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2026-08-07 - 20:03
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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 20 highest latencies:
System rackdslot3.osadl.org (updated Fri Aug 07, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
99512230163,23sleep30-21swapper/307:07:563
100612203170,22sleep20-21swapper/207:09:152
97952202169,22sleep10-21swapper/107:05:531
97892202169,22sleep00-21swapper/007:05:470
410221690,6sleep01041099cyclictest11:25:190
1041399630,21cyclictest10460-21cat10:30:253
1041399600,20cyclictest23596-21ptp4l07:35:233
1041399600,19cyclictest10269-21chrt11:40:023
130782580,3sleep30-21swapper/307:15:143
139391560,1ptp4l391rcuc/310:35:243
1041399530,20cyclictest2536-21awk11:20:273
199382520,3sleep125-21ksoftirqd/107:30:111
1041399521,35cyclictest30975-21/usr/sbin/munin09:00:143
1041399520,20cyclictest4515-21/usr/sbin/munin12:35:153
1041399500,20cyclictest27639-21seq11:07:013
1041399490,28cyclictest23169-21taskset08:44:343
1041399490,26cyclictest17270-21/usr/sbin/munin09:40:223
10412994818,28cyclictest23512-21phc2sys-jitter07:35:232
1041399471,18cyclictest1300-21snmpd07:21:113
1041399470,20cyclictest1300-21snmpd08:04:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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