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2026-05-16 - 15:43
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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 Sat May 16, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
626699992cyclictest10586-21diskstats09:21:410
81790rcu_preempt15722-21ssh11:29:321
81790rcu_preempt0-21swapper/107:09:221
81760rcu_preempt9074-21ntp_states11:16:491
81760rcu_preempt0-21swapper/109:14:531
81750rcu_preempt0-21swapper/110:51:051
81740rcu_preempt3689-21memory12:06:471
81730rcu_preempt7405-21ssh09:16:371
81730rcu_preempt4254-21diskmemload09:32:271
81730rcu_preempt0-21swapper/111:07:201
81720rcu_preempt19085-21apt-get08:01:370
81720rcu_preempt19-21ksoftirqd/111:54:151
81720rcu_preempt0-21swapper/112:35:151
81710rcu_preempt19646-21grep09:36:521
81710rcu_preempt1461-21sh10:03:011
81710rcu_preempt14391-21ntp_states10:26:480
81700rcu_preempt31715-21diskmemload10:00:120
81700rcu_preempt26333-21sh09:50:140
81690rcu_preempt8547-21apt-get12:16:390
81690rcu_preempt7368-21sh10:14:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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