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2026-05-22 - 12:55
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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 Fri May 22, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3037421237,74sleep230375-21cpu18:56:002
3037421237,74sleep230375-21cpu18:56:002
30587211513,64sleep130646-21tune2fs18:56:281
30587211513,64sleep130646-21tune2fs18:56:281
3158321066,16sleep00-21swapper/018:59:200
3158321066,16sleep00-21swapper/018:59:200
31845999361,23cyclictest8156-21ssh21:56:382
31845999361,23cyclictest8156-21ssh21:56:382
223552910,7sleep222360-21unixbench_multi20:06:172
31845999051,10cyclictest181rcu_preempt23:03:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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