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2026-09-13 - 08:48
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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 Sep 13, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81790rcu_preempt0-21swapper/020:58:540
81770rcu_preempt0-21swapper/100:16:081
81760rcu_preempt828-21memory22:46:491
81760rcu_preempt32248-21apt19:56:271
81750rcu_preempt0-21swapper/019:16:450
81740rcu_preempt0-21swapper/119:16:521
81730rcu_preempt31209-21ssh21:39:170
81730rcu_preempt27938-21apt00:46:421
81720rcu_preempt31291-21sh21:39:361
81720rcu_preempt16283-21timerwakeupswit20:56:551
81720rcu_preempt13384-21ssh22:06:521
81720rcu_preempt0-21swapper/100:06:471
81710rcu_preempt32669-21ssh22:46:410
81710rcu_preempt24360-21sh00:38:231
81710rcu_preempt0-21swapper/123:40:071
81700rcu_preempt21391-21diskmemload00:31:371
81700rcu_preempt0-21swapper/121:43:301
146550700irq/30-eth0-tx-0-21swapper/020:20:160
81690rcu_preempt21511-21sh22:22:451
81690rcu_preempt19367-21sh23:22:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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