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2026-04-01 - 15:16
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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 Wed Apr 01, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850760irq/17-ehci_hcd29725-21ssh10:25:571
81740rcu_preempt23361-21diskmemload12:05:080
89850730irq/17-ehci_hcd181ktimersoftd/110:09:241
89850720irq/17-ehci_hcd945-21usb-storage10:53:540
81710rcu_preempt3-21ksoftirqd/010:08:090
81710rcu_preempt0-21swapper/010:42:470
81710rcu_preempt0-21swapper/009:23:470
81700rcu_preempt23361-21diskmemload09:53:490
81700rcu_preempt0-21swapper/010:56:230
81690rcu_preempt8668-21sh10:48:470
81690rcu_preempt24558-21if_can107:10:131
81690rcu_preempt23558-21apt-get09:15:060
81690rcu_preempt0-21swapper/109:27:481
81690rcu_preempt0-21swapper/012:41:130
81680rcu_preempt4452-21grep10:40:161
81680rcu_preempt26357-21apt-get09:20:071
81680rcu_preempt0-21swapper/112:24:271
81680rcu_preempt0-21swapper/111:38:111
81680rcu_preempt0-21swapper/110:33:151
81680rcu_preempt0-21swapper/107:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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