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2025-04-02 - 08:02
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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 rackbslot7.osadl.org (updated Wed Apr 02, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232049912757,58cyclictest0-21swapper/019:42:180
232339911053,50cyclictest28585-21latency_hist23:02:203
2321299952,47cyclictest6980-21apt-get23:22:331
2322499943,56cyclictest15257-21df_inode22:38:232
216982926,14sleep30-21swapper/319:02:283
23224999017,41cyclictest26293-21munin-run23:57:192
2322499893,58cyclictest16055-21apt-get20:27:332
2322499893,58cyclictest16055-21apt-get20:27:332
23212998729,10cyclictest23042-21fschecks_count22:52:401
23212998322,14cyclictest15768-21fschecks_count23:37:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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