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2022-07-03 - 05:30

x86 Intel Atom E3950 @1600 MHz, Linux 5.6.19-rt12 (Profile)

Latency plot of system in rack #9, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rack9slot2 (updated Sun Jul 03, 2022 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44342343310,22sleep30-21swapper/33
58582248183,52sleep10-21swapper/11
59892228191,24sleep00-21swapper/00
58292227190,25sleep20-21swapper/22
210262590,4sleep30-21swapper/33
632199480,27cyclictest32488-21grep3
632199461,22cyclictest18152-21sed3
632199460,21cyclictest18603-21cat3
632199460,21cyclictest17356-21latency_hist3
40902450,2sleep30-21swapper/33
51062430,4sleep35108-21grep3
632199420,28cyclictest19524-21awk3
632199410,23cyclictest6615-21sed3
632199410,22cyclictest14601-21sed3
632199410,20cyclictest7868-21sed3
632199408,18cyclictest25580-21tr3
632199391,22cyclictest21803-21chrt3
632199390,21cyclictest8689-21df_inode3
632199381,21cyclictest8739-21taskset3
632199380,23cyclictest18241-21awk3
632199380,22cyclictest9481-21sed3
632199380,22cyclictest31327-21awk3
632199380,22cyclictest31327-21awk3
632199380,22cyclictest11982-21taskset3
632199380,21cyclictest25956-21find3
632199371,23cyclictest5837-21awk3
632199370,22cyclictest24617-21cat3
632199361,21cyclictest19465-21awk3
632199340,30cyclictest27779-21sed3
632199330,19cyclictest7088-21irqstats3
6321993215,14cyclictest5125-21expr3
632199320,18cyclictest0-21swapper/33
632199320,18cyclictest0-21swapper/33
632199320,17cyclictest0-21swapper/33
6321993113,15cyclictest22516-21expr3
632199310,17cyclictest0-21swapper/33
632199310,17cyclictest0-21swapper/33
632199310,17cyclictest0-21swapper/33
6321993013,14cyclictest19117-21awk3
6321993010,17cyclictest505-21dbus-daemon3
632199300,17cyclictest0-21swapper/33
632199300,16cyclictest0-21swapper/33
632199290,16cyclictest0-21swapper/33
632199290,16cyclictest0-21swapper/33
632199290,16cyclictest0-21swapper/33
632199290,16cyclictest0-21swapper/33
632199281,24cyclictest9569-21aten2_r9power_e3
632199281,24cyclictest3315-21munin-run3
632199281,24cyclictest28334-21cpuspeed_turbos3
632199281,24cyclictest2158-21wget3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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