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2026-07-06 - 01:28
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Sun Jul 05, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1508022460,15sleep00-21swapper/007:05:170
139491207173,23phc2sys0-21swapper/307:09:543
164362203171,22sleep10-21swapper/107:07:161
163552203169,22sleep20-21swapper/207:06:122
2405121450,3sleep00-21swapper/010:45:220
869221320,3sleep31710499cyclictest11:20:233
29912700,7sleep01710199cyclictest08:55:140
17104996011,9cyclictest11364-21cat11:25:243
1710499587,7cyclictest19067-21perl08:20:153
1710499575,16cyclictest0-21swapper/307:15:233
139391560,1ptp4l391rcuc/307:20:213
1710499548,9cyclictest2518-21gnome-shell11:03:593
1710499538,14cyclictest13804-21ps11:30:223
1710499538,10cyclictest29386-21rt-features08:40:243
1710499537,9cyclictest2518-21gnome-shell08:02:593
1710499528,15cyclictest19902-21timerwakeupswit10:35:273
1710499519,14cyclictest5173-21latency_hist09:00:003
1710499515,17cyclictest0-21swapper/307:35:213
1710499508,15cyclictest1229-21irqstats11:05:203
1710499508,15cyclictest1229-21irqstats11:05:203
1710499508,13cyclictest30485-21ssh09:50:253
1710499507,8cyclictest1029-21ps08:50:183
1710499507,17cyclictest28293-21mailstats07:30:253
1710499495,5cyclictest0-21swapper/312:34:553
1710499494,8cyclictest23218-21cstates10:45:143
1710499479,8cyclictest20013-21hwlatdetect09:30:173
1710499477,7cyclictest7002-21ps10:10:193
1710499476,7cyclictest16673-21ls11:35:273
1710499467,8cyclictest1300-21snmpd08:36:553
1710499467,17cyclictest7745-21ps12:25:233
17102994629,7cyclictest25-21ksoftirqd/110:57:581
1710199461,2cyclictest0-21swapper/010:57:580
1710499459,16cyclictest3964-21/usr/sbin/munin10:05:273
1710499459,16cyclictest26602-21/usr/sbin/munin09:45:223
1710499447,7cyclictest5588-21diskstats09:00:173
17104994439,3cyclictest14480-21cron09:20:003
1710399442,2cyclictest121rcu_preempt08:15:122
17101994438,4cyclictest26368-21cron09:45:010
1710499437,13cyclictest22292-21ls10:40:273
1710499436,8cyclictest10955-21ls09:10:203
17103994314,27cyclictest32472-21kworker/2:207:30:222
139391430,0ptp4l401ktimersoftd/309:06:013
1710499427,8cyclictest1300-21snmpd11:17:283
1710499426,7cyclictest27029-21ls10:50:273
17103994220,4cyclictest26371-21sh09:45:012
17103994213,28cyclictest2005-21kworker/2:110:50:232
139391420,0ptp4l401ktimersoftd/307:55:033
139391420,0ptp4l401ktimersoftd/307:40:213
17102994135,3cyclictest25-21ksoftirqd/109:59:341
1710499407,14cyclictest32219-21perl12:10:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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