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2026-03-12 - 04:56
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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 Mar 12, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
894501070irq/17-ehci_hcd29218-21diskstats19:09:140
811060rcu_preempt19-21ksoftirqd/100:29:161
81800rcu_preempt23670-21ps22:04:241
81780rcu_preempt0-21swapper/119:24:141
81770rcu_preempt5041-21sh23:32:531
81770rcu_preempt4461-21/usr/sbin/munin22:29:251
81760rcu_preempt15751-21/usr/sbin/munin23:54:001
81750rcu_preempt32558-21latency_hist23:24:001
81750rcu_preempt0-21swapper/123:38:251
81750rcu_preempt0-21swapper/000:03:470
81730rcu_preempt7576-21ntp_states21:34:231
81730rcu_preempt26913-21ssh22:10:021
81730rcu_preempt0-21swapper/123:55:401
81730rcu_preempt0-21swapper/000:29:000
81720rcu_preempt0-21swapper/119:14:221
81710rcu_preempt32543-21ssh22:21:460
81710rcu_preempt0-21swapper/122:49:141
81710rcu_preempt0-21swapper/022:50:150
81700rcu_preempt3586-21ssh22:29:050
81700rcu_preempt0-21swapper/022:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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