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2025-12-24 - 09:23
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Wed Dec 24, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
115672288261,18sleep20-21swapper/219:06:302
118182269238,20sleep00-21swapper/019:09:260
116492268243,17sleep10-21swapper/119:07:181
115752257229,18sleep30-21swapper/319:06:343
295542570,0sleep20-21swapper/200:35:112
160142200,0sleep10-21swapper/121:40:111
1198399121,9cyclictest275-21systemd-journal21:15:013
1198399121,9cyclictest23322-21apt-get20:45:113
1198399120,3cyclictest4182-21sshd23:38:003
1198399112,8cyclictest504-21dbus-daemon20:10:013
1198399112,7cyclictest275-21systemd-journal19:12:333
1198399112,5cyclictest11963-21taskset22:41:383
1198399110,9cyclictest275-21systemd-journal19:40:013
1198399110,7cyclictest20479-21wc23:00:243
1198399110,0cyclictest15708-21apt-get21:40:113
1198399102,7cyclictest9316-21dpkg20:15:133
1198399102,7cyclictest22911-21gltestperf21:55:153
1198399102,4cyclictest663-21runrttasks22:10:413
1198399101,5cyclictest26657-21chrt00:26:383
1198399100,9cyclictest27868-21apt23:20:013
1198399100,9cyclictest22516-21readlink00:19:593
1198399100,8cyclictest275-21systemd-journal22:57:443
1198399100,8cyclictest13259-40logrotate00:00:003
1198399100,6cyclictest18949-21chrt19:21:443
1198399100,6cyclictest18949-21chrt19:21:443
1198399100,1cyclictest3615-21apt-get22:25:123
1198399100,1cyclictest31293-21ntp_kernel_pll_23:25:163
119839992,6cyclictest7504-21fschecks_count20:10:183
119839992,6cyclictest658-21snmpd22:20:213
119839992,6cyclictest658-21snmpd22:15:353
119839992,6cyclictest658-21snmpd00:13:503
119839991,7cyclictest30101-21cat00:35:143
119839991,7cyclictest275-21systemd-journal23:56:453
119839991,7cyclictest24870-21apt-get22:00:013
119839991,7cyclictest0-21swapper/320:55:013
119839991,1cyclictest18548-21apt-get20:35:123
119839991,0cyclictest14094-21apt-get20:25:123
119839990,8cyclictest8753-21sh21:25:013
119839990,8cyclictest6593-21cron23:45:003
119839990,8cyclictest504-21dbus-daemon21:55:003
119839990,8cyclictest4612-21apt20:05:013
119839990,8cyclictest23674-21sh19:35:013
119839990,8cyclictest22767-21munin-run20:45:003
119839990,8cyclictest13215-21idleruntime-cro21:35:013
119839990,8cyclictest10013-21turbostat.cron22:40:013
119839990,2cyclictest9686-21cat21:25:153
119839990,1cyclictest28006-21missed_timers00:30:153
119839990,1cyclictest246622chrt00:24:143
119839990,1cyclictest24062-21diskstats23:10:163
119839990,1cyclictest0-21swapper/321:15:193
119839990,1cyclictest0-21swapper/320:50:123
119839990,0cyclictest0-21swapper/320:20:133
119839982,5cyclictest1547-21grep21:05:213
119839981,6cyclictest30294-21/usr/sbin/munin21:00:173
119839981,6cyclictest17278-21ntpq20:30:183
119839981,1cyclictest14751-21apt-get22:50:123
119839981,0cyclictest28406-21apt-get19:45:173
119839980,7cyclictest7808-21ntp_states23:45:193
119839980,7cyclictest6692-21ls22:30:173
119839980,7cyclictest21765-21cstates23:05:133
119839980,7cyclictest17289-21sensors00:05:203
119839980,7cyclictest14583-21awk21:35:183
119839980,3cyclictest27326-21cstates22:05:153
119839980,3cyclictest26179-21apt-get19:40:103
119839980,3cyclictest19484-21basename19:25:133
119839980,3cyclictest10396-21ls23:50:193
119839980,2cyclictest18409-21grep21:45:143
119839980,2cyclictest14635-21ntp_states19:15:023
119839980,1cyclictest368-21apt-get19:55:133
119839980,1cyclictest0-21swapper/319:50:153
119839980,0cyclictest0-21swapper/323:30:133
119839980,0cyclictest0-21swapper/323:20:123
119839980,0cyclictest0-21swapper/322:45:133
119789985,2cyclictest28-21ksoftirqd/222:55:012
119789983,3cyclictest275-21systemd-journal20:30:002
119789981,4cyclictest29179-21ls00:35:002
119719983,3cyclictest275-21systemd-journal21:06:280
119719980,7cyclictest31939-21df22:15:140
119789976,1cyclictest28-21ksoftirqd/222:30:012
119789973,3cyclictest275-21systemd-journal20:43:032
119789973,3cyclictest16762-21cat00:05:162
119789970,2cyclictest275-21systemd-journal23:33:242
119759974,2cyclictest275-21systemd-journal20:30:331
119759972,3cyclictest275-21systemd-journal19:55:001
119759971,3cyclictest2150-21munin-run23:35:001
119759971,3cyclictest21200-21idleruntime-cro23:05:001
119719976,1cyclictest4877-21apt-get20:05:120
119719974,2cyclictest501-21in:imuxsock21:30:000
119719973,3cyclictest658-21snmpd20:25:390
119719973,3cyclictest275-21systemd-journal22:09:570
119719971,4cyclictest275-21systemd-journal20:50:120
119789963,2cyclictest663-21runrttasks19:20:182
119789963,2cyclictest663-21runrttasks19:20:182
119789963,2cyclictest6609-21perf23:45:002
119789963,2cyclictest658-21snmpd22:10:202
119789963,2cyclictest658-21snmpd21:05:462
119789963,2cyclictest504-21dbus-daemon23:08:442
119789963,2cyclictest275-21systemd-journal22:22:532
119789963,2cyclictest275-21systemd-journal20:47:242
119789962,3cyclictest658-21snmpd22:35:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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