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2026-03-31 - 20:59
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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 Tue Mar 31, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
300342204171,22sleep20-21swapper/207:07:322
139491204170,23phc2sys0-21swapper/307:07:023
299812203170,22sleep10-21swapper/107:06:511
300322201168,22sleep00-21swapper/007:07:300
3023328464,11sleep20-21swapper/207:10:002
30527996610,16cyclictest5436-21/usr/sbin/munin11:55:132
3052799656,23cyclictest4300-1kworker/2:0H09:25:012
139391650,0ptp4l401ktimersoftd/309:20:113
139391650,0ptp4l401ktimersoftd/309:20:103
3052799627,16cyclictest5395-21/usr/sbin/munin10:45:252
3052599625,17cyclictest0-21swapper/011:15:110
3052599615,19cyclictest0-21swapper/010:15:170
3052799608,11cyclictest18094-21chrt08:56:432
30525996011,17cyclictest13488-21sed09:55:220
139391600,1ptp4l401ktimersoftd/309:55:193
3052799598,11cyclictest30956-21unixbench_multi10:30:272
3052599597,17cyclictest0-21swapper/007:35:200
3052799588,11cyclictest28834-21chrt08:12:022
3052799587,12cyclictest13508-21cat09:55:212
3052599577,16cyclictest425-21grep10:35:210
3052599569,18cyclictest20296-21sed09:00:250
3052599567,17cyclictest0-21swapper/007:10:240
3052599567,16cyclictest0-21swapper/011:40:120
30525995610,13cyclictest403-21apt-get09:30:110
3052799556,16cyclictest19548-21/usr/sbin/munin10:10:212
3052599559,9cyclictest13857-21/usr/sbin/munin08:50:190
3052599559,15cyclictest2518-21gnome-shell12:30:230
3052599557,18cyclictest0-21swapper/008:40:170
3052599557,10cyclictest0-21swapper/007:55:270
3052599557,10cyclictest0-21swapper/007:55:270
3052599547,14cyclictest12721-21ls11:00:240
30525995413,9cyclictest16240-21apt08:55:110
3052799536,15cyclictest27550-21/usr/sbin/munin10:25:172
3052599538,8cyclictest14881-21ls11:05:220
3052599538,8cyclictest14881-21ls11:05:220
102332530,2sleep2311rcuc/210:55:242
3052599528,8cyclictest8110-21apt-get12:00:120
3052599527,7cyclictest5342-21apt-get07:25:120
30525995210,15cyclictest5436-21/usr/sbin/munin11:55:170
3052599518,7cyclictest3179-21ls10:40:260
3052599518,13cyclictest2894-21apt-get09:35:120
30525995110,15cyclictest1622-21ls07:15:210
3052799506,14cyclictest12521-21apt-get07:40:122
3052799505,16cyclictest0-21swapper/208:47:212
3052599509,7cyclictest5692-21ls10:45:280
3052599509,6cyclictest14888-21apt-get07:45:110
3052599508,7cyclictest20187-21apt-get12:25:120
3052599508,14cyclictest24535-21apt-get10:20:120
3052599498,14cyclictest7765-21apt-get07:30:130
3052799486,7cyclictest3085-21apt-get11:50:112
3052799486,7cyclictest28303-21apt-get11:35:132
3052799486,6cyclictest24505-21appstreamcli10:20:022
3052799485,7cyclictest11231-21apt-get11:00:112
3052599487,14cyclictest31941-21apt-get08:20:130
3052899470,5cyclictest31478-21apt-get08:20:003
3052799477,7cyclictest2608-21iostat08:25:202
3052799477,7cyclictest2608-21iostat08:25:192
3052799476,7cyclictest17817-21apt-get12:20:112
3052799476,7cyclictest16231-21apt-get11:10:122
3052799476,17cyclictest17195-21apt-get10:05:122
3052799475,7cyclictest19621-21apt-get07:55:122
3052799475,7cyclictest19621-21apt-get07:55:112
3052599479,14cyclictest5267-21/usr/sbin/munin09:40:200
3052599478,14cyclictest13084-21ls08:45:260
30525994710,7cyclictest1690-21memory11:45:210
138792470,2sleep20-21swapper/212:10:232
3052799467,8cyclictest14520-21iostat_ios08:50:162
3052799467,8cyclictest11149-21ls07:35:212
3052799466,7cyclictest25735-21apt-get09:15:122
3052799466,16cyclictest469-21apt-get07:15:132
3052799465,7cyclictest31478-21apt-get08:20:022
3052799465,7cyclictest10480-21apt-get12:05:112
3052599468,14cyclictest26226-21ls12:35:200
3052599468,13cyclictest16919-21ls12:15:260
3052799458,7cyclictest8409-21iostat07:30:192
3052599458,15cyclictest27176-21ps11:30:220
3052599447,14cyclictest0-21swapper/010:50:180
3052599446,10cyclictest0-21swapper/010:05:140
30525994411,13cyclictest22008-21apt-get08:00:100
139391440,0ptp4l401ktimersoftd/310:27:353
3052799436,7cyclictest30357-21meminfo08:15:212
3052599437,7cyclictest3987-21ls07:20:180
30525994310,15cyclictest29315-21/usr/sbin/munin08:15:120
30525994310,14cyclictest16328-21ssh10:00:260
139391430,0ptp4l401ktimersoftd/310:32:013
139391430,0ptp4l401ktimersoftd/310:15:093
30528994231,9cyclictest41-21ksoftirqd/312:25:003
3052599427,8cyclictest2979-21ls08:25:210
3052599427,8cyclictest2979-21ls08:25:210
3052599426,9cyclictest0-21swapper/011:25:220
139391420,1ptp4l401ktimersoftd/308:28:213
139391420,1ptp4l401ktimersoftd/308:28:213
139391420,0ptp4l401ktimersoftd/310:43:273
139391420,0ptp4l401ktimersoftd/309:50:223
3052799406,18cyclictest1300-21snmpd11:05:442
3052799406,18cyclictest1300-21snmpd11:05:442
30526994032,5cyclictest25-21ksoftirqd/112:00:011
30528993934,3cyclictest41-21ksoftirqd/308:55:003
3052799395,19cyclictest0-21swapper/211:25:122
30528993834,3cyclictest41-21ksoftirqd/309:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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