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2026-03-13 - 13:51
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackcslot3.osadl.org (updated Fri Mar 13, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850930irq/17-ehci_hcd22654-21/usr/sbin/munin22:49:201
6163998518cyclictest23161-21latency_hist21:49:031
147950760irq/31-eth0-tx-181ktimersoftd/100:17:491
89850740irq/17-ehci_hcd6226-21ssh21:16:391
81740rcu_preempt16433-21ssh22:36:320
81740rcu_preempt0-21swapper/020:49:270
147850740irq/30-eth0-tx-0-21swapper/019:13:580
81720rcu_preempt4547-21if_can022:14:190
81720rcu_preempt19357-21ssh21:39:550
81720rcu_preempt12874-21ntpq00:34:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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