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2025-01-14 - 07:32
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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 Jan 14, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81860rcu_preempt19-21ksoftirqd/121:58:051
81770rcu_preempt19-21ksoftirqd/122:45:251
81770rcu_preempt19-21ksoftirqd/121:42:421
81760rcu_preempt19-21ksoftirqd/122:04:161
81740rcu_preempt2018-21ssh23:01:490
81740rcu_preempt0-21swapper/119:20:451
81730rcu_preempt19-21ksoftirqd/100:18:141
89550710irq/17-ehci_hcd111rcuc/000:22:430
81710rcu_preempt831-21ntp_states00:01:500
81710rcu_preempt7403-21ssh22:10:130
81710rcu_preempt32198-21ssh00:01:090
81710rcu_preempt0-21swapper/022:26:550
89950700irq/17-ehci_hcd12733-21sh00:26:071
81700rcu_preempt0-21swapper/021:41:470
81700rcu_preempt0-21swapper/021:35:220
81690rcu_preempt13267-21diskmemload21:59:540
81690rcu_preempt0-21swapper/020:16:500
81670rcu_preempt0-21swapper/000:38:400
81660rcu_preempt19313-21sendmail-msp21:31:320
81660rcu_preempt15506-21diskstats19:16:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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