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2026-04-24 - 19:05
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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 Fri Apr 24, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491229163,22phc2sys0-21swapper/307:08:473
188552204170,23sleep20-21swapper/207:08:562
186132202170,21sleep10-21swapper/107:05:451
188162198166,21sleep00-21swapper/007:08:250
1924099619,9cyclictest6770-21systemctl08:55:222
134491600,2getstats11945-21ls11:20:263
1924099588,12cyclictest5289-21date08:55:022
19240995710,19cyclictest9509-21awk09:00:262
1924099567,11cyclictest2560-21cat07:40:192
1924099557,8cyclictest3030-21sendmail_mailqu12:10:242
1924099546,10cyclictest28392-21cpuspeed10:50:112
1924099545,15cyclictest12687-21ptp4l-jitter08:00:232
310952530,2sleep00-21swapper/010:55:140
1924099538,14cyclictest22942-21ls07:15:212
1924099528,8cyclictest16101-21apt-get08:10:112
1924099527,7cyclictest21218-21apt-get10:35:132
1924099526,14cyclictest19269-21apt-get07:10:112
139391520,1ptp4l391rcuc/307:50:403
1924099519,18cyclictest26995-21awk08:30:202
1924099518,13cyclictest30847-21ssh09:45:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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