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2025-12-30 - 12:01
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot6.osadl.org (updated Tue Dec 30, 2025 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2663421270,6chrt26633-21cut23:55:191
22113991107,81cyclictest0-21swapper/020:30:110
22113991087,78cyclictest0-21swapper/021:50:150
22113999525,35cyclictest23107-21expr23:45:180
22118999015,60cyclictest0-21swapper/119:30:121
22113999027,34cyclictest548-21runrttasks22:47:070
22113999025,33cyclictest6199-21chrt19:55:180
2211899899,29cyclictest7524-21apt-get21:30:231
22118998923,22cyclictest10560-21cat23:10:221
22118998910,69cyclictest0-21swapper/123:50:231
2211399896,15cyclictest0-21swapper/020:10:140
2211399896,13cyclictest0-21swapper/021:20:110
2211899878,27cyclictest32671-21apt-get21:10:131
2035628736,38sleep10-21swapper/119:05:131
22118998624,20cyclictest250-21systemd-journal20:51:081
2211399867,58cyclictest0-21swapper/023:55:150
22118998424,20cyclictest2535-21load21:15:261
22113998425,38cyclictest28658-21expr00:00:200
210802845,67sleep021086-21ntp_states19:05:270
22118998326,18cyclictest500-21snmpd22:49:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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