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2026-04-29 - 08:17
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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 Apr 29, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25928211613,67sleep125930-21/usr/sbin/munin18:57:321
274009911336,12cyclictest0-21swapper/223:12:372
27400991064,41cyclictest11384-21fschecks_time23:57:362
27400999913,65cyclictest10504-21apt-get23:02:292
2739399993,84cyclictest352-21runrttasks22:37:400
2739399993,84cyclictest352-21runrttasks22:37:400
2740099954,71cyclictest27666-21apt-get22:37:292
2740099954,71cyclictest27666-21apt-get22:37:292
27393999575,12cyclictest12095-21grep23:57:500
27400999367,18cyclictest8078-21/usr/sbin/munin23:52:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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