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2026-07-14 - 15:39
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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 Tue Jul 14, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4042215911,109sleep03757-21/usr/sbin/munin06:52:290
5272991153,90cyclictest27990-21apt-get09:22:241
394221149,69sleep23972-21fschecks_count06:52:272
52619911246,15cyclictest2374-21systemd-journal10:57:360
5272991083,77cyclictest2382-21apt-get10:27:311
5272991083,77cyclictest2382-21apt-get10:27:311
52619910252,10cyclictest2366-21ssh09:32:360
5261999754,34cyclictest16272-21grep07:27:240
528099929,64cyclictest20683-21apt-get10:57:232
527299922,61cyclictest12802-21apt-get07:17:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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