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2026-07-29 - 06:13
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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 Jul 29, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31665215713,94sleep231712-21cstates18:51:212
640991202,33cyclictest25505-21mailstats23:11:370
640991183,37cyclictest26604-21latency_hist22:21:060
6409911440,11cyclictest0-21swapper/019:26:390
640991142,43cyclictest1401-21cmp23:26:070
640991142,43cyclictest1401-21cmp23:26:070
2734821130,7sleep1618-21cyclictest20:16:251
6509911132,33cyclictest181rcu_preempt23:06:501
6409911139,19cyclictest31007-21grep22:26:400
640991103,39cyclictest28471-21/usr/sbin/munin00:11:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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