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2022-01-19 - 08:28

Intel(R) Atom(TM) Processor E3950 @ 1.60GHz, 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 100 highest latencies:
System rack9slot2 (updated Wed Jan 19, 2022 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16832298215,68sleep30-21swapper/33
18272294259,22sleep20-21swapper/22
17452256200,44sleep00-21swapper/00
18812244208,24sleep10-21swapper/11
303721590,1sleep10-21swapper/11
1431921570,3sleep3215499cyclictest3
1431921570,3sleep3215499cyclictest3
128712670,2sleep20-21swapper/22
95412580,1sleep00-21swapper/00
150092510,1sleep20-21swapper/22
150092510,1sleep20-21swapper/22
28732480,3sleep0101rcuc/00
204852310,2sleep30-21swapper/33
215499270,25cyclictest20314-21kworker/3:33
2145992622,2cyclictest201rcuc/11
214599260,6cyclictest21-21ksoftirqd/11
2150992516,6cyclictest10491-21/usr/sbin/munin2
2145992514,2cyclictest21-21ksoftirqd/11
214599246,9cyclictest21-21ksoftirqd/11
2145992421,2cyclictest201rcuc/11
2145992420,2cyclictest201rcuc/11
2154992314,6cyclictest505-21dbus-daemon3
215099234,17cyclictest1901-21sendmail-mta2
215099234,17cyclictest10231-21cat2
215099232,18cyclictest28391-21tr2
2150992310,12cyclictest28-21ksoftirqd/22
214599236,9cyclictest21-21ksoftirqd/11
2145992319,2cyclictest201rcuc/11
2145992318,3cyclictest201rcuc/11
214599231,6cyclictest21-21ksoftirqd/11
2145992310,4cyclictest21-21ksoftirqd/11
233042220,2sleep00-21swapper/00
2154992215,5cyclictest2566-21fw_packets3
2154992215,4cyclictest35-21ksoftirqd/33
2154992213,5cyclictest3564-21cron3
215099223,17cyclictest22150-21cat2
215099223,17cyclictest21641-21cat2
215099222,18cyclictest20166-40mandb2
2150992216,4cyclictest6531-21seq2
2150992216,4cyclictest28647-21tr2
2150992216,4cyclictest16967-21cpuspeed_turbos2
2150992216,4cyclictest16967-21cpuspeed_turbos2
2150992214,5cyclictest26009-21sed2
215099221,19cyclictest16512-21munin-run2
215099221,19cyclictest11767-21munin-run2
215099221,18cyclictest505-21dbus-daemon2
214599223,7cyclictest21-21ksoftirqd/11
214599223,6cyclictest21-21ksoftirqd/11
214599223,5cyclictest0-21swapper/11
214599223,5cyclictest0-21swapper/11
214599223,3cyclictest21-21ksoftirqd/11
2145992218,3cyclictest201rcuc/11
2145992215,4cyclictest8258-21cron1
2145992211,3cyclictest111rcu_preempt1
214599221,11cyclictest21-21ksoftirqd/11
214299221,5cyclictest0-21swapper/00
2154992115,4cyclictest6022-21sed3
2154992115,4cyclictest21264-21aten2_r9power_v3
2154992114,5cyclictest9455-21grep3
2154992114,4cyclictest1119-21ls3
2154992114,3cyclictest326-21idleruntime-cro3
2154992113,5cyclictest322-21systemd-journal3
215099212,17cyclictest26192-21cat2
2150992116,3cyclictest31672-21switchtime2
2150992116,3cyclictest29932-21ntp_offset2
2150992116,3cyclictest18933-21cpuspeed2
2150992115,4cyclictest3270-21cat2
2150992115,3cyclictest2945-21kernelversion2
2150992113,5cyclictest18196-21ls2
215099210,4cyclictest6302-21idleruntime-cro2
215099210,3cyclictest505-21dbus-daemon2
214599217,3cyclictest111rcu_preempt1
214599214,5cyclictest21-21ksoftirqd/11
214599212,7cyclictest21-21ksoftirqd/11
214599212,6cyclictest21-21ksoftirqd/11
214599212,6cyclictest21-21ksoftirqd/11
214599212,6cyclictest0-21swapper/11
214599212,3cyclictest21-21ksoftirqd/11
214599211,7cyclictest21-21ksoftirqd/11
214599211,7cyclictest21-21ksoftirqd/11
214599211,7cyclictest21-21ksoftirqd/11
214599211,6cyclictest0-21swapper/11
2145992116,3cyclictest26083-21seq1
2145992116,3cyclictest201rcuc/11
2145992111,3cyclictest111rcu_preempt1
2145992111,3cyclictest111rcu_preempt1
2145992111,2cyclictest111rcu_preempt1
2145992111,2cyclictest111rcu_preempt1
2145992111,2cyclictest111rcu_preempt1
214599210,8cyclictest21-21ksoftirqd/11
2142992116,3cyclictest7321-21/usr/sbin/munin0
2142992116,3cyclictest580-21acpi0
2142992116,3cyclictest16882-21grep0
214299210,11cyclictest30083-21grep0
225422200,1sleep30-21swapper/33
2154992015,3cyclictest6019-21sed3
2154992015,3cyclictest19933-21/usr/sbin/munin3
2154992015,3cyclictest19772-21cat3
2154992014,4cyclictest9783-21cron3
2154992014,4cyclictest29565-21cron3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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