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2024-07-25 - 06:27
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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 20 highest latencies:
System rackeslot3.osadl.org (updated Thu Jul 25, 2024 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1591932996349,2cyclictest0-21swapper/220:14:552
159193299630,62cyclictest0-21swapper/223:47:262
1591932996246,15cyclictest1694168-21kworker/2:022:35:152
1591932996141,19cyclictest1592013-21kworker/2:119:15:002
1591932996141,18cyclictest1200449-1kworker/2:0H23:39:312
1591932996045,14cyclictest1200449-1kworker/2:0H00:39:502
1591932996042,17cyclictest1616165-21kworker/2:220:40:012
1591932995956,2cyclictest0-21swapper/223:17:372
1591932995943,15cyclictest1752164-21kworker/2:023:55:132
1591932995943,15cyclictest1661145-21kworker/2:121:55:172
1591932995943,15cyclictest1661145-21kworker/2:121:55:172
1591932995942,16cyclictest1661145-21kworker/2:122:10:002
1591932995941,17cyclictest1661145-21kworker/2:121:50:162
1591932995939,18cyclictest1698724-21kworker/2:123:00:122
1591932995843,14cyclictest1661145-21kworker/2:122:15:012
1591932995843,14cyclictest1614362-21kworker/2:120:29:552
1591932995842,15cyclictest1661145-21kworker/2:122:01:572
1591932995842,15cyclictest1627216-21kworker/2:021:01:562
1591933995752,3cyclictest233-1kworker/3:1H20:00:133
1591932995742,14cyclictest1758109-21kworker/2:200:19:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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