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2026-07-23 - 09:12
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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 Jul 23, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81800rcu_preempt27725-21kernelversion20:57:281
89950780irq/17-ehci_hcd945-21usb-storage19:16:231
81770rcu_preempt0-21swapper/121:27:071
81750rcu_preempt32128-21diskmemload23:32:250
81740rcu_preempt0-21swapper/123:37:021
81730rcu_preempt0-21swapper/023:47:160
146650730irq/31-eth0-tx-0-21swapper/020:57:260
81720rcu_preempt3828-21ssh23:25:120
81710rcu_preempt0-21swapper/022:29:010
81710rcu_preempt0-21swapper/022:14:030
81710rcu_preempt0-21swapper/021:51:150
81700rcu_preempt24748-21diskmemload23:03:220
81700rcu_preempt14989-21ssh23:46:010
81690rcu_preempt12698-1kworker/0:1H21:36:130
81660rcu_preempt31759-21munin-run00:17:060
81660rcu_preempt30870-21/usr/sbin/munin21:12:060
81660rcu_preempt2792-21apt-get21:22:180
81660rcu_preempt11235-21ssh21:37:200
81660rcu_preempt0-21swapper/020:32:210
81650rcu_preempt0-21swapper/123:15:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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