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2024-04-27 - 03:35
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Sat Apr 27, 2024 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1008621200,4chrt10085-21needreboot23:10:270
2836321170,4chrt28364-21timerandwakeup22:30:330
391121080,4chrt3913-21timerwakeupswit00:20:380
302472950,4sleep030244-21grep22:35:360
273912860,5chrt27388-21sendmail00:00:000
220792850,4chrt22077-21ntp_offset19:15:260
274752830,4chrt27473-21diskstats21:00:200
171982820,4chrt17196-21cat22:00:320
8052800,7chrt806-21dpkg00:15:010
1885828014,28sleep00-21swapper/019:09:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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