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2025-11-21 - 06:18
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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 Nov 21, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81720rcu_preempt29649-21latency_hist22:59:541
81720rcu_preempt13911-21df_abs23:30:081
81710rcu_preempt15164-21ssh21:31:261
81710rcu_preempt0-21swapper/020:30:160
81690rcu_preempt0-21swapper/021:11:350
81680rcu_preempt30884-21sh22:00:191
81680rcu_preempt23857-21sh23:48:541
81670rcu_preempt5539-21ssh21:15:071
81670rcu_preempt5485-21k10sensors19:10:191
81670rcu_preempt0-21swapper/122:48:461
81660rcu_preempt9087-21ntp_kernel_err21:20:171
81660rcu_preempt5392-21/usr/sbin/munin23:14:541
81660rcu_preempt0-21swapper/123:00:111
81660rcu_preempt0-21swapper/122:51:121
81660rcu_preempt0-21swapper/122:25:131
81660rcu_preempt0-21swapper/122:10:171
81660rcu_preempt0-21swapper/120:50:161
81660rcu_preempt0-21swapper/021:31:200
151450660irq/28-eth0-rx-41ktimersoftd/023:06:240
81650rcu_preempt6121-21idleruntime19:15:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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