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2026-08-22 - 08:21
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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 Sat Aug 22, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810rcu_preempt31474-21cpuspeed_turbos00:14:511
81800rcu_preempt23332-21turbostat.cron20:19:301
81790rcu_preempt5892-1kworker/0:0H23:03:340
81790rcu_preempt19-21ksoftirqd/123:13:411
81790rcu_preempt0-21swapper/100:05:001
81780rcu_preempt3297-21latency_hist00:24:371
81780rcu_preempt0-21swapper/123:25:031
81780rcu_preempt0-21swapper/123:25:031
81780rcu_preempt0-21swapper/120:54:531
81780rcu_preempt0-21swapper/119:15:001
81760rcu_preempt19-21ksoftirqd/123:45:151
81760rcu_preempt19-21ksoftirqd/121:25:401
81760rcu_preempt0-21swapper/122:18:431
146550760irq/30-eth0-tx-181ktimersoftd/123:15:561
81750rcu_preempt0-21swapper/122:07:341
81730rcu_preempt9286-21awk00:35:001
81730rcu_preempt8101-21sh21:22:080
81730rcu_preempt15709-21/usr/sbin/munin19:49:360
81730rcu_preempt0-21swapper/122:49:531
81730rcu_preempt0-21swapper/120:19:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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