest6830-21needreboot11:40:212
534599533,11cyclictest19372-21cut11:00:202
534599523,17cyclictest10613-21/usr/sbin/munin08:25:252
207892520,2sleep30-21swapper/307:40:183
534599514,19cyclictest22275-21cat07:45:002
534599504,8cyclictest23521-21apt-get11:10:122
5344995022,3cyclictest25-21ksoftirqd/110:05:251
534599495,14cyclictest21081-21ls12:10:192
534599494,9cyclictest3016-21apt-get09:20:132
534599494,14cyclictest16625-21df08:40:142
534599485,16cyclictest3375-21grep11:35:122
534599484,7cyclictest1046-21ls10:20:262
534599483,7cyclictest11432-21apt-get10:45:132
534599474,16cyclictest1300-21snmpd09:47:312
534599454,9cyclictest17601-21/usr/sbin/munin12:05:232
534599452,16cyclictest18985-21timedrift07:35:272
534499459,10cyclictest25-21ksoftirqd/108:10:181
534599443,11cyclictest4287-21dpkg10:30:102
534499442,3cyclictest121rcu_preempt11:45:001
5344994415,4cyclictest25-21ksoftirqd/107:15:291
534599434,8cyclictest654-21apt-config11:30:012
534599432,7cyclictest7750-21apt-get07:15:132
5344994338,3cyclictest10224-21cron11:50:001
139391430,0ptp4l401ktimersoftd/311:00:243
139391430,0ptp4l401ktimersoftd/310:41:003
5344994225,3cyclictest25-21ksoftirqd/107:10:211
5344994214,6cyclictest25-21ksoftirqd/109:00:001
5344994212,9cyclictest25-21ksoftirqd/109:55:291
139391420,0ptp4l401ktimersoftd/311:23:043
139391420,0ptp4l401ktimersoftd/307:35:153
534599414,7cyclictest3019-21meminfo08:10:192
534599413,8cyclictest22826-21users08:50:272
534599413,16cyclictest23951-21perl08:55:152
534499418,9cyclictest25-21ksoftirqd/112:20:011
5344994114,7cyclictest25-21ksoftirqd/107:25:141
5344994111,4cyclictest25-21ksoftirqd/107:25:001
5344994110,4cyclictest25-21ksoftirqd/111:10:001
139391410,0ptp4l401ktimersoftd/309:14:073
534599402,7cyclictest16171-21apt-get10:55:112
534499407,2cyclictest25-21ksoftirqd/110:45:211
534499406,3cyclictest25-21ksoftirqd/108:30:011
5344994035,3cyclictest25-21ksoftirqd/112:24:591
5344994035,3cyclictest25-21ksoftirqd/111:35:001
5344994034,3cyclictest25-21ksoftirqd/111:30:011
5344994010,8cyclictest25-21ksoftirqd/107:55:221
5344994010,4cyclictest25-21ksoftirqd/108:50:141
5344994010,4cyclictest25-21ksoftirqd/107:45:131
534399402,35cyclictest5496-21grep10:30:210
534599393,7cyclictest28944-21users07:55:272
534499398,4cyclictest25-21ksoftirqd/110:55:011
534499397,5cyclictest25-21ksoftirqd/109:25:161
534499396,8cyclictest25-21ksoftirqd/112:30:251
5344993911,7cyclictest25-21ksoftirqd/109:15:001
134491390,2getstats0-21swapper/309:15:373
534499389,8cyclictest25-21ksoftirqd/107:35:261
534499389,3cyclictest25-21ksoftirqd/109:00:261
534499388,9cyclictest25-21ksoftirqd/112:35:141
534499384,2cyclictest121rcu_preempt09:35:171
5344993834,2cyclictest25-21ksoftirqd/111:40:001
5344993810,7cyclictest25-21ksoftirqd/111:55:231
5344993810,4cyclictest25-21ksoftirqd/111:10:131
534599373,7cyclictest1592-21meminfo09:15:212
534499378,8cyclictest25-21ksoftirqd/110:30:221
534499377,7cyclictest25-21ksoftirqd/110:10:131
534499376,3cyclictest25-21ksoftirqd/108:35:141
534499374,3cyclictest121rcu_preempt10:20:241
534499374,2cyclictest121rcu_preempt08:40:171
5344993733,2cyclictest25-21ksoftirqd/110:35:251
5344993732,3cyclictest25-21ksoftirqd/112:10:111
5344993732,3cyclictest25-21ksoftirqd/111:55:001
5344993732,3cyclictest25-21ksoftirqd/111:25:001
5344993732,3cyclictest25-21ksoftirqd/109:24:591
5344993725,10cyclictest25-21ksoftirqd/108:30:191
534499371,8cyclictest25-21ksoftirqd/108:05:171
5343993715,19cyclictest1317-21runrttasks07:35:210
5343993713,22cyclictest32086-21swap11:25:260
5343993713,21cyclictest19923-21dpkg07:40:000
534699361,2cyclictest121rcu_preempt11:31:203
5345993630,4cyclictest33-21ksoftirqd/208:05:092
5345993629,5cyclictest33-21ksoftirqd/212:19:182
534499367,8cyclictest25-21ksoftirqd/108:20:161
534499367,4cyclictest25-21ksoftirqd/111:00:141
534499367,4cyclictest25-21ksoftirqd/110:55:151
534499366,4cyclictest25-21ksoftirqd/110:00:121
534499365,8cyclictest25-21ksoftirqd/109:05:201
534499365,8cyclictest25-21ksoftirqd/109:05:201
534499364,2cyclictest121rcu_preempt08:00:141
534499363,9cyclictest25-21ksoftirqd/107:30:221
5344993631,3cyclictest25-21ksoftirqd/110:45:001
5344993630,3cyclictest25-21ksoftirqd/109:50:001
5344993630,3cyclictest25-21ksoftirqd/107:55:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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