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2026-03-22 - 08:12
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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 Sun Mar 22, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850890irq/17-ehci_hcd1099-21jbd2/sda1-822:09:261
81790rcu_preempt0-21swapper/123:12:521
81780rcu_preempt13407-21ssh21:26:421
81750rcu_preempt417-21ntp_states23:04:501
147950750irq/31-eth0-tx-0-21swapper/122:54:091
81730rcu_preempt21556-21mailstats20:04:521
81720rcu_preempt7942-21cat19:14:261
81710rcu_preempt26093-21kworker/1:222:28:271
81710rcu_preempt0-21swapper/122:54:451
81700rcu_preempt5912-21diskmemload23:26:010
81700rcu_preempt18187-21sh22:37:380
81700rcu_preempt18187-21sh22:37:380
81700rcu_preempt0-21swapper/123:56:031
81700rcu_preempt0-21swapper/119:54:421
81700rcu_preempt0-21swapper/023:56:580
81700rcu_preempt0-21swapper/023:09:510
81700rcu_preempt0-21swapper/022:47:470
81700rcu_preempt0-21swapper/020:24:490
81700rcu_preempt0-21swapper/000:03:260
81690rcu_preempt26555-21ssh21:51:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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