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2025-12-22 - 18:03
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackaslot8.osadl.org (updated Mon Dec 22, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232652292262,19sleep10-21swapper/107:06:211
233722267244,14sleep20-21swapper/207:07:432
234252265233,21sleep00-21swapper/007:08:250
232622251223,19sleep30-21swapper/307:06:193
140482150,0sleep20-21swapper/207:55:202
2365799111,9cyclictest22613-21turbostat11:55:003
236579995,3cyclictest18137-21cron11:45:003
236579986,1cyclictest34-21ksoftirqd/308:10:003
236539985,2cyclictest14836-21runrttasks08:00:132
236469986,1cyclictest12-21ksoftirqd/011:00:000
236469983,3cyclictest275-21systemd-journal08:03:130
236579974,2cyclictest4976-11brltty07:45:173
236579973,3cyclictest9457-21apt-get11:25:133
236579973,3cyclictest658-21snmpd11:56:083
236579973,3cyclictest658-21snmpd11:30:593
236579973,3cyclictest658-21snmpd08:51:063
236579973,3cyclictest504-21dbus-daemon10:10:023
236579973,3cyclictest19543-21apt-get10:35:123
236579973,3cyclictest11566-21ntpq10:15:183
236539973,3cyclictest658-21snmpd12:12:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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