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2025-10-15 - 02:49
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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 Oct 14, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81970rcu_preempt14883-21diskmemload12:00:521
81790rcu_preempt30469-21df_abs12:30:010
81750rcu_preempt10407-21df_abs11:55:021
81740rcu_preempt26178-21df_abs07:50:031
81740rcu_preempt22135-21if_wlan012:15:081
81730rcu_preempt3593-21latency_hist08:29:481
81730rcu_preempt27764-21processes09:35:151
81730rcu_preempt0-21swapper/011:01:160
89950720irq/17-ehci_hcd171rcuc/111:14:101
81710rcu_preempt16376-21ssh10:11:400
81700rcu_preempt16472-21needreboot07:10:101
81700rcu_preempt0-21swapper/110:50:061
81700rcu_preempt0-21swapper/110:30:301
81690rcu_preempt28083-21ssh11:29:171
81690rcu_preempt0-21swapper/109:25:011
81680rcu_preempt20813-21ssh09:24:311
81680rcu_preempt0-21swapper/111:53:541
81680rcu_preempt0-21swapper/110:43:131
81680rcu_preempt0-21swapper/110:07:461
89950670irq/17-ehci_hcd0-21swapper/108:46:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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