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2022-01-23 - 20:18

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 50 highest latencies:
System rack9slot2 (updated Sun Jan 23, 2022 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249742305269,24sleep00-21swapper/00
250772286231,43sleep20-21swapper/22
242712279211,58sleep10-21swapper/11
250782262205,44sleep30-21swapper/33
723121610,2sleep32536199cyclictest3
2270021440,3sleep30-21swapper/33
69982380,1sleep20-21swapper/22
58432370,3sleep20-21swapper/22
25361993114,15cyclictest21394-21cat3
25361993114,15cyclictest1238-21sed3
25361993114,14cyclictest3339-21cat3
25361993114,14cyclictest14044-21grep3
2536199307,20cyclictest11186-21cat3
25361993014,13cyclictest2879-21missed_timers3
25361993013,14cyclictest30622-21if_enp3s03
2536199300,3cyclictest27857-21grep3
2536199298,19cyclictest17902-21sed3
2536199298,18cyclictest20516-21switchtime3
2536199298,18cyclictest15142-21expr3
2536199297,19cyclictest16054-21/usr/sbin/munin3
2536199296,20cyclictest32437-21grep3
25361992914,13cyclictest12992-21ps3
25361992914,12cyclictest27139-21grep3
25361992910,16cyclictest24142-21cat3
2536199290,4cyclictest10154-21aten2_r9power_v3
2536199289,16cyclictest9183-21expr3
2536199288,17cyclictest0-21swapper/33
2536199288,17cyclictest0-21swapper/33
2536199287,19cyclictest555-21processes3
25361992815,11cyclictest22676-21/usr/sbin/munin3
25361992811,14cyclictest19799-21interrupts3
2536199280,2cyclictest7678-21expr3
2536199280,2cyclictest1760-21taskset3
2536199278,16cyclictest14472-21gltestperf3
2536199276,18cyclictest6461-21ntp_kernel_err3
2536199276,18cyclictest4798-21unixbench_multi3
2536199271,23cyclictest25353-21grep3
2536199270,3cyclictest29812-21diskstats3
2536199270,3cyclictest28268-21taskset3
2536199270,3cyclictest1773-21ntp_states3
2536199270,3cyclictest16256-21/usr/sbin/munin3
2536199270,2cyclictest6948-21ntp_states3
2536199270,2cyclictest0-21swapper/33
2535299271,8cyclictest20897-21cat1
2536199269,14cyclictest301382chrt3
2536199268,15cyclictest4717-21if_err_enp3s03
2536199267,17cyclictest322-21systemd-journal3
2536199261,22cyclictest24128-21grep3
25361992611,13cyclictest8784-21load3
25361992610,13cyclictest6015-21timerandwakeup3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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