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2025-12-14 - 00:54
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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 rack1slot2.osadl.org (updated Sat Dec 13, 2025 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
408623826,0sleep20-21swapper/207:08:172
382323627,0sleep30-21swapper/307:05:263
392123329,0sleep10-21swapper/107:06:201
385022723,0sleep00-21swapper/007:05:310
8305060,0irq/26-0000:00:2468-21if_eth1.309:00:193
8305060,0irq/26-0000:00:11692-21munin-run08:00:033
43079965,0cyclictest2549-21sed08:15:212
43079960,0cyclictest0-21swapper/209:33:262
43059960,0cyclictest9472-21ssh12:17:460
43059960,0cyclictest0-21swapper/011:48:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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