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2025-12-02 - 01:32
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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 Dec 01, 2025 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
629429728,24sleep10-21swapper/107:08:521
6586998315,16cyclictest0-21swapper/009:35:250
6591998054,11cyclictest504-21snmpd12:10:321
484027829,36sleep00-21swapper/007:05:150
6586997648,19cyclictest11981-21apt-get08:55:140
51192750,10sleep126-21ksoftirqd/110:05:311
658699718,54cyclictest6187-21apt-get10:10:130
6586997114,51cyclictest0-21swapper/012:00:120
6586997037,28cyclictest18210-21telnet07:40:180
6586997032,22cyclictest14-21ksoftirqd/008:20:000
6586996932,21cyclictest14-21ksoftirqd/012:35:210
6586996915,48cyclictest0-21swapper/010:30:160
6586996914,50cyclictest0-21swapper/009:15:130
6586996913,16cyclictest0-21swapper/010:00:140
6591996838,22cyclictest26-21ksoftirqd/111:25:131
658699686,54cyclictest29849-21apt-get09:45:140
6586996834,18cyclictest14-21ksoftirqd/011:50:000
6586996832,21cyclictest14-21ksoftirqd/011:20:350
6591996634,19cyclictest26-21ksoftirqd/109:40:161
6591996634,18cyclictest26-21ksoftirqd/108:35:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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