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2026-05-19 - 15:56
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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 20 highest latencies:
System rackcslot3.osadl.org (updated Tue May 19, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81820rcu_preempt4964-21ssh10:58:120
81820rcu_preempt0-21swapper/107:07:071
81760rcu_preempt25223-21ssh11:36:521
81750rcu_preempt3746-21apt-get11:56:550
81740rcu_preempt14097-21ntp_states09:17:050
89950710irq/17-ehci_hcd32418-21ssh10:49:401
81710rcu_preempt22279-21diskmemload10:31:500
81710rcu_preempt0-21swapper/012:27:340
81710rcu_preempt0-21swapper/007:21:550
81700rcu_preempt0-21swapper/012:06:020
81690rcu_preempt26352-21sh09:39:090
81690rcu_preempt0-21swapper/011:21:220
81690rcu_preempt0-21swapper/009:49:460
81680rcu_preempt27276-21ssh11:40:150
81680rcu_preempt10157-21diskmemload09:34:530
81680rcu_preempt0-21swapper/011:24:560
81680rcu_preempt0-21swapper/010:30:160
89550660irq/17-ehci_hcd31305-21apt-get08:26:530
81660rcu_preempt9516-21sh12:06:590
81660rcu_preempt18915-21ssh09:26:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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