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2026-06-17 - 22:23
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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 rack3slot6.osadl.org (updated Wed Jun 17, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7736210229,24sleep10-21swapper/107:08:391
735621020,6chrt7354-21apt-config11:40:020
8048998916,63cyclictest0-21swapper/009:50:120
8048998916,58cyclictest0-21swapper/010:55:110
758528917,27sleep00-21swapper/007:07:020
8048998735,45cyclictest457-21dbus-daemon08:15:010
8048998715,60cyclictest0-21swapper/011:10:130
8048998715,60cyclictest0-21swapper/011:10:130
804899867,66cyclictest25857-21apt-get12:30:110
8048998617,60cyclictest0-21swapper/012:15:120
8048998615,59cyclictest0-21swapper/011:50:130
8048998514,63cyclictest0-21swapper/012:35:140
8048998513,58cyclictest0-21swapper/007:55:120
804899846,66cyclictest18239-21apt-get10:40:100
804899846,65cyclictest26350-21apt-get08:00:120
8048998417,53cyclictest0-21swapper/009:10:130
8048998416,55cyclictest0-21swapper/011:00:140
255602840,7sleep125552-21sshd11:00:161
804899837,65cyclictest7987-21apt-get08:40:150
804899832,18cyclictest20328-21timerwakeupswit07:40:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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