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2025-11-16 - 13:47
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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 Sun Nov 16, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151450830irq/28-eth0-rx-3750-21kworker/1:019:07:021
81780rcu_preempt20584-21missed_timers21:40:201
81750rcu_preempt19-21ksoftirqd/122:07:501
81740rcu_preempt31694-21/usr/sbin/munin20:55:241
81730rcu_preempt0-21swapper/022:13:050
81710rcu_preempt19-21ksoftirqd/121:14:121
81710rcu_preempt12378-21awk00:25:241
81700rcu_preempt19-21ksoftirqd/121:27:461
81700rcu_preempt0-21swapper/020:45:260
81680rcu_preempt7334-21sh21:15:310
90050670irq/17-ehci_hcd946-21usb-storage00:20:001
81670rcu_preempt0-21swapper/120:30:191
81660rcu_preempt0-21swapper/023:46:420
81660rcu_preempt0-21swapper/021:34:440
81650rcu_preempt7185-21ssh00:15:460
81650rcu_preempt28886-21ssh22:55:220
81650rcu_preempt28383-21df_inode23:55:120
81650rcu_preempt19-21ksoftirqd/123:49:251
81640rcu_preempt18029-21needreboot23:35:190
81640rcu_preempt0-21swapper/021:38:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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