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2025-12-18 - 12:13
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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 Thu Dec 18, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81730rcu_preempt18948-21munin-run00:25:100
81720rcu_preempt0-21swapper/022:50:290
81710rcu_preempt25901-21strings19:25:300
81710rcu_preempt0-21swapper/121:46:301
81690rcu_preempt19295-21diskmemload00:19:580
81690rcu_preempt0-21swapper/022:35:530
81680rcu_preempt20175-21apt-esm-hook19:05:181
81680rcu_preempt19295-21diskmemload23:45:180
147850680irq/30-eth0-tx-20081-21latency_hist22:00:100
81670rcu_preempt5414-21sh00:04:050
81670rcu_preempt2138-21snmpd21:31:500
81670rcu_preempt20740-21memory19:05:250
81660rcu_preempt23649-21wc19:15:340
81660rcu_preempt19295-21diskmemload21:16:360
81660rcu_preempt11921-21sh00:14:120
81660rcu_preempt0-21swapper/023:20:390
81660rcu_preempt0-21swapper/022:05:580
81650rcu_preempt0-21swapper/100:31:151
81650rcu_preempt0-21swapper/100:18:241
81640rcu_preempt31118-21ssh23:05:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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