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2025-08-31 - 07:35
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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 50 highest latencies:
System rackeslot8.osadl.org (updated Sun Aug 31, 2025 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2061930992925,2cyclictest0-21swapper/200:00:002
2061930992825,2cyclictest2070517-21grep20:00:012
2061927992823,3cyclictest3818356-21systemd-journal23:55:001
2061927992724,2cyclictest761-21cups-browsed20:10:011
2061934992420,2cyclictest2145608-21sleep21:09:593
2061922992421,2cyclictest3004-21cron19:20:000
2061930992320,2cyclictest2477196-21sh00:34:592
2061922992319,2cyclictest3571628-21kworker/u8:3-ext4-rsv-conversion19:45:000
2061927992218,3cyclictest2102542-21systemd-run20:35:011
2061922992219,2cyclictest761-21cups-browsed00:39:590
2061934992118,1cyclictest0-21swapper/320:45:003
2061927992117,2cyclictest2068556-21latency_hist19:45:001
2061927992112,8cyclictest0-21swapper/119:15:001
2061922992118,2cyclictest0-21swapper/022:45:000
2061922992117,3cyclictest2071134-21cron20:05:010
2061930992017,2cyclictest0-21swapper/221:20:012
2061927992017,2cyclictest2291190-21sendmail22:40:001
2061922992017,2cyclictest2404032-21latency_hist23:50:010
2061922992013,6cyclictest0-21swapper/000:30:000
2061934991916,1cyclictest0-21swapper/320:55:013
2061930991917,1cyclictest2218188-21cron21:55:012
2061930991916,2cyclictest522-21in:imuxsock19:55:002
2061930991916,2cyclictest2062482-21munin-plugin-st19:15:002
206192799198,9cyclictest3818356-21systemd-journal19:55:001
2061927991916,2cyclictest1-21systemd23:05:011
2061922991916,2cyclictest2067210-21latency_hist19:35:000
2061922991916,2cyclictest1-21systemd23:44:210
2061922991915,3cyclictest522-21in:imuxsock22:59:590
2061934991815,1cyclictest0-21swapper/322:10:003
2061934991815,1cyclictest0-21swapper/300:10:003
2061930991816,1cyclictest2468921-21idleruntime-cro00:30:002
2061930991816,1cyclictest0-21swapper/223:05:012
2061930991816,1cyclictest0-21swapper/200:20:012
2061930991814,2cyclictest2218626-21cpuspeed_turbos21:55:132
2061930991813,3cyclictest0-21swapper/219:30:012
2061930991813,3cyclictest0-21swapper/219:30:012
2061927991816,1cyclictest2193868-21sendmail21:40:001
2061927991815,2cyclictest2485279-21awk00:39:591
2061927991815,2cyclictest2332282-21gltestperf23:05:141
2061927991815,2cyclictest2243369-21runrttasks22:10:151
2061927991814,3cyclictest2393240-21ntp_kernel_pll_23:40:211
2061922991815,2cyclictest500-21avahi-daemon00:15:000
2061922991815,2cyclictest2353112-21sshd23:15:210
2061922991815,2cyclictest2331515-21latency_hist23:05:010
2061922991815,2cyclictest2267669-21irqcore22:25:140
2061922991815,2cyclictest2077913-21cron20:15:010
2061922991815,2cyclictest0-21swapper/022:20:010
2061922991815,2cyclictest0-21swapper/021:40:000
2061922991815,2cyclictest0-21swapper/021:20:010
2061934991714,1cyclictest0-21swapper/323:40:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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