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2026-08-24 - 10:04
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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 Mon Aug 24, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81740rcu_preempt4709-1kworker/1:2H00:08:591
81740rcu_preempt29471-21munin-run23:49:471
81720rcu_preempt15884-21latency_hist21:14:470
81720rcu_preempt0-21swapper/000:38:450
89950710irq/17-ehci_hcd945-21usb-storage22:32:251
81710rcu_preempt0-21swapper/119:16:351
81710rcu_preempt0-21swapper/020:40:080
81700rcu_preempt21286-21sh00:36:381
81700rcu_preempt0-21swapper/121:24:291
81700rcu_preempt0-21swapper/120:45:031
81700rcu_preempt0-21swapper/120:45:031
81690rcu_preempt24511-21sh00:43:530
81690rcu_preempt0-21swapper/122:52:071
81690rcu_preempt0-21swapper/122:18:501
81690rcu_preempt0-21swapper/000:02:170
81680rcu_preempt0-21swapper/122:37:021
81680rcu_preempt0-21swapper/023:27:170
81680rcu_preempt0-21swapper/019:15:020
81670rcu_preempt9445-21mailstats22:05:111
81670rcu_preempt31799-21sendmail20:09:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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