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2026-05-13 - 04:21
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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 Wed May 13, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3241121620,23sleep20-21swapper/218:57:372
32220212412,82sleep132175-21apt-get18:57:041
3252021159,66sleep032155-21/usr/sbin/munin18:57:520
1202991157,64cyclictest7388-21ssh22:47:181
12099911451,18cyclictest1176-21cyclictest23:06:192
1209991136,58cyclictest6544-21apt-get22:46:392
118899985,75cyclictest31571-21apt-get23:27:260
120999967,51cyclictest31226-21apt-get23:26:352
120999947,41cyclictest8682-21ssh21:01:362
118899921,41cyclictest0-21swapper/000:21:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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