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2024-04-20 - 15:06
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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 Sat Apr 20, 2024 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193682308241,57sleep30-21swapper/33
193682308241,57sleep30-21swapper/33
208912299262,24sleep00-21swapper/00
208912299262,24sleep00-21swapper/00
210132275239,23sleep10-21swapper/11
210132275239,23sleep10-21swapper/11
208582262224,25sleep20-21swapper/22
208582262224,25sleep20-21swapper/22
2127399261254,4cyclictest25770-21munin-run1
2127199178173,3cyclictest25787-21sendmail0
2128199172166,4cyclictest25795-21awk3
2127799125111,12cyclictest25786-21perf2
95092690,2sleep30-21swapper/33
287972610,3sleep3341rcuc/33
123582600,2sleep20-21swapper/22
2127799480,31cyclictest28861-21cut2
2127799457,28cyclictest3609-21pmu-power2
2127799440,33cyclictest23460-21ntpq2
2127799431,28cyclictest12129-21bash2
2127799431,28cyclictest12129-21bash2
2127799430,27cyclictest18946-21grep2
2127799421,27cyclictest14764-21/usr/sbin/munin2
2127799421,24cyclictest8336-21sed2
2127799420,27cyclictest31921-21ntpq2
2127799420,26cyclictest8691-21dpkg2
2127799420,26cyclictest14785-21http2
2127799420,26cyclictest14785-21http2
117132420,1sleep00-21swapper/00
117132420,1sleep00-21swapper/00
2127799411,25cyclictest29758-21sed2
2127799410,26cyclictest29529-21awk2
2127799410,26cyclictest17601-21open_inodes2
2127799410,25cyclictest1559-21ntpq2
2127799402,29cyclictest21917-21ntpq2
2127799401,25cyclictest30885-21/usr/sbin/munin2
2127799400,25cyclictest16103-21dpkg2
2127799400,24cyclictest27162-21if_enp2s02
2127799400,23cyclictest27076-21ps2
2127799400,23cyclictest11465-21memory2
2127799391,35cyclictest20319-21aten2.4-expect2
2127799390,26cyclictest18368-21chrt2
2127799390,25cyclictest30282-21sed2
2127799390,25cyclictest30282-21sed2
284122380,3sleep3341rcuc/33
2127799381,23cyclictest28547-21chrt2
2127799380,23cyclictest5569-21ntpq2
2127799380,23cyclictest3622-21cut2
2127799380,23cyclictest25680-21ntpq2
2127799380,23cyclictest11672-21ntpq2
2127799380,21cyclictest15822-21find2
2127799371,23cyclictest8212-21sendmail2
2127799371,20cyclictest0-21swapper/22
2127799371,20cyclictest0-21swapper/22
2127799370,23cyclictest31922-21ps2
2127799370,23cyclictest23921-21ntpq2
2127799370,22cyclictest1319-21ntpq2
2127799361,22cyclictest19279-21if_enp2s02
2127799360,23cyclictest26485-21chrt2
2127799360,21cyclictest2201-21apt-get2
21277993513,20cyclictest14632-21date2
2127799350,21cyclictest5605-21ps2
2127799350,19cyclictest0-21swapper/22
21277993414,18cyclictest2359-21sh2
2127799341,23cyclictest23315-21/usr/sbin/munin2
2127799340,31cyclictest4375-21latency_hist2
2127799331,18cyclictest0-21swapper/22
2127799330,31cyclictest0-21swapper/22
2127799328,21cyclictest22355-21sed2
21277993210,19cyclictest7261-21if_enp2s02
21277993210,19cyclictest25285-21if_enp2s02
2127799320,2cyclictest0-21swapper/22
2127799319,20cyclictest6196-21seq2
2127799319,19cyclictest17144-21cut2
2127799319,19cyclictest13428-21expr2
2127799310,28cyclictest32613-21if_enp3s02
2127799310,28cyclictest19999-21munin-run2
2127799310,1cyclictest0-21swapper/22
2127799310,1cyclictest0-21swapper/22
182312310,10sleep121-21ksoftirqd/11
2127799307,20cyclictest10022-21cat2
2127799302,22cyclictest20799-21apt-get2
21277993010,18cyclictest25647-21switchtime2
2127799298,18cyclictest19246-21cpuspeed2
2127799290,26cyclictest6459-21ntp_kernel_pll_2
2127799290,26cyclictest28482-21forks2
2127799290,26cyclictest21639-21/usr/sbin/munin2
2127799290,26cyclictest15022-21apt2
2127799281,24cyclictest31928-21/usr/sbin/munin2
2127199270,25cyclictest23253-21kworker/0:20
89012240,2sleep00-21swapper/00
21281992315,4cyclictest505-21dbus-daemon3
2127199231,18cyclictest0-21swapper/00
261282220,1sleep00-21swapper/00
21281992215,4cyclictest30475-21grep3
21281992215,4cyclictest30475-21grep3
2127199222,3cyclictest9-21ksoftirqd/00
2127199222,3cyclictest9-21ksoftirqd/00
21271992217,3cyclictest9-21ksoftirqd/00
106662220,2sleep10-21swapper/11
21281992115,3cyclictest19144-21aten2.4-expect3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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