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2026-03-16 - 03:49
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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 Mon Mar 16, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256579911213,83cyclictest0-21swapper/019:50:130
256609911110,32cyclictest0-21swapper/119:30:121
25657991107,89cyclictest14-21ksoftirqd/019:30:130
256579911071,26cyclictest14-21ksoftirqd/019:25:120
256579910970,27cyclictest14-21ksoftirqd/021:55:130
256609910812,28cyclictest0-21swapper/120:40:101
256609910812,28cyclictest0-21swapper/120:25:221
256579910812,83cyclictest0-21swapper/023:20:120
256579910711,82cyclictest0-21swapper/023:15:230
256579910661,30cyclictest14-21ksoftirqd/019:15:240
256579910510,81cyclictest0-21swapper/020:40:120
256579910336,53cyclictest0-21swapper/022:55:120
256579910325,66cyclictest879-21gpm23:35:240
256579910313,32cyclictest0-21swapper/020:50:120
256579910256,32cyclictest0-21swapper/019:35:140
256579910137,49cyclictest500-21snmpd22:35:090
256579910053,34cyclictest14-21ksoftirqd/020:25:250
25657999933,54cyclictest0-21swapper/000:20:110
25657999852,34cyclictest14-21ksoftirqd/000:00:160
25657999850,34cyclictest14-21ksoftirqd/021:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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