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2026-08-04 - 22:25
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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 04, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81900rcu_preempt23088-21ssh11:14:321
146650820irq/31-eth0-tx-0-21swapper/010:33:140
81730rcu_preempt30385-21diskstats12:28:251
81730rcu_preempt26531-21ssh12:21:081
81730rcu_preempt22488-21ntp_offset09:13:321
81730rcu_preempt22057-21ssh12:13:220
81730rcu_preempt16488-21diskstats11:03:251
81730rcu_preempt0-21swapper/011:48:240
81720rcu_preempt19-21ksoftirqd/110:50:071
81710rcu_preempt24972-21cyclictest12:05:161
81710rcu_preempt21816-21ssh10:13:270
81710rcu_preempt0-21swapper/111:45:541
81710rcu_preempt0-21swapper/110:25:001
81710rcu_preempt0-21swapper/107:18:341
81700rcu_preempt27353-21/usr/sbin/munin11:23:261
81700rcu_preempt22891-21diskmemload09:58:211
81700rcu_preempt22891-21diskmemload09:53:211
81700rcu_preempt0-21swapper/109:33:211
81700rcu_preempt0-21swapper/010:07:550
81690rcu_preempt6420-21sh09:44:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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