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2026-09-01 - 18:58
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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 Tue Sep 01, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950760irq/17-ehci_hcd171rcuc/109:55:121
81730rcu_preempt31828-21kworker/0:207:15:560
81730rcu_preempt30868-21if_eth110:20:490
81730rcu_preempt11879-21ps08:00:530
81720rcu_preempt9835-21sh10:42:450
81720rcu_preempt28429-21ssh12:22:000
81720rcu_preempt22189-21ssh10:04:260
81720rcu_preempt19797-21timerwakeupswit08:30:551
81720rcu_preempt13542-21rm11:53:251
89950710irq/17-ehci_hcd0-21swapper/111:15:481
81710rcu_preempt3227-21ssh10:30:411
81710rcu_preempt21589-21sh12:09:590
81710rcu_preempt0-21swapper/011:40:520
81700rcu_preempt22778-21ssh11:08:240
81700rcu_preempt0-21swapper/110:15:471
81700rcu_preempt0-21swapper/108:55:491
81700rcu_preempt0-21swapper/108:25:511
81700rcu_preempt0-21swapper/107:40:531
89950690irq/17-ehci_hcd945-21usb-storage08:50:481
81690rcu_preempt12230-21ssh10:47:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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