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2026-08-11 - 05:33
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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 20 highest latencies:
System rackeslot2.osadl.org (updated Tue Aug 11, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
238104221030,1sleep02381045-21missed_timers23:00:330
25007332940,1sleep10-21swapper/100:23:221
2064821992623,2cyclictest2486828-21grep00:15:021
2064821992623,2cyclictest2486828-21grep00:15:021
2064820992414,6cyclictest2275658-21kthreadcore21:50:320
2064820992413,6cyclictest0-21swapper/022:00:010
2064821992219,2cyclictest2412824-21turbostat.cron23:25:011
2064820992219,2cyclictest2109646-21apt-key19:45:010
2064820992211,6cyclictest0-21swapper/022:55:370
1157598220,6rtkit-daemon1306-21mta-sts-daemon23:44:050
2064821992118,2cyclictest2405644-21/usr/sbin/munin23:20:021
2064821992114,3cyclictest2304146-21kthreadcore22:10:301
2064821992111,4cyclictest0-21swapper/100:15:271
2064820992118,2cyclictest838-21gmain21:30:000
2064820992118,2cyclictest2331395-21sh22:30:020
2064820992118,2cyclictest2091347-21systemd-run19:30:010
2064820992110,7cyclictest0-21swapper/021:20:180
206482099210,4cyclictest2091616-21/usr/sbin/munin19:30:270
1157598210,2rtkit-daemon11574-21rtkit-daemon19:51:291
2064822992017,1cyclictest0-21swapper/222:40:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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