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2026-04-20 - 04:54
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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 Mon Apr 20, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37882217151,22sleep00-21swapper/019:06:110
40452205172,22sleep20-21swapper/219:09:272
40762204169,23sleep30-21swapper/319:09:523
39152202168,22sleep10-21swapper/119:07:451
3128221520,6sleep1438499cyclictest20:05:181
139391810,1ptp4l391rcuc/300:35:253
139391560,1ptp4l391rcuc/323:15:313
4312520,2sleep30-21swapper/320:10:013
139391500,1ptp4l391rcuc/322:34:163
438599491,45cyclictest18590-21kworker/2:119:55:232
409124937,6sleep00-21swapper/019:10:010
164482490,2sleep10-21swapper/119:35:001
4385994516,27cyclictest0-21swapper/222:40:332
4384994540,3cyclictest25726-21sh19:55:001
438599440,43cyclictest0-21swapper/223:00:232
438599440,43cyclictest0-21swapper/223:00:232
139391440,0ptp4l401ktimersoftd/319:16:153
139391430,0ptp4l401ktimersoftd/323:33:403
139391430,0ptp4l401ktimersoftd/322:23:283
139391430,0ptp4l401ktimersoftd/321:53:313
438699421,2cyclictest0-21swapper/323:40:533
139391420,1ptp4l401ktimersoftd/321:21:183
139391420,0ptp4l401ktimersoftd/321:42:523
139391420,0ptp4l401ktimersoftd/321:04:413
139391420,0ptp4l401ktimersoftd/300:12:043
57898410,8rtkit-daemon0-21swapper/021:13:550
139391410,0ptp4l401ktimersoftd/323:26:433
57898390,3rtkit-daemon32463-21users20:05:270
57898390,2rtkit-daemon0-21swapper/121:57:011
4385993911,26cyclictest0-21swapper/221:20:232
438599389,27cyclictest0-21swapper/221:05:332
4385993810,26cyclictest0-21swapper/221:45:332
438599380,2cyclictest14198-21apt-get00:00:122
4383993831,4cyclictest9-21ksoftirqd/020:25:260
4386993731,4cyclictest41-21ksoftirqd/321:36:133
4386993716,18cyclictest4315-21apt-key23:40:013
438699371,34cyclictest0-21swapper/300:25:533
438599377,28cyclictest0-21swapper/219:14:432
4385993731,4cyclictest33-21ksoftirqd/223:46:462
4384993731,4cyclictest25-21ksoftirqd/123:03:491
4384993731,4cyclictest25-21ksoftirqd/123:03:481
4384993730,4cyclictest25-21ksoftirqd/120:20:051
57898360,5rtkit-daemon0-21swapper/021:17:560
57898360,5rtkit-daemon0-21swapper/021:17:560
4386993631,3cyclictest41-21ksoftirqd/320:55:003
4385993631,3cyclictest33-21ksoftirqd/220:45:112
4385993630,4cyclictest33-21ksoftirqd/200:33:322
4384993631,3cyclictest25-21ksoftirqd/119:37:381
4384993630,4cyclictest25-21ksoftirqd/123:08:101
4384993630,4cyclictest25-21ksoftirqd/122:55:381
4384993630,4cyclictest25-21ksoftirqd/122:31:031
4384993630,4cyclictest25-21ksoftirqd/121:31:541
4384993630,4cyclictest25-21ksoftirqd/121:25:561
4384993630,4cyclictest1-21systemd00:04:541
4384993629,4cyclictest25-21ksoftirqd/122:15:471
4384993629,4cyclictest25-21ksoftirqd/120:47:011
4383993630,3cyclictest14770-21irqrtprio19:30:180
57898350,2rtkit-daemon0-21swapper/019:43:440
4386993529,4cyclictest41-21ksoftirqd/322:41:443
4386993513,19cyclictest5897-21/usr/sbin/munin22:35:273
4386993513,19cyclictest14183-21/usr/sbin/munin00:00:273
4385993513,20cyclictest21350-21kworker/2:023:40:132
4384993529,4cyclictest25-21ksoftirqd/123:33:211
4384993529,4cyclictest25-21ksoftirqd/122:12:411
4384993529,4cyclictest25-21ksoftirqd/121:48:271
4384993529,4cyclictest25-21ksoftirqd/120:26:191
4384993529,3cyclictest25-21ksoftirqd/119:45:111
4383993531,2cyclictest9-21ksoftirqd/000:00:010
4383993530,3cyclictest9-21ksoftirqd/020:00:120
57898340,3rtkit-daemon0-21swapper/020:34:170
4386993429,3cyclictest41-21ksoftirqd/321:55:123
4386993428,4cyclictest41-21ksoftirqd/320:49:443
4386993413,19cyclictest1833-21apache220:16:293
4386993413,18cyclictest23227-21interrupts20:55:183
4386993410,21cyclictest11924-21diskstats19:25:163
438699340,20cyclictest0-21swapper/321:30:273
4385993428,4cyclictest33-21ksoftirqd/223:52:442
4385993428,4cyclictest33-21ksoftirqd/222:18:492
4385993428,4cyclictest33-21ksoftirqd/221:33:232
4385993428,4cyclictest33-21ksoftirqd/220:58:172
4385993428,4cyclictest33-21ksoftirqd/220:54:282
4385993415,3cyclictest22516-21acpi23:10:112
438599341,17cyclictest14900-21cat20:40:002
4384993429,3cyclictest25-21ksoftirqd/122:45:101
4384993429,3cyclictest25-21ksoftirqd/100:33:221
4384993428,4cyclictest25-21ksoftirqd/123:39:581
4384993428,4cyclictest25-21ksoftirqd/120:44:331
4384993428,4cyclictest25-21ksoftirqd/120:33:451
4384993428,4cyclictest25-21ksoftirqd/119:55:541
4384993428,4cyclictest25-21ksoftirqd/119:26:181
4384993428,4cyclictest25-21ksoftirqd/119:13:221
4383993429,3cyclictest9-21ksoftirqd/000:05:110
4383993428,4cyclictest9-21ksoftirqd/023:53:100
4383993428,4cyclictest9-21ksoftirqd/023:07:370
4383993427,5cyclictest9-21ksoftirqd/023:12:380
4386993327,4cyclictest41-21ksoftirqd/319:13:243
4386993327,3cyclictest11317-21irqrtprio22:45:173
4386993326,4cyclictest41-21ksoftirqd/321:05:443
4386993312,18cyclictest15392-21/usr/sbin/munin22:55:263
4386993311,19cyclictest29644-21ptp4l20:00:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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