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2026-07-29 - 03:01
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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 rackdslot4.osadl.org (updated Tue Jul 28, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
288592205170,23sleep30-21swapper/307:06:053
291062203170,22sleep00-21swapper/007:09:120
288312202169,22sleep20-21swapper/207:05:442
291652201167,23sleep10-21swapper/107:09:571
138591164124,14phc2sys0-21swapper/307:10:013
138591164124,14phc2sys0-21swapper/307:10:013
116212830,5sleep2223-21systemd-journal09:50:002
106352710,3sleep30-21swapper/308:40:253
29464997023,7cyclictest41-21ksoftirqd/311:52:073
224012650,4sleep2321ktimersoftd/210:10:182
20912580,6sleep12946299cyclictest09:30:131
29464995620,4cyclictest41-21ksoftirqd/311:50:003
29461995511,16cyclictest16718-21/usr/sbin/munin11:05:250
29461995511,16cyclictest16718-21/usr/sbin/munin11:05:250
29464995323,4cyclictest41-21ksoftirqd/311:15:143
307482520,4sleep230750-21needreboot07:10:212
307482520,4sleep230750-21needreboot07:10:212
2946199520,3cyclictest31294-21runrttasks10:29:100
201222520,2sleep30-21swapper/307:55:193
50772510,2sleep30-21swapper/309:35:203
138491510,0ptp4l401ktimersoftd/309:31:053
29464994917,5cyclictest41-21ksoftirqd/311:20:223
29464994917,4cyclictest41-21ksoftirqd/310:30:143
29464994913,8cyclictest41-21ksoftirqd/309:55:143
29464994818,4cyclictest41-21ksoftirqd/312:15:213
29464994816,4cyclictest41-21ksoftirqd/310:35:143
29464994716,8cyclictest41-21ksoftirqd/308:20:103
2946199478,17cyclictest1303-21runrttasks07:16:370
29464994619,7cyclictest41-21ksoftirqd/307:15:143
29464994617,4cyclictest41-21ksoftirqd/310:15:013
29464994617,4cyclictest41-21ksoftirqd/309:40:243
29464994611,8cyclictest41-21ksoftirqd/308:45:273
29464994538,4cyclictest41-21ksoftirqd/312:30:003
29464994525,17cyclictest41-21ksoftirqd/312:35:013
29464994525,17cyclictest41-21ksoftirqd/312:35:003
29464994519,6cyclictest41-21ksoftirqd/312:20:183
29464994514,4cyclictest41-21ksoftirqd/308:35:003
29464994513,4cyclictest41-21ksoftirqd/310:50:143
29464994429,12cyclictest41-21ksoftirqd/307:25:013
29464994416,7cyclictest41-21ksoftirqd/309:10:003
29464994415,7cyclictest41-21ksoftirqd/309:45:193
29464994414,8cyclictest41-21ksoftirqd/311:30:003
29464994413,4cyclictest41-21ksoftirqd/310:29:593
2946499440,3cyclictest121rcu_preempt12:00:253
29462994431,4cyclictest25-21ksoftirqd/111:52:071
29464994315,7cyclictest41-21ksoftirqd/310:55:263
29464994314,3cyclictest41-21ksoftirqd/311:30:143
29464994314,3cyclictest41-21ksoftirqd/311:10:173
29464994313,4cyclictest41-21ksoftirqd/312:00:003
29464994313,4cyclictest41-21ksoftirqd/312:00:003
29464994312,7cyclictest41-21ksoftirqd/312:40:003
29464994312,7cyclictest41-21ksoftirqd/311:40:193
29463994337,3cyclictest1423-21cron10:35:002
29464994216,7cyclictest41-21ksoftirqd/310:40:143
29464994215,7cyclictest41-21ksoftirqd/311:10:013
29464994215,7cyclictest41-21ksoftirqd/311:10:013
2946499421,38cyclictest8963-21cron08:40:003
29464994213,3cyclictest41-21ksoftirqd/312:10:143
29464994210,3cyclictest41-21ksoftirqd/307:40:243
2946499420,3cyclictest121rcu_preempt09:15:003
138491420,0ptp4l401ktimersoftd/311:35:303
2946499419,8cyclictest41-21ksoftirqd/308:00:143
2946499419,7cyclictest41-21ksoftirqd/310:45:133
2946499418,4cyclictest41-21ksoftirqd/307:50:253
2946499411,4cyclictest41-21ksoftirqd/311:00:563
29464994112,4cyclictest41-21ksoftirqd/307:30:133
29463994135,3cyclictest33-21ksoftirqd/210:20:002
2946499409,7cyclictest41-21ksoftirqd/307:25:133
2946499406,4cyclictest41-21ksoftirqd/308:55:203
29464994015,6cyclictest41-21ksoftirqd/307:35:183
29464994013,7cyclictest41-21ksoftirqd/309:20:243
29464994011,7cyclictest41-21ksoftirqd/309:00:153
29464994011,6cyclictest41-21ksoftirqd/308:15:163
29464994010,3cyclictest41-21ksoftirqd/308:05:213
29462994036,3cyclictest25-21ksoftirqd/109:40:001
29461994012,17cyclictest24264-21/usr/sbin/munin08:05:210
2946499399,8cyclictest41-21ksoftirqd/308:25:193
2946499397,3cyclictest41-21ksoftirqd/310:20:143
29464993911,7cyclictest41-21ksoftirqd/309:25:143
29464993910,7cyclictest41-21ksoftirqd/310:00:163
29462993934,3cyclictest25-21ksoftirqd/107:50:001
2946499389,7cyclictest41-21ksoftirqd/309:15:213
29464993833,3cyclictest41-21ksoftirqd/307:50:003
29462993833,3cyclictest25-21ksoftirqd/110:59:591
29462993831,4cyclictest25-21ksoftirqd/107:34:391
2946199386,17cyclictest8313-21cat09:40:260
2946199380,3cyclictest6790-21seq07:29:570
29464993733,2cyclictest41-21ksoftirqd/310:15:143
2946499371,5cyclictest121rcu_preempt08:10:273
29463993731,4cyclictest33-21ksoftirqd/208:53:192
29463993731,4cyclictest33-21ksoftirqd/207:17:072
29463993730,4cyclictest33-21ksoftirqd/207:56:272
29462993733,3cyclictest25-21ksoftirqd/108:35:181
29462993732,3cyclictest25-21ksoftirqd/112:10:141
29462993732,3cyclictest25-21ksoftirqd/111:50:011
29462993732,3cyclictest25-21ksoftirqd/111:05:201
29462993732,3cyclictest25-21ksoftirqd/111:05:191
29462993732,3cyclictest25-21ksoftirqd/108:55:001
29462993730,5cyclictest25-21ksoftirqd/109:53:401
2946199373,3cyclictest6868-21/usr/sbin/munin10:45:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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