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2026-08-02 - 19:33
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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 Sun Aug 02, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt0-21swapper/110:33:401
81750rcu_preempt8079-21grep10:28:131
81730rcu_preempt31461-21cpuspeed_turbos09:08:121
81730rcu_preempt30829-21ntp_kernel_pll_12:08:241
81730rcu_preempt0-21swapper/111:28:191
89950720irq/17-ehci_hcd945-21usb-storage07:58:201
81720rcu_preempt0-21swapper/109:33:191
81710rcu_preempt0-21swapper/109:03:191
81710rcu_preempt0-21swapper/010:43:240
81710rcu_preempt0-21swapper/008:18:190
81700rcu_preempt0-21swapper/112:33:151
81690rcu_preempt0-21swapper/110:09:541
81690rcu_preempt0-21swapper/109:44:211
81680rcu_preempt1355-21diskmemload09:58:541
81680rcu_preempt0-21swapper/112:27:421
81680rcu_preempt0-21swapper/112:07:561
81680rcu_preempt0-21swapper/110:56:411
81680rcu_preempt0-21swapper/110:21:161
81680rcu_preempt0-21swapper/012:15:110
81670rcu_preempt2978-21ntp_states07:13:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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