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2025-12-24 - 23:17
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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 Wed Dec 24, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81960rcu_preempt0-21swapper/011:10:490
147950770irq/31-eth0-tx-41ktimersoftd/010:53:050
81750rcu_preempt26324-21ssh11:04:120
81750rcu_preempt24779-21ntpdc11:00:521
81750rcu_preempt15686-21ntp_states10:45:491
89850720irq/17-ehci_hcd0-21swapper/108:22:511
81720rcu_preempt32115-21latency_hist07:40:281
81720rcu_preempt22427-21diskmemload11:55:530
81710rcu_preempt5687-21ssh11:23:261
81700rcu_preempt0-21swapper/007:40:460
81680rcu_preempt28058-21timerandwakeup11:05:531
81680rcu_preempt0-21swapper/110:58:111
81680rcu_preempt0-21swapper/110:50:551
81680rcu_preempt0-21swapper/110:15:471
81680rcu_preempt0-21swapper/107:45:521
81680rcu_preempt0-21swapper/011:28:260
81680rcu_preempt0-21swapper/011:21:390
81680rcu_preempt0-21swapper/010:24:380
81680rcu_preempt0-21swapper/009:25:290
81670rcu_preempt22427-21diskmemload09:31:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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