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2026-06-01 - 21:17
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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 Mon Jun 01, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12833217715,117sleep112897-21grep06:55:461
11919212512,71sleep211920-21/usr/sbin/munin06:55:102
134289910443,55cyclictest28337-21kworker/u18:1+events_unbound10:49:582
13428991022,47cyclictest16958-21ssh11:35:082
134289910036,12cyclictest0-21swapper/210:35:002
1342899993,37cyclictest24378-21taskset09:06:112
1342899983,41cyclictest32210-21fschecks_count07:55:232
1342899983,36cyclictest5878-21latency_hist08:15:012
1342899977,40cyclictest13625-21idleruntime-cro11:29:582
1342899974,33cyclictest1915-21/usr/sbin/munin11:10:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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