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2026-05-20 - 04:36
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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 rack0slot2.osadl.org (updated Wed May 20, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17778962950,1sleep71777898-21cut20:37:597
159577225948,8sleep50-21swapper/519:07:285
15948382469,31sleep70-21swapper/719:03:137
1596069994039,0cyclictest0-21swapper/721:23:037
1596069994039,0cyclictest0-21swapper/721:23:037
1596069993732,4cyclictest2048134-21latency_hist22:37:407
159577123626,7sleep40-21swapper/419:07:274
1596069993330,1cyclictest1743883-21munin-run20:22:407
1596069993328,4cyclictest2265438-21latency_hist00:07:397
1596063993329,3cyclictest2277990-21kworker/u16:4+flush-8:000:23:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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