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2026-07-10 - 12:00
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 10 highest latencies:
System rackbslot7.osadl.org (updated Fri Jul 10, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1843022260,19sleep30-21swapper/318:53:043
192229911081,21cyclictest23398-21apt-key20:47:241
192299910848,43cyclictest11085-21ntpd23:47:532
1327821070,4sleep113250-21ssh23:17:201
192299910483,14cyclictest19230-21munin-plugin-st23:27:202
19229991033,85cyclictest4614-21apt-get23:02:342
19229999929,37cyclictest0-21swapper/200:23:282
19213999872,8cyclictest181rcu_preempt22:05:240
19213999872,8cyclictest181rcu_preempt22:05:240
19213999854,10cyclictest181rcu_preempt20:22:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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