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2026-05-10 - 23:30
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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 rackdslot0.osadl.org (updated Sun May 10, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1054999230,5cyclictest0-21swapper/110:27:511
1055599224,17cyclictest0-21swapper/210:41:452
10545992221,1cyclictest28867-21mii-tool09:35:160
1054599220,21cyclictest0-21swapper/012:10:130
10555992118,2cyclictest3414-21master10:49:382
1055599210,3cyclictest0-21swapper/208:30:102
1055599210,3cyclictest0-21swapper/208:30:102
10549992110,10cyclictest0-21swapper/112:25:101
1054999210,18cyclictest0-21swapper/111:06:111
1054599215,15cyclictest22426-21latency_hist11:20:010
10545992114,4cyclictest0-21swapper/011:50:150
1054599210,17cyclictest946-21fschecks_time12:35:150
10555992014,5cyclictest0-21swapper/209:51:072
10555992014,5cyclictest0-21swapper/209:51:072
1055599200,17cyclictest0-21swapper/211:50:192
10549992017,2cyclictest1103-21ntpd07:50:221
10545992016,3cyclictest0-21swapper/012:31:480
1055599193,15cyclictest17516-21sshd10:10:212
1055599191,3cyclictest24487-21apt07:35:002
1055599191,17cyclictest0-21swapper/211:55:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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