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2026-08-01 - 04:33
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Sat Aug 01, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3819992321,1cyclictest0-21swapper/220:15:182
381999230,5cyclictest0-21swapper/200:01:042
381999230,18cyclictest0-21swapper/222:20:162
381799230,5cyclictest0-21swapper/022:54:140
381799230,5cyclictest0-21swapper/022:27:220
3817992214,4cyclictest0-21swapper/022:30:440
381999210,19cyclictest25292-21grep21:40:152
381899214,16cyclictest0-21swapper/123:26:421
381999200,19cyclictest0-21swapper/220:06:022
381899202,1cyclictest0-21swapper/119:50:231
381999193,15cyclictest0-21swapper/222:52:552
3819991914,3cyclictest27142-21nfsd420:45:192
381999190,1cyclictest0-21swapper/221:29:012
381999190,17cyclictest2426-21proc_pri21:55:202
3818991914,4cyclictest843-21systemd-network22:24:431
381899190,18cyclictest30847-21cut21:50:171
3817991919,0cyclictest0-21swapper/023:12:360
3817991916,2cyclictest5343-21latency23:55:180
3817991911,4cyclictest0-21swapper/022:44:200
381999182,15cyclictest116402sleep219:20:362
3819991816,1cyclictest24267-21switchtime23:30:222
3819991815,2cyclictest428-21mailstats20:55:212
3819991815,2cyclictest0-21swapper/222:30:172
3819991813,4cyclictest0-21swapper/222:35:152
381999181,16cyclictest5601-21lxd19:50:512
381999181,16cyclictest14355-21taskset22:15:512
381999180,17cyclictest15698-21awk23:15:182
381899182,1cyclictest10381-21processes20:15:201
3818991815,2cyclictest8804-21chrt22:06:381
3818991814,3cyclictest3351-21lxd20:50:501
3818991814,3cyclictest30374-21sshd23:43:401
3818991813,2cyclictest6300-21tr20:10:201
381899181,16cyclictest13834-21ps22:15:201
381799182,15cyclictest14550-21snapd21:02:520
381799182,15cyclictest0-21swapper/021:43:020
3817991815,2cyclictest12507-21plymouth00:10:170
3817991815,1cyclictest0-21swapper/023:22:020
3817991814,3cyclictest7261-21missed_timers20:10:230
381799181,16cyclictest14896-21nfsd421:20:180
381799180,17cyclictest1079-21cups-browsed20:15:210
381799180,16cyclictest3450-21gsd-color20:20:090
3819991715,1cyclictest2291-21latency23:50:172
3819991715,1cyclictest2291-21latency23:50:162
3819991715,1cyclictest0-21swapper/223:10:132
3819991715,1cyclictest0-21swapper/222:00:152
3819991714,2cyclictest6244-21fschecks_time23:00:162
3819991714,2cyclictest30765-21nvmesmart_nvme022:45:172
3819991714,2cyclictest3053-21systemd-logind23:48:522
3819991714,2cyclictest3053-21systemd-logind23:22:512
3819991714,2cyclictest29262-21fschecks_time20:50:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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