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2025-12-14 - 08:35
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Sun Dec 14, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
158132296242,45sleep00-21swapper/019:08:010
156542296234,50sleep10-21swapper/119:06:051
159342277251,17sleep20-21swapper/219:09:272
156512260232,19sleep30-21swapper/319:06:043
239582680,0sleep20-21swapper/220:35:162
265892550,0sleep20-21swapper/223:05:152
104992180,1sleep30-21swapper/323:40:193
294672140,0sleep00-21swapper/000:25:010
1609499142,8cyclictest23914-21cat20:35:143
1609499140,8cyclictest31324-21grep23:15:153
1609499131,11cyclictest31502-21apt-get22:05:133
1609499131,0cyclictest12423-21apt-get22:35:123
1609499130,9cyclictest32530-21cut00:30:183
1609499130,9cyclictest15101-21sed23:50:193
1609499130,8cyclictest8665-21irqstats22:25:153
1609499130,8cyclictest8501-21gunzip20:00:183
1609499120,8cyclictest28836-21gunzip20:45:213
1609499120,8cyclictest10064-21grep21:15:213
1609499120,7cyclictest13967-21needreboot21:25:173
1609499120,2cyclictest413-21cpuspeed_turbos23:20:113
1609499120,1cyclictest18109-21apt-get21:35:023
1609499120,1cyclictest14050-21apt-get20:15:133
1609499120,1cyclictest14050-21apt-get20:15:133
1609499120,0cyclictest18491-21apt-get00:00:113
1609499112,8cyclictest3296-21cat19:50:173
1609499111,9cyclictest27038-21apt-get21:55:103
1609499110,7cyclictest31725-21find19:40:193
1609499110,7cyclictest2472-21cat22:10:173
1609499110,7cyclictest20689-21/usr/sbin/munin00:05:213
1609499110,7cyclictest19687-21awk20:25:163
1609499110,7cyclictest16564-21if_enp4s023:55:163
1609499110,7cyclictest1573-21which19:45:203
1609499110,6cyclictest1954-21/usr/sbin/munin21:00:163
1609499110,2cyclictest11706-21missed_timers21:20:173
1609499110,1cyclictest29279-21apt-get22:00:123
1609499110,1cyclictest0-21swapper/323:30:153
1609499110,10cyclictest28076-21cron19:35:003
1609499103,6cyclictest3075-21gltestperf23:25:153
1609499102,7cyclictest24122-21sensors_temp00:10:193
1609499101,8cyclictest4177-21cat22:15:153
1609499101,8cyclictest31898-21munin-run20:54:593
1609499100,9cyclictest8971-21cron23:40:003
1609499100,9cyclictest7058-21expr22:20:203
1609499100,9cyclictest6367-21sed19:55:213
1609499100,9cyclictest504-21dbus-daemon22:35:013
1609499100,9cyclictest29352-21turbostat00:25:013
1609499100,9cyclictest24855-21ntp_states19:25:173
1609499100,9cyclictest21158-21gpgv19:20:003
1609499100,9cyclictest15591-21ntpq22:40:203
1609499100,9cyclictest1-21systemd21:06:053
1609499100,9cyclictest0-21swapper/300:35:143
1609499100,8cyclictest30260-21chrt19:39:393
1609499100,8cyclictest275-21systemd-journal23:50:003
1609499100,8cyclictest275-21systemd-journal22:50:003
1609499100,6cyclictest24452-21grep23:00:173
1609499100,3cyclictest25953-21find21:50:193
1609499100,2cyclictest29580-21/usr/sbin/munin00:25:203
1609499100,2cyclictest23092-21sshd22:57:563
1609499100,2cyclictest18080-21chrt20:23:033
1609499100,1cyclictest0-21swapper/323:10:213
1609499100,1cyclictest0-21swapper/320:40:103
1609499100,1cyclictest0-21swapper/320:05:143
1609499100,0cyclictest11831-21apt-get20:10:123
1609499100,0cyclictest0-21swapper/321:45:123
1609499100,0cyclictest0-21swapper/321:40:123
1609499100,0cyclictest0-21swapper/321:30:113
1609499100,0cyclictest0-21swapper/320:55:123
1609499100,0cyclictest0-21swapper/319:10:083
1608899102,1cyclictest0-21swapper/120:35:021
1608399109,1cyclictest12-21ksoftirqd/019:50:000
160949991,7cyclictest20089-21pmu-power22:50:173
160949990,8cyclictest25901-21grep00:15:173
160949990,8cyclictest25849-21apt-config23:05:013
160949990,8cyclictest21332-21hddtemp_smartct20:30:163
160949990,0cyclictest21647-21apt-get19:20:013
160949990,0cyclictest0-21swapper/321:10:113
160889990,6cyclictest25124-21taskset23:00:231
160839997,1cyclictest12-21ksoftirqd/019:40:000
1696280,0sleep01693-21cron20:59:590
160929985,2cyclictest28-21ksoftirqd/222:15:012
160929983,3cyclictest275-21systemd-journal19:21:242
160889985,2cyclictest10877-21apt-get21:20:121
160889983,4cyclictest31896-21idleruntime-cro20:55:001
160889981,5cyclictest27331-21wc23:05:191
160889981,3cyclictest10049-21cat21:15:201
160839986,2cyclictest12-21ksoftirqd/020:00:000
160839983,3cyclictest275-21systemd-journal21:57:310
160929975,2cyclictest28-21ksoftirqd/200:00:012
160929973,3cyclictest3579-21ntpq19:50:192
160929970,1cyclictest13680-21apt-get23:50:112
160889974,2cyclictest4839-21apt-get19:55:111
160889974,2cyclictest22-21ksoftirqd/100:25:121
160889974,2cyclictest21126-21perf19:20:011
160889974,2cyclictest11198-21apt23:45:011
160889973,3cyclictest504-21dbus-daemon23:35:141
160889973,3cyclictest495-21cat20:55:161
160889973,3cyclictest275-21systemd-journal20:05:001
160889973,3cyclictest17879-21latency_hist00:00:011
160889973,3cyclictest0-21swapper/122:15:131
160889973,3cyclictest0-21swapper/121:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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