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2026-06-08 - 13:04
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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 Mon Jun 08, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81830rcu_preempt0-21swapper/119:08:311
81750rcu_preempt19-21ksoftirqd/122:53:541
89950740irq/17-ehci_hcd945-21usb-storage19:13:170
81710rcu_preempt1923-21ssh21:15:470
81710rcu_preempt0-21swapper/021:18:470
81710rcu_preempt0-21swapper/000:35:260
81700rcu_preempt4705-21sh23:19:380
89550690irq/17-ehci_hcd0-21swapper/023:42:140
81690rcu_preempt29541-1kworker/0:2H19:15:330
81690rcu_preempt0-21swapper/021:47:590
81690rcu_preempt0-21swapper/000:24:480
81680rcu_preempt0-21swapper/123:39:051
81680rcu_preempt0-21swapper/122:32:261
146250680irq/28-eth0-rx-181ktimersoftd/123:26:011
81670rcu_preempt31422-21ssh00:08:591
81670rcu_preempt2828-21latency_hist21:18:191
81670rcu_preempt25951-21tail21:58:460
81670rcu_preempt11621-21mii-tool21:33:361
81670rcu_preempt0-21swapper/023:15:040
81660rcu_preempt9016-21df_abs22:28:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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