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2026-08-21 - 07:53
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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 Fri Aug 21, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81920rcu_preempt15479-21diskmemload21:21:280
81920rcu_preempt15479-21diskmemload21:21:280
81790rcu_preempt0-21swapper/119:14:521
146650790irq/31-eth0-tx-0-21swapper/023:14:320
81720rcu_preempt0-21swapper/019:29:530
89950700irq/17-ehci_hcd181ktimersoftd/100:46:361
81700rcu_preempt0-21swapper/023:21:130
81700rcu_preempt0-21swapper/022:48:150
81700rcu_preempt0-21swapper/021:30:340
146650700irq/31-eth0-tx-27246-21ssh21:40:040
81690rcu_preempt0-21swapper/000:14:330
89950680irq/17-ehci_hcd0-21swapper/119:58:361
81680rcu_preempt4119-21munin-run20:34:310
81680rcu_preempt3015-21diskmemload21:56:100
81670rcu_preempt0-21swapper/022:25:360
81660rcu_preempt0-21swapper/123:49:281
81650rcu_preempt27328-21ssh22:44:451
81650rcu_preempt0-21swapper/123:59:021
81650rcu_preempt0-21swapper/123:24:541
81650rcu_preempt0-21swapper/121:27:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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