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2026-07-02 - 07:37
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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
Characteristics of the 20 highest latencies:
System rackdslot3.osadl.org (updated Thu Jul 02, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491237170,22phc2sys0-21swapper/319:05:513
212122228163,22sleep00-21swapper/019:06:510
213802207174,22sleep20-21swapper/219:08:192
214392202170,21sleep10-21swapper/119:09:061
3258921350,3sleep32180499cyclictest00:00:153
21803996611,11cyclictest27845-21cut21:35:212
21803996610,11cyclictest7229-21needreboot19:45:222
2180399659,11cyclictest5580-21taskset23:05:012
2180399659,11cyclictest17788-21sort22:20:262
2180399658,11cyclictest11842-21fschecks_count22:10:142
21803996511,18cyclictest15116-21df_abs21:10:122
2180399639,11cyclictest23296-21sed23:40:172
21803996210,11cyclictest23044-21cut21:25:192
76322610,4sleep32180499cyclictest00:15:153
2180399619,10cyclictest10734-21date19:55:012
2180399618,11cyclictest3488-21latency_hist19:40:012
2180399618,11cyclictest12964-21latency_hist20:00:002
2180399609,12cyclictest4146-21find21:55:022
2180399609,11cyclictest25026-21irqrtprio19:15:192
2180399609,10cyclictest10413-21mailstats22:05:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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