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2025-07-12 - 12:41
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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 Jul 12, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81770rcu_preempt17120-21cat21:35:471
81760rcu_preempt0-21swapper/023:42:420
89950710irq/17-ehci_hcd23648-21ntp_states20:21:110
89950710irq/17-ehci_hcd23648-21ntp_states20:21:110
81710rcu_preempt0-21swapper/123:34:011
81690rcu_preempt0-21swapper/023:24:150
81690rcu_preempt0-21swapper/022:51:060
81680rcu_preempt2055-21sh23:06:110
81680rcu_preempt0-21swapper/023:05:090
81680rcu_preempt0-21swapper/021:54:300
81680rcu_preempt0-21swapper/021:54:300
81670rcu_preempt10786-21sh21:23:160
81670rcu_preempt0-21swapper/019:06:010
81650rcu_preempt22591-21apt-get21:45:591
81650rcu_preempt0-21swapper/121:14:471
81650rcu_preempt0-21swapper/019:42:440
81640rcu_preempt0-21swapper/123:06:311
81630rcu_preempt2224-21snmpd00:37:291
81630rcu_preempt15453-21timerandwakeup21:31:130
81630rcu_preempt0-21swapper/121:21:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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