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2025-05-09 - 05:27
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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 May 09, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81930rcu_preempt19-21ksoftirqd/121:54:251
89850800irq/17-ehci_hcd171rcuc/122:01:071
81790rcu_preempt19-21ksoftirqd/121:25:561
81750rcu_preempt18255-21ssh23:56:430
81750rcu_preempt0-21swapper/122:07:021
81750rcu_preempt0-21swapper/119:09:391
81740rcu_preempt31367-21ssh22:22:161
81740rcu_preempt19-21ksoftirqd/123:39:551
81730rcu_preempt31199-21ntp_kernel_pll_19:24:271
81730rcu_preempt19-21ksoftirqd/100:01:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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