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2025-12-27 - 01:52
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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 rack9slot2.osadl.org (updated Fri Dec 26, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
80292275238,24sleep00-21swapper/00
79342268192,41sleep20-21swapper/22
77922232169,51sleep30-21swapper/33
77202229192,25sleep10-21swapper/11
2378421830,4sleep0820199cyclictest0
94432930,5sleep0517-21dbus-daemon0
207242660,1sleep20-21swapper/22
128272550,2sleep30-21swapper/33
128272550,2sleep30-21swapper/33
44592500,3sleep00-21swapper/00
40462500,2sleep00-21swapper/00
129942430,1sleep012997-21awk0
129942430,1sleep012997-21awk0
821199310,29cyclictest10049-21kworker/3:13
56172290,3sleep30-21swapper/33
821199288,18cyclictest0-21swapper/33
821199278,3cyclictest0-21swapper/33
286512270,2sleep10-21swapper/11
821199256,17cyclictest520-21rs:main3
821199256,17cyclictest520-21rs:main3
821199256,17cyclictest35-21ksoftirqd/33
21052250,2sleep30-21swapper/33
821199245,3cyclictest340-21systemd-journal3
821199245,17cyclictest24494-21sendmail-mta3
821199245,17cyclictest10019-21sendmail-mta3
821199241,2cyclictest111rcu_preempt3
821199235,16cyclictest14638-1kworker/3:1H3
821199234,2cyclictest0-21swapper/33
821199234,17cyclictest8223-21cat3
821199234,17cyclictest5245-21sendmail-mta3
821199234,17cyclictest520-21rs:main3
821199234,17cyclictest29844-21sendmail-mta3
821199234,17cyclictest25770-21sendmail-mta3
821199234,17cyclictest14684-21sendmail-mta3
821199233,17cyclictest5906-21sendmail-mta3
821199231,19cyclictest515-21avahi-daemon3
821199230,3cyclictest111rcu_preempt3
8201992318,3cyclictest9-21ksoftirqd/00
821199228,11cyclictest0-21swapper/33
821199223,17cyclictest9410-21sendmail-mta3
821199223,17cyclictest27371-21sendmail-mta3
821199223,17cyclictest1507-21sendmail-mta3
821199223,17cyclictest12816-21sendmail-mta3
821199221,4cyclictest520-21rs:main3
821199221,3cyclictest30030-21memory3
821199221,3cyclictest30030-21memory3
821199221,18cyclictest340-21systemd-journal3
821199220,5cyclictest0-21swapper/33
821199220,4cyclictest14734-1kworker/3:0H3
8201992215,5cyclictest22586-21sh0
821199213,3cyclictest520-21rs:main3
821199212,2cyclictest35-21ksoftirqd/33
8211992118,2cyclictest0-21swapper/33
8211992116,3cyclictest9574-21sh3
8211992116,3cyclictest13354-21cpu3
8211992116,3cyclictest13354-21cpu3
821199211,3cyclictest2223-21apt-get3
821199211,3cyclictest14638-1kworker/3:1H3
821199211,18cyclictest0-21swapper/33
821199210,4cyclictest22612-21plymouth3
821199210,18cyclictest12529-21apt-config3
8207992115,4cyclictest1693-21memory2
8207992115,3cyclictest28441-21kernelversion2
8207992114,4cyclictest22491-21df2
8201992116,3cyclictest22461-21missed_timers0
8201992115,4cyclictest18760-21apt-get0
8211992015,3cyclictest9818-21apt-get3
8211992014,4cyclictest15078-21seq3
8211992013,4cyclictest18010-21expr3
821199201,17cyclictest16571-21munin-run3
821199201,17cyclictest0-21swapper/33
821199200,3cyclictest32082-21wc3
821199200,2cyclictest30782-21ntp_states3
821199200,2cyclictest16744-21aten2_r9power_e3
8207992017,2cyclictest0-21swapper/22
8207992015,3cyclictest15122-21missed_timers2
8207992015,3cyclictest11606-21timerandwakeup2
8207992014,4cyclictest31558-21seq2
8207992014,4cyclictest2528-21memory2
8207992014,4cyclictest20545-21sh2
8207992014,4cyclictest19663-21awk2
8207992013,4cyclictest340-21systemd-journal2
820399205,3cyclictest21-21ksoftirqd/11
8203992014,4cyclictest9502-21cat1
8203992014,3cyclictest950-21apt-get1
820399200,3cyclictest340-21systemd-journal1
820399200,3cyclictest340-21systemd-journal1
8201992015,3cyclictest15685-21idleruntime-cro0
8201992014,4cyclictest662-21runrttasks0
8201992014,4cyclictest662-21runrttasks0
8201992014,4cyclictest634-21snmpd0
8201992014,4cyclictest517-21dbus-daemon0
8201992014,4cyclictest18843-21ntpq0
8201992014,3cyclictest4116-21sed0
820199200,9cyclictest260552switchtime0
821199192,16cyclictest0-21swapper/33
821199192,15cyclictest0-21swapper/33
8211991916,2cyclictest0-21swapper/33
8211991915,3cyclictest3375-21perf3
8211991914,3cyclictest6295-21timerwakeupswit3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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