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2024-03-02 - 07:45
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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 rackaslot8.osadl.org (updated Sat Mar 02, 2024 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
99842272223,38sleep10-21swapper/119:08:591
98652268234,21sleep30-21swapper/319:07:363
97852268236,20sleep00-21swapper/019:06:330
100152263230,21sleep20-21swapper/219:09:242
120992610,0sleep10-21swapper/100:00:301
268472600,0sleep20-21swapper/220:55:222
206642530,0sleep20-21swapper/200:07:392
33652430,0sleep10-21swapper/121:10:551
20092150,1sleep00-21swapper/021:10:250
147052150,1sleep114702-21systemctl21:20:001
1016799118,2cyclictest12-21ksoftirqd/022:00:010
1016799118,2cyclictest12-21ksoftirqd/021:40:010
10167991110,1cyclictest12-21ksoftirqd/022:05:000
10167991110,1cyclictest12-21ksoftirqd/021:19:590
1016799110,2cyclictest0-21swapper/019:50:200
1016799110,1cyclictest12-21ksoftirqd/022:30:020
1016799110,1cyclictest12-21ksoftirqd/022:30:020
88272100,0sleep20-21swapper/223:35:162
1016799109,1cyclictest12-21ksoftirqd/023:00:010
1016799109,1cyclictest12-21ksoftirqd/022:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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