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2026-07-22 - 09:42
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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 Jul 22, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81880rcu_preempt24840-21df_abs19:12:131
89950800irq/17-ehci_hcd945-21usb-storage21:22:231
81790rcu_preempt2192-21snmpd19:44:070
89950770irq/17-ehci_hcd0-21swapper/019:12:090
81770rcu_preempt17690-21ssh22:57:131
81750rcu_preempt23713-21diskmemload00:37:181
81740rcu_preempt32526-21ssh23:22:211
81720rcu_preempt19-21ksoftirqd/121:52:541
81700rcu_preempt23713-21diskmemload00:23:331
81700rcu_preempt0-21swapper/100:17:221
81690rcu_preempt22592-21sh23:04:441
81690rcu_preempt1501-21/usr/sbin/munin21:32:281
81690rcu_preempt0-21swapper/123:41:161
81690rcu_preempt0-21swapper/122:16:321
81690rcu_preempt0-21swapper/121:43:521
81690rcu_preempt0-21swapper/120:59:231
81690rcu_preempt0-21swapper/100:32:221
81680rcu_preempt3214-21irqstats23:27:211
81680rcu_preempt15216-21python23:47:401
81680rcu_preempt0-21swapper/120:37:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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