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2026-09-01 - 04:09
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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 Tue Sep 01, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19302272273190,20sleep10-21swapper/119:08:041
19302912268185,28sleep00-21swapper/019:08:450
20295682600,5sleep10-21swapper/122:20:571
21005482580,3sleep00-21swapper/000:06:480
136599500,4rtkit-daemon1364-21rtkit-daemon22:53:220
1930542994614,7cyclictest13-21ksoftirqd/020:05:000
20003482450,2sleep00-21swapper/021:40:140
136599450,7rtkit-daemon2073472-21ntp_states23:25:211
136599450,2rtkit-daemon0-21swapper/023:13:340
136599430,4rtkit-daemon2051986-21apt-get22:55:131
136599420,3rtkit-daemon0-21swapper/019:38:430
193054699412,11cyclictest1982691-21apt-get21:15:141
193054699410,14cyclictest2062588-21grep23:10:161
193054699400,15cyclictest2079815-21grep23:35:161
193054299408,3cyclictest141rcu_preempt22:10:000
193054299405,2cyclictest141rcu_preempt22:00:000
193054699394,14cyclictest1980514-21ssh21:10:411
193054699394,13cyclictest2078761-21ssh23:33:451
193054699391,13cyclictest2085101-21ssh23:42:271
193054699391,13cyclictest1949212-21grep19:55:171
193054699390,12cyclictest2119901-21apt-get00:35:131
193054699390,12cyclictest2105401-21apt-get00:15:111
193054299397,3cyclictest141rcu_preempt23:05:230
136599390,3rtkit-daemon0-21swapper/020:10:220
193054699384,14cyclictest2038900-21/usr/sbin/munin22:35:191
193054699384,14cyclictest1956402-21taskset20:12:411
193054699384,13cyclictest2112814-21ssh00:25:131
193054699384,13cyclictest1999417-21ssh21:38:551
193054699381,12cyclictest20048932sleep121:45:311
193054699381,12cyclictest1959232-21apt-get20:20:151
193054699380,14cyclictest2043850-21sh22:42:111
193054699380,10cyclictest1987143-21ls21:20:211
193054299384,13cyclictest13-21ksoftirqd/023:40:130
1930542993816,7cyclictest13-21ksoftirqd/021:05:010
193054699373,18cyclictest1978116-21expr21:05:271
193054699373,13cyclictest2027295-21ssh22:18:511
1930546993716,12cyclictest2069235-21apt-get23:20:131
193054699371,13cyclictest19348182sleep119:18:181
193054299376,3cyclictest141rcu_preempt21:25:160
193054699363,13cyclictest2067773-21sh23:17:081
193054699363,13cyclictest1991329-21seq21:26:061
193054699361,14cyclictest19545852sleep120:09:151
193054699361,13cyclictest20925972sleep123:54:071
136599360,3rtkit-daemon0-21swapper/019:14:410
136599360,3rtkit-daemon0-21swapper/000:36:580
193054699352,11cyclictest21039232sleep100:12:061
193054699352,11cyclictest21039232sleep100:12:051
193054699351,13cyclictest2093187-21/usr/sbin/munin23:55:201
193054699351,13cyclictest19387262sleep119:27:551
193054699343,10cyclictest2060923-21chrt23:07:061
193054699342,12cyclictest2012498-21ssh21:57:021
193054699342,11cyclictest1976719-21taskset21:04:291
193054699341,13cyclictest2118052-21sh00:31:011
193054699341,13cyclictest2046753-21sh22:45:421
193054699341,12cyclictest20981042sleep100:00:551
193054699341,12cyclictest20084892sleep121:50:411
193054699341,12cyclictest19952382sleep121:32:191
193054699340,13cyclictest2049996-21awk22:50:251
193054699340,13cyclictest1963720-21sed20:30:171
193054699340,13cyclictest1961673-21cat20:25:181
193054299347,3cyclictest141rcu_preempt23:55:220
193054299347,2cyclictest141rcu_preempt00:30:170
193054299345,3cyclictest141rcu_preempt23:35:230
1930542993410,8cyclictest2033499-21sh22:26:560
1930542993410,8cyclictest2033499-21sh22:26:560
193054699332,14cyclictest1935492-21/usr/sbin/munin19:20:171
193054699332,11cyclictest20583882sleep123:04:261
193054699331,12cyclictest20880702sleep123:46:201
193054699331,12cyclictest19523482sleep120:01:161
193054699331,11cyclictest2018778-21chrt22:05:401
193054699331,11cyclictest20161702sleep122:02:501
193054699331,11cyclictest1978754-21diskmemload22:10:101
193054699331,11cyclictest19690372sleep120:45:071
193054699331,11cyclictest19306532chrt19:10:021
193054699330,12cyclictest21005412sleep100:06:471
193054699330,11cyclictest1941373-21grep19:35:181
193054299338,2cyclictest141rcu_preempt21:35:100
193054299336,3cyclictest141rcu_preempt20:20:000
193054299336,3cyclictest13-21ksoftirqd/023:50:220
193054299335,17cyclictest141rcu_preempt22:55:120
193054299333,11cyclictest2041714-21/usr/sbin/munin22:40:200
1930542993319,5cyclictest13-21ksoftirqd/021:16:440
1930542993311,3cyclictest141rcu_preempt22:20:120
1930542993311,3cyclictest141rcu_preempt21:30:140
1930542993311,3cyclictest141rcu_preempt00:10:110
1930542993311,3cyclictest141rcu_preempt00:10:100
1930542993310,3cyclictest141rcu_preempt22:15:130
193054699322,10cyclictest20019432chrt21:41:361
193054699321,11cyclictest20365252sleep122:30:441
193054699321,11cyclictest19686012sleep120:42:221
193054699321,10cyclictest19709922sleep120:50:031
193054699320,14cyclictest2110571-21awk00:20:241
193054699320,12cyclictest19745542sleep120:58:071
193054299327,2cyclictest141rcu_preempt22:30:110
1930542993215,4cyclictest13-21ksoftirqd/021:15:000
193054699310,10cyclictest2034075-21sshd22:28:151
193054699310,10cyclictest2034075-21sshd22:28:141
193054299318,3cyclictest141rcu_preempt23:25:140
193054299318,3cyclictest141rcu_preempt23:18:320
193054299318,3cyclictest141rcu_preempt00:25:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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