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2026-01-07 - 14:06
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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 10 highest latencies:
System rackcslot3.osadl.org (updated Wed Jan 07, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81770rcu_preempt0-21swapper/100:27:451
81760rcu_preempt19-21ksoftirqd/122:04:491
81750rcu_preempt0-21swapper/100:36:321
81740rcu_preempt0-21swapper/123:56:211
81740rcu_preempt0-21swapper/123:26:461
81740rcu_preempt0-21swapper/123:16:191
81730rcu_preempt5354-21wc22:46:061
81720rcu_preempt8871-21ssh22:51:260
81720rcu_preempt2138-21snmpd19:07:401
81720rcu_preempt19-21ksoftirqd/100:12:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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