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2024-07-27 - 03:34
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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 Fri Jul 26, 2024 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15342298265,21sleep20-21swapper/207:05:022
32252294227,21sleep10-21swapper/107:06:261
33192267233,21sleep30-21swapper/307:07:403
15432262212,38sleep00-21swapper/007:05:090
217302600,1sleep20-21swapper/211:41:412
174442580,0sleep30-21swapper/309:26:593
153202580,1sleep2271rcuc/210:12:152
39762550,0sleep30-21swapper/310:27:583
193702550,0sleep10-21swapper/110:15:181
219752520,0sleep20-21swapper/210:40:182
73752190,0sleep30-21swapper/309:43:243
182742160,0sleep00-21swapper/011:40:110
31462120,0sleep10-21swapper/112:10:181
360599109,1cyclictest22-21ksoftirqd/110:45:021
360599103,5cyclictest22-21ksoftirqd/110:26:301
166982100,0sleep10-21swapper/111:39:071
4170290,0sleep20-21swapper/210:28:082
36059994,4cyclictest13972-21ssh09:25:111
36059994,3cyclictest19982-21systemd-journal09:01:101
36059993,4cyclictest22-21ksoftirqd/112:00:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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