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2026-05-28 - 21:05
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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 May 28, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt10799-1kworker/1:1H12:40:061
81740rcu_preempt719-21latency_hist10:37:261
81740rcu_preempt20760-21timerwakeupswit12:12:521
81740rcu_preempt17256-21df_abs11:07:400
79950740irq/19-0000:00:19582-21/usr/sbin/munin07:07:440
81730rcu_preempt0-21swapper/110:37:421
81720rcu_preempt27409-21apt-get09:27:370
81720rcu_preempt22582-21df_abs11:17:421
81720rcu_preempt0-21swapper/012:32:270
81710rcu_preempt10035-21cpu08:37:401
81710rcu_preempt0-21swapper/111:12:411
81710rcu_preempt0-21swapper/012:02:010
146550710irq/30-eth0-tx-171rcuc/112:07:271
81700rcu_preempt27190-21ssh10:25:290
81700rcu_preempt21779-21ssh10:15:460
81700rcu_preempt0-21swapper/111:50:341
81700rcu_preempt0-21swapper/010:28:330
81690rcu_preempt19078-21ssh12:11:101
81690rcu_preempt0-21swapper/111:06:551
81690rcu_preempt0-21swapper/109:28:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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