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2024-07-27 - 04:08
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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 rack9slot2.osadl.org (updated Sat Jul 27, 2024 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66702287249,25sleep30-21swapper/33
66832254187,26sleep10-21swapper/11
64362251179,23sleep20-21swapper/22
65602230192,25sleep00-21swapper/00
205221440,1sleep00-21swapper/00
87532550,2sleep00-21swapper/00
243992430,1sleep20-21swapper/22
7152400,1sleep30-21swapper/33
114012390,2sleep20-21swapper/22
693099340,3cyclictest9536-21gpgv2
6921993413,4cyclictest26474-21basename0
6921993413,17cyclictest11264-21sendmail0
6930993216,13cyclictest25967-21diskstats2
693099321,28cyclictest11249-21/usr/sbin/munin2
693099320,20cyclictest0-21swapper/22
6921993214,16cyclictest23269-21sed0
6921993212,4cyclictest20688-21sed0
693099312,24cyclictest23935-21apt-get2
693099310,3cyclictest12496-21diskstats2
693099310,3cyclictest12496-21diskstats2
693099309,19cyclictest27805-21latency_hist2
693099309,18cyclictest6663-21cat2
6930993014,14cyclictest22001-21/usr/sbin/munin2
693099300,2cyclictest21391-21sed2
693099300,2cyclictest15933-21apt-get2
6921993012,3cyclictest9048-21expr0
6921993011,4cyclictest27067-21cat0
6921993010,4cyclictest623-21grep0
6921993010,4cyclictest15863-21wc0
6921993010,3cyclictest7339-21grep0
693099299,17cyclictest505-21dbus-daemon2
693099299,17cyclictest4164-21memory2
693099299,17cyclictest0-21swapper/22
693099298,18cyclictest7724-21munin-run2
693099297,19cyclictest21278-21unixbench_singl2
693099296,20cyclictest14100-21hostname2
693099294,22cyclictest28-21ksoftirqd/22
693099293,23cyclictest11830-21latency_hist2
693099292,21cyclictest32417-21apt-get2
6930992914,13cyclictest28408-21/usr/sbin/munin2
6930992914,13cyclictest28408-21/usr/sbin/munin2
6930992911,15cyclictest14411-21cat2
6930992910,17cyclictest5382-21cut2
693099290,3cyclictest16010-21apt-get2
693099290,3cyclictest14354-21/usr/sbin/munin2
693099290,3cyclictest12174-21irqstats2
693099290,2cyclictest4623-21irqstats2
693099290,26cyclictest32305-21date2
6921992912,3cyclictest665-21runrttasks0
6921992912,2cyclictest28661-21irqstats0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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