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2026-08-25 - 11:48
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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 Aug 25, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt19-21ksoftirqd/121:26:471
81770rcu_preempt0-21swapper/119:15:261
81760rcu_preempt19-21ksoftirqd/122:23:061
89950730irq/17-ehci_hcd0-21swapper/122:37:581
81710rcu_preempt0-21swapper/020:20:160
81700rcu_preempt0-21swapper/021:49:270
81680rcu_preempt7511-21grep19:25:160
81680rcu_preempt29756-21munin-run23:14:510
81680rcu_preempt0-21swapper/123:37:271
81680rcu_preempt0-21swapper/021:33:300
81670rcu_preempt12454-21ntp_states19:45:141
81670rcu_preempt0-21swapper/123:28:391
81670rcu_preempt0-21swapper/123:04:371
81670rcu_preempt0-21swapper/120:47:061
81670rcu_preempt0-21swapper/120:40:591
81670rcu_preempt0-21swapper/100:09:391
81660rcu_preempt0-21swapper/100:39:391
81650rcu_preempt20872-21ssh21:52:441
81650rcu_preempt0-21swapper/123:15:211
81650rcu_preempt0-21swapper/122:49:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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