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2025-12-16 - 13:21
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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 Tue Dec 16, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65342315257,47sleep20-21swapper/219:07:102
66632274245,19sleep10-21swapper/119:08:491
65252270240,20sleep00-21swapper/019:07:030
64152251225,17sleep30-21swapper/319:05:543
58852630,0sleep10-21swapper/121:27:101
92512620,1sleep09128-40mandb00:00:000
46482580,0sleep20-21swapper/221:25:152
4972150,0sleep30-21swapper/320:05:173
139092150,0sleep30-21swapper/300:10:133
77192130,0sleep30-21swapper/322:45:013
686799110,2cyclictest4597-21cut21:25:153
686799110,2cyclictest3242-21apt-get22:35:023
686799110,1cyclictest20792-21munin-plugin-st19:40:003
686799103,6cyclictest275-21systemd-journal22:19:473
686799102,3cyclictest16397-21cut21:50:203
686799102,1cyclictest18559-21cron19:35:003
686799101,1cyclictest275-21systemd-journal23:57:203
686799101,1cyclictest13417-21apt-get20:35:123
686799100,9cyclictest720-21/usr/sbin/munin22:30:183
686799100,9cyclictest7074-21awk19:10:133
686799100,3cyclictest23081-21cron23:20:003
686799100,2cyclictest2635-21irqstats21:20:183
686799100,2cyclictest12096-21fschecks_time00:05:153
68679992,2cyclictest658-21snmpd22:20:193
68679992,2cyclictest658-21snmpd21:42:123
68679992,2cyclictest3075-21sed23:45:153
68679992,2cyclictest30128-21cut20:00:143
68679992,2cyclictest12638-21forks22:55:163
68679991,2cyclictest6952-21gltestperf21:30:153
68679991,1cyclictest1890-21sshd23:42:253
68679991,1cyclictest10007-21apt-get22:50:123
68679991,1cyclictest0-21swapper/322:05:013
68679990,3cyclictest32402-21unixbench_multi22:25:203
68679990,3cyclictest29284-21latency_hist21:10:003
68679990,3cyclictest2545-21head20:10:163
68679990,3cyclictest19782-21grep23:10:163
68679990,3cyclictest14880-21/usr/sbin/munin23:00:143
68679990,3cyclictest12850-21/usr/sbin/munin19:20:133
68679990,2cyclictest6547-21sh23:55:003
68679990,2cyclictest504-21dbus-daemon21:15:003
68679990,2cyclictest504-21dbus-daemon20:25:003
68679990,2cyclictest32286-21apt23:40:003
68679990,2cyclictest275-21systemd-journal21:00:003
68679990,2cyclictest275-21systemd-journal19:49:553
68679990,2cyclictest275-21systemd-journal00:27:223
68679990,2cyclictest19109-21fw_packets00:20:163
68679990,2cyclictest1654-21cron21:20:003
68679990,2cyclictest13164-21idleruntime-cro20:35:003
68679990,2cyclictest11038-21ps19:15:193
68679990,2cyclictest10933-21apt20:30:003
68679990,2cyclictest10598-21apt21:40:013
68679990,1cyclictest26802-21apt21:05:003
68679990,1cyclictest25559-21apt-get00:35:123
68679990,1cyclictest21043-21/usr/sbin/munin19:40:143
68679990,1cyclictest16956-21hddtemp_smartct00:15:153
68589994,3cyclictest501-21in:imuxsock21:20:001
68679982,1cyclictest9919-21tail00:00:173
68679981,2cyclictest4455-21dpkg20:15:023
68679981,2cyclictest19715-21/usr/sbin/munin20:45:203
68679980,3cyclictest27702-21find19:55:133
68679980,3cyclictest25768-21find23:25:003
68679980,3cyclictest24217-21basename22:10:143
68679980,3cyclictest23550-21cstates00:30:113
68679980,3cyclictest22066-21/usr/sbin/munin22:05:133
68679980,3cyclictest13675-21grep21:45:153
68679980,2cyclictest8153-21df22:45:153
68679980,2cyclictest28872-21sed23:30:153
68679980,2cyclictest275-21systemd-journal19:25:503
68679980,2cyclictest25481-21find19:50:143
68679980,2cyclictest23870-21cut23:20:133
68679980,2cyclictest20951-21cut20:50:143
68679980,2cyclictest17528-21find21:55:133
68679980,2cyclictest17528-21find21:55:133
68679980,2cyclictest17273-21sed23:05:153
68679980,2cyclictest16852-21smart_sda20:40:193
68629982,3cyclictest10609-21munin-run21:40:012
68569987,1cyclictest12-21ksoftirqd/021:40:010
68569983,3cyclictest6462-21sendmail20:20:010
68629972,3cyclictest275-21systemd-journal23:59:072
68629972,3cyclictest275-21systemd-journal22:30:012
68629972,3cyclictest275-21systemd-journal00:15:022
68589974,2cyclictest275-21systemd-journal19:15:201
68589973,3cyclictest658-21snmpd20:27:091
68589973,3cyclictest19972-21systemctl19:35:191
68589971,3cyclictest24578-21systemctl21:00:011
68569976,1cyclictest12-21ksoftirqd/022:00:020
68569972,3cyclictest275-21systemd-journal22:20:010
68569972,3cyclictest27521-21munin-run00:39:590
68569970,0cyclictest0-21swapper/021:25:120
68629966,0cyclictest0-21swapper/219:15:202
68629963,2cyclictest658-21snmpd22:15:072
68629963,2cyclictest658-21snmpd21:56:482
68629963,2cyclictest658-21snmpd21:56:482
68629963,2cyclictest658-21snmpd21:51:272
68629963,2cyclictest658-21snmpd21:10:082
68629963,2cyclictest658-21snmpd19:50:122
68629963,2cyclictest275-21systemd-journal20:10:012
68629963,2cyclictest25397-21apt-key23:25:002
68629963,2cyclictest15393-21basename20:40:002
68629962,3cyclictest658-21snmpd23:43:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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